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In electrical engineering, the problem of converting an actual a.c. voltage into a desired reference a.c. voltage arises in many applications. Such applications may include, for example, power electronics, low-frequency electronics, communications electronics, etc.
The preferred field of application for such methods an... | {
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The present invention relates to a pneumatic tire suitable for rough terrain, more particularly to a block type tread pattern being capable of displaying good performance in a wide variety of conditions.
A motocross tire of a pneumatic tire designed for rough terrain is usually provided with a block type tread pattern.... | {
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Lifestyle in many parts of the world today is characterized by an enormous meal and “between-meal” intake of calories from solid food and snacks as well as drinkable calories. This lifestyle is often referred to as “western world lifestyle”, and it is generally regarded as unhealthy. Our food earlier consisted of an av... | {
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Field of the Invention
The present invention relates to an electromagnetic stirring method which provides a satisfactory solidified structure in continuous casting.
Besides Fe, molten steel contains various alloying elements and impurity elements, and the solidification of molten steel is sometimes attended by the rema... | {
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1. Field
The present application generally relates to the design of an etch process control system to measure a structure formed on a workpiece, and, more particularly, to a system of monitoring an etch process to meet two or more etch stage measurement objectives.
2. Related Art
During semiconductor processing, an etc... | {
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The invention relates to a blowing nozzle for transporting a flexible thread, comprising a supply channel for the thread to be transported, the exit end of the channel being surrounded by an annular gap which upstream communicates with means for supplying a flowing pressurized fluid, and in the downstream direction mer... | {
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As computer systems have advanced, graphics processing units (GPUs) have become increasingly advanced both in complexity and computing power. As a result of this increase in processing power, GPUs are now capable of executing both graphics processing and more general computing tasks.
The ability to execute general comp... | {
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1. Field of the Invention
The present invention relates to a radiation-proof sheath material and a radiation-proof cable. In particular, it relates to a radiation-proof sheath material and a radiation-proof cable, which are excellent in flame retardancy and radiation resistance and which are used in nuclear power stati... | {
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1. Field of the Invention
This invention pertains to recreational face masks designed to protect the face and nose from sunburn and frostbite.
2. Background Information
Today's society is increasingly involved in outdoor sports and recreational activities yet concerns about avoiding skin cancer and other harmful effect... | {
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This invention relates to a cover which serves as weather protection for the window of a vehicle such as the windshield of an automobile, truck, boat, or airplane.
When automobiles and other vehicles are stored outside, the windshields and other windows of the vehicle are exposed and can be subjected to damage and othe... | {
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In the case where transferring video data for broadcast in a broadcasting station or the like by using a best-effort-type communication network, a loss of data or a change of image quality will not be permitted, and so a method will not able to be adopted which dynamically changes an encoding rate of the video data, in... | {
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In computer data storage and retrieval systems, magneto-resistive heads, otherwise known as MR heads, are employed for reading data from a storage disk. The magnetically stored data is read by means of the change in resistance of the MR head as it passes through the magnetic field representing the data. For monitoring ... | {
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In recent years, in order to conduct an inter-vehicular distance maintenance control and the like, a device that estimates a radius of curvature of a travel route of one's own vehicle is mounted on a vehicle. As methods for estimating the radius of curvature of the travel route of the own-vehicle, there are two methods... | {
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Various types of hook setting devices are known. For example, U.S. Pat. Nos. 3,571,963; 4,212,125 and 4,627,186 disclose a hook setting fishing rod attachment which causes the fishing rod to tip upwardly in order to pull the fishing line thereby hooking the biting fish. U.S. Pat. No. 4,651,459 discloses an automatic fi... | {
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The invention relates to a light guiding device for an illumination device, such as a backlight or interior or exterior lighting, wherein incident light is deflected by reflection. The light guiding device can particularly be used in an indicator of a motor vehicle, in connection with a blind spot monitor in an outside... | {
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Particle separation and classification are well explored needs of the chemical, pharmaceutical, mineral and food industries. While particle classification in industrial processes may be required to improve the quality of a certain product, particle separation may be necessary to purify a fluid stream or to avoid proble... | {
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1. Technical Field
The present invention is directed to optical information readers and particularly to readers adapted to selectively decode two-dimensional optical information sets.
2. Description of the Prior Art
Conventional bar code symbols have small data storage capabilities. This reduces the utility of conventi... | {
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1. Technical Field
The present invention generally relates to an apparatus, system, and method of managing data transmission, each of which is capable of generating reservation information in response to a request for starting communication between or among a plurality of transmission terminals, a non-transitory record... | {
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JP2000-346169A discloses a control device of continuously variable transmission for vehicle including a sub-transmission mechanism which is switched to a plurality of gear positions in addition to a continuously variable transmission mechanism and configured to change the gear position of the sub-transmission mechanism... | {
"pile_set_name": "USPTO Backgrounds"
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1. Field of the Invention
Embodiments of the invention relate to an image forming apparatus connected to a power monitoring apparatus via a network.
2. Description of the Related Art
In recent years, there has been concern about global warming caused by an increase in greenhouse effect gases, such as carbon dioxide (CO... | {
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This application relates to efficient allocations of transport streams to support simultaneous delivery of media assets. Moreover, the application relates to initializing allocations of transport streams based on historical data associated with user requests for simultaneous delivery of media assets.
With Internet medi... | {
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Early detection of prostate cancer (PC) using prostate-specific antigen (PSA) in blood reduces PC-death among unscreened men. However, due to modest specificity of PSA at commonly used cut-offs, there are urgent needs for additional biomarkers contributing enhanced risk classification among men with modestly elevated P... | {
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The present invention relates generally to an eyepiece optical system adapted to enlarge an object to view it with the naked eye. More specifically, the invention relates to an electronic view finder adapted to enlarge an image shown on a display plane of an image display apparatus to view it with the naked eye.
Among ... | {
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A display device including a buffer member has been provided. | {
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The invention relates to a piezoelectric actuator device with at least one piezoelectric transducer which has at least one piezoelectric body and an electrode unit assigned to this piezoelectric body with overall capacitance and comprised of two electrodes mounted on opposite sides of the piezoelectric body.
The invent... | {
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1. Field of the Invention
The present invention relates to a torque applicator comprising a housing in which is disposed a rotatable torque applicator stem actuated by a hydraulic or pneumatic double-acting piston to apply an intermittent torque on bolts, nuts etc. A torque applicator of this kind is known from Norwegi... | {
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1. Field of the Invention
The present invention relates to a photosensitive drum, a process cartridge, an image forming apparatus and an image forming system. The image forming apparatus may be embodied, for example, as an electrophotographic copying machine, a laser beam printer, an LED printer, a facsimile apparatus ... | {
"pile_set_name": "USPTO Backgrounds"
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1. Field of the Invention
This invention relates generally to electrical current control circuitry and, more particularly, to a MOS integrated circuit (IC) current mirror correction device that permits a current mirror to be operated at high current levels and rapid switching speeds.
2. Description of the Related Art
A... | {
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The present invention relates in general to secure data transmission and more specifically to secure data transmission in end-to-end communication systems that use call signaling to exchange keys using intermediary transfers.
Secure communication of digital information is very important in many of today""s systems. For... | {
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The present invention relates generally to ground support power for aircraft and more particularly to a connector for use between ground power carts and aircraft power supply systems.
When a commercial airliner is on the ground at a terminal between flights, a ground power cart is wheeled out to the aircraft and used t... | {
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Graphical User Interfaces (GUI)s are a common manner of exchanging information between a user and a computer in a modern information processing environment. The graphical user interfaces typically follow a well known window-based structure. The window-based structure allows a screen display to present one or more recta... | {
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1. Field of the Invention
The present invention relates to an image display method and device for a plasma display panel (PDP). More specifically, the present invention relates to a PDP image display method and device for reducing flicker and dynamic false contour (DFC) generated when inputting 50 Hz PAL (phase alterna... | {
"pile_set_name": "USPTO Backgrounds"
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Syringes are known in the medical art for dispensing measured volumes of fluids, i.e., liquids or gases, to a given site. The typical syringe comprises a piston or plunger enveloped in a chamber, usually a cylindrical chamber, where it forms a fluid-tight seal with the wall of the chamber so that slidable movement of t... | {
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1. Technical Field
The present invention relates to a lubricant composition for chains and to a chain having the lubricant composition for chains adhered to its surface.
2. Description of Related Art
As a power transmission mechanism and a conveyer mechanism, chains such as bushing chains and roller chains are conventi... | {
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The approaches described in this section are approaches that could be pursued, but not necessarily approaches that have been previously conceived or pursued. Therefore, unless otherwise indicated, it should not be assumed that any of the approaches described in this section qualify as prior art merely by virtue of thei... | {
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1. Field of the Invention
This invention relates to a method of producing H-beams by universal mills. More particularly this invention relates to a method of producing H-beams which have excellent strength and toughness in the joints between the web and flanges, referred to hereinbelow as the "fillets."
2. Prior Art
Th... | {
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The present invention relates to a process for preparing novel polyolefins. More particularly, the present invention is concerned with a process for preparing polyolefins exhibiting better particle properties with increase of average particle diameter, which process is capable of greatly increasing the polymer yield pe... | {
"pile_set_name": "USPTO Backgrounds"
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The present invention relates to a novel pinned module and a method for making the same.
In the manufacture of printed circuit boards and similar electrical devices, it is desirable to make connections to the device as quickly and easily as possible. One technique for making this connection is to employ pins which are ... | {
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The present invention generally relates to novel surfactant compositions, their preparation and to compositions containing these novel surfactant compositions, together with a pesticide, particularly a herbicide. More particularly, an important aspect of this invention is directed to surfactant compositions having redu... | {
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Such multi chamber ampoules are previously used for storing one or more sensitive medical components, which are to be dissolved in a liquid to form an injectable solution. The solution can not be stored for a longer period of time without becoming deteriorated. However, sensitive medical components of this kind can in ... | {
"pile_set_name": "USPTO Backgrounds"
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Patent literature 1 describes a particle dispersion liquid supply device directed at controlling the occurrence of stacker blocking, wherein particles are adhered to an image-formed surface of a recording medium to prevent fly-off of the particles.
Patent literature 2 describes an inkjet recording device including a pr... | {
"pile_set_name": "USPTO Backgrounds"
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1. Field of the Invention
The present invention relates to a technology for supporting verification of a large-scale integration (LSI).
2. Description of the Related Art
In LSI design, a verification work of verifying whether an LSI works normally is essential. While the verification work is important to maintain high ... | {
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The present invention relates to a device for the measurement of the level of a chemical in a body fluid of a subject, and particularly relates to such a chemical level measurement device which is suitable for easily and conveniently measuring the level of blood sugar or urine sugar or the like.
A per se conventional s... | {
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Radiofrequency (RF) devices are used to non-specifically and non-selectively ablate or heat different types of tissue. For example, in the field of dermatology RF devices are used to treat aging skin. Skin aging is associated with changes in the upper levels of the skin such as roughness of the skin due to changes in t... | {
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The present invention relates in general to materials handling vehicles, and more particularly, to object tracking and steer correction schemes for materials handling vehicles, such as remotely operated low level order picking truck.
Low level order picking trucks are commonly used for picking stock in warehouses and d... | {
"pile_set_name": "USPTO Backgrounds"
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For the purpose of effective use of resources and conservation of the global environments, various electronic appliances such as television receivers and personal computer display devices are disassembled, classified by the variety of materials, and regenerated.
As a regeneration processing method, a disassembling meth... | {
"pile_set_name": "USPTO Backgrounds"
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1. Field of the Invention
The present invention generally relates to tracked snow vehicles, and more particularly to two-wheeled tracked snow vehicles and conversion kits for creating them.
2. Background Information
The presence of snow in the wintertime severely restricts operators of two-wheeled vehicles from using t... | {
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The present invention involves novel compositions of matter. More particularly, the present invention involves novel N-substituted derivatives of 2-(pyridylalkylenesulfinyl)benzimidazoles which are useful as gastric antisecretory and cytoprotective agents.
Gastrointestinal inflammatory diseases are characterized by inf... | {
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Lighting modules usually include a printed circuit board with one or more light sources arranged on the upper side thereof, and a covering element, which at least partially covers the printed circuit board. In addition, provision is generally made for the lighting modules to have an external driver or control gear, in ... | {
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Power converters are used to transfer power from a source to a load using a different type or level of electrical power.
These power converters e.g. inverters, active rectifiers, DC-DC converters etc. include high power semiconductor switching devices such as FETs, MOSFETs, IGBTs, etc. A power semiconductor switching d... | {
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Approximately 80% of all food products are sensitive towards loss or uptake of water vapour, flavours, and odours. These food products must therefore be stored in a protected environment from one or more of these gases. Especially oxygen can pose a serious problem since oxygen penetration into food packages are known t... | {
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Electroluminescence (EL) describes the direct conversion of electricity to light. It is the result of radiative recombination of electrons and holes in a material (usually a semiconductor), whereby excited electrons release their energy as photons (i.e., light). Prior to recombination, electrons and holes are separated... | {
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In product development cycles, one or more common parts are often incorporated into both a product currently in production and a similar product currently in the design phase. It is desirable to have feedback from the manufacturing process of the product in production so that the product in the design phase can be impr... | {
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1. Field of the Invention
This invention relates to word processors and more particularly to a word processor having a function of creating documents including a character-symbol train having a special position and size such as a formula.
2. Related Background Art
Conventionally, to create a document including a formul... | {
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Certain types of electronic components have two axial leads extending from opposite sides of the components as, for example, with resistors and diodes. To efficiently manufacture, package, and use these components, handling systems are required. The handling systems must orient the components with parallel leads and ma... | {
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The present invention relates to devices for dispensing toilet bowl treating chemicals (e.g. soaps, disinfectants, sanitizers deodorizers, fragrances, colorants, etc.). More specifically it relates to such devices that allow a consumer to direct when the chemicals will be dispensed into the toilet bowl water, while min... | {
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An ATM is an electronic device that allows banking customers to carry out financial transactions without the need for a human teller. For example, customers may use an ATM to access their bank accounts, deposit, withdraw, or transfer funds, check account balances, or dispense items of value. Generally, to use an ATM, t... | {
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Technical Field
The present invention relates to a stator, a brushless motor, and a stator manufacturing method.
Related Art
Known stators employed in a brushless motor are for example disclosed in Japanese Patent Application Laid-Open (JP-A) No. 9-322441. JP-A No. 9-322441 discloses an armature with a yoke configured ... | {
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1. Field of the Invention
This invention relates to a rollformed sheet metal structural shape fabricated from a single sheet of metal for use in building construction. The structural shape is particularly useful as a stud or mullion in wall construction or as a purlin or sub-purlin in deck construction. This invention ... | {
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Interior spring mattresses consist of a multitude of steel springs joined together in a regular grid. Typically, the end rings of the neighboring steel springs are directly connected to one another by way of wire spirals. Alternatively, barrel shaped springs are often sewn or welded into pockets in rows and in turn the... | {
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Hitherto, it is believed that hydrocarbon allyl compounds are hardly radically homopolymerized, and no homopolymer thereof having a high molecular weight can be obtained, and the reported molecular weight of the homopolymer is from about 300 to about 3,000 (see R. L. Shriner, L. Kelley ed. “Chemical Reviews” (USA), pag... | {
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This invention relates to a developing apparatus used in an electrophotographic apparatus and, more particularly, to a developing apparatus in which an electrostatic latent image formed on an image carrier is developed and visualized by a non-magnetic single-component developer.
Generally, in an electrophotographic app... | {
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A binary or phase shift photomask may include glass and chrome features which form a pattern. Light may pass through the clear glass areas and be blocked by the opaque chrome areas. Light that passes through the mask may continue into an imaging system that projects an image of the mask pattern onto a wafer. The wafer ... | {
"pile_set_name": "USPTO Backgrounds"
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1. Field of the Invention
The present invention relates to an optical device wafer processing method and a laser processing apparatus for dividing an optical device wafer into individual optical devices along a plurality of crossing streets formed on the front side of the optical device wafer, the optical device wafer ... | {
"pile_set_name": "USPTO Backgrounds"
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1. Field of the Invention
The present invention relates to an image processing method and apparatus for synthesizing a plurality of different images.
2. Related Background Art
Hitherto, as a synthesis of digital images, for example, in a synthesis of a first image of plural colors and a second image of plural colors, n... | {
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The invention relates to the silane-grafting of polyolefin materials to enhance the properties of the materials.
Current art for the production of cross-linked polyolefin foam structures involves the use of conventional high-pressure reactor-produced, low density polyethylene (LDPE). LDPE is comprised of a wide-ranging... | {
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Today, software application development is a combination of software development and artwork development. When creating applications that represent virtual environments, it is common for the artwork to be created using a 3D drawing tool, and then saved as a rasterized flat file, which is used as the background image of... | {
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The invention relates to the integration of a unit in an apparatus, for example, for configuring a field replaceable unit (FRU) into apparatus such as a computer system.
FRUs can be used in many different systems. They find particular but not exclusive application to computer systems, for example to fault tolerant comp... | {
"pile_set_name": "USPTO Backgrounds"
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1. Field of the Invention
This invention relates to a tape cassette comprised of a tape-shaped recording medium housed in a cassette, and to a recording and/or reproducing apparatus for recording and/or reproducing data for the tape-shaped recording medium.
2. Description of the Related Art
As a tape recording and/or r... | {
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1. Field of the Invention
The present invention relates to the field of automatic valves and valve controllers.
2. Prior Art
In certain situations, it is desired to provide a control valve of some form and to provide a controller therefor which may be programmed to automatically control the valve as desired, frequently... | {
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Embodiments of the invention relate generally to matching different user representations of a person, and, specifically, to matching different user representations of a person in a plurality of computer systems.
Typically, legal custodians are represented in computer systems using system account Identifiers (IDs) and o... | {
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1. Technical Field
The invention is in the field of electro-optic modulators of light wave intensity. More particularly, the invention relates to using thin film ferroelectric materials in a Fabry-Perot etalon to provide polarization-insensitive modulation of reflected and transmitted light at high modulation frequenci... | {
"pile_set_name": "USPTO Backgrounds"
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1. Field of the Invention
The present invention relates in general to a method of forming a fluid tight pipe joint and the gasket for forming the joint. Specifically, the invention relates to a method of forming a pipe joint, and a gasket used to form the pipe joint between a metal spigot pipe and a metal belled pipe, ... | {
"pile_set_name": "USPTO Backgrounds"
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FIG. 10 illustrates a prior art wiring harness retainer clip (Japanese Utility Model Preliminary Publication No. Hei-1 96723) with a living hinge 104. Living hinge 104 interconnects two semi-cylindrical clip pieces 100 and 102 and bends when the clip is opened and closed. After repeated openings and closings, living hi... | {
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1. Field of Invention
The present invention relates to a speaker driver circuit driven by positive and negative voltages.
2. Description of Related Art
FIG. 1 shows a typical structure of a conventional two-channel speaker driver circuit. In order to obtain a maximum dynamic range, the output of such conventional speak... | {
"pile_set_name": "USPTO Backgrounds"
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Conventionally, mechanical devices such as, a micro-switch or a limit-switch, have been used to detect the presence of a detecting object or changes of the situation thereof through contact with the object. However, the improvement in the energy-saving views has required devices capable of performing functions not only... | {
"pile_set_name": "USPTO Backgrounds"
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1. Field of the Invention
The present invention relates to a solid-state image sensing apparatus having two-dimensionally arrayed pixels and, more particularly, to a solid-state image sensing apparatus having a plurality of output channels and a reading method thereof.
2. Description of the Related Art
Conventionally, ... | {
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The use of a dental apparatus for the illumination of an oral procedure site is well known. Typically, such illumination is often utilized as a source of activation energy for restorative compositions which are designed to set or cure upon the receipt of light of a certain bandwidth. Such compositions are used in a var... | {
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It is difficult to debug problems with speech quality, one way voice, or lost calls on the Internet and in enterprises spread over different locations. One reason for the difficulty is the large number of paths that a packet can take through the network. In the case of voice, the path a packet takes can determine if th... | {
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Digital video capabilities can be incorporated into a wide range of devices, including digital televisions, digital direct broadcast systems, wireless broadcast systems, personal digital assistants (PDAs), laptop or desktop computers, tablet computers, e-book readers, digital cameras, digital recording devices, digital... | {
"pile_set_name": "USPTO Backgrounds"
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The present invention relates to a protein hydrolysate derived from animal tissue having an endothelial or mucosal component (hereafter "mucosa"), a process for its preparation, and the use of such a protein hydrolysate.
Protein hydrolysate by definition consists of a mixture of amino acids and short chain peptides obt... | {
"pile_set_name": "USPTO Backgrounds"
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1. Field of the Invention
The invention generally relates to electronic communications systems. In particular, the invention relates to Viterbi decoding.
2. Description of the Related Art
Forward error correction (FEC) techniques are often used in communication systems in order to enhance the reliability of the transmi... | {
"pile_set_name": "USPTO Backgrounds"
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The novel 1,4-benzodiazepine-4-oxide aldehyde adducts of the invention are aldehyde adducts of benzodiazepines unsaturated at the 1 position, referred to as 3H-1,4-benzodiazepines. 3H-1,4-benzodiazepines are known, and are useful as sedatives and tranquillizers in the field of human therapy. The azeto-[1,4]-benzodiazep... | {
"pile_set_name": "USPTO Backgrounds"
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(a) Field of the Invention
The present invention relates to amplifiers, and more specifically amplifiers with substantially no distortion wherein distortion generated in the amplifier is detected and added to an input signal to be amplified, for cancellation of distortion in such amplifier.
(b) Description of the Prior... | {
"pile_set_name": "USPTO Backgrounds"
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The invention relates to a damper for controlling the displacement of a movable member, and more specifically the invention relates to a surface effect damper that produces surface effect damping forces as the damper rod and damping elements are displaced through the damper housing.
Frequently it is desirable to accura... | {
"pile_set_name": "USPTO Backgrounds"
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The present invention relates to the potentiation of glutamate receptor function using certain sulfonamide derivatives. It also relates to novel sulfonamide derivatives, to processes for their preparation and to pharmaceutical compositions containing them.
In the mammalian central nervous system (CNS), the transmission... | {
"pile_set_name": "USPTO Backgrounds"
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Aerial vehicles such as unmanned aerial vehicles (UAVs) can be used for performing surveillance, reconnaissance, and exploration tasks for military and civilian applications. Such aerial vehicles may carry a payload configured to perform a specific function, such as capturing images of surrounding environment.
In some ... | {
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This invention relates to oil seals, particularly shaft seals wherein the primary sealing lip element is an annular wafer shaped article which completely surrounds the shaft to be sealed and is in light engagement therewith at its inner annulus, or seal lip as it is commonly referred to.
Typically the aforesaid primary... | {
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Rebeccamycin (FIG. 1, A) is a natural product of Saccharothrix aerocolonigenes ATCC39243, a Gram-positive bacterium of the actinomycetes group (Bush et al. J. Antibiot. 40: 668-678, 1987). Actinomycetes are natural soil inhabitants with great industrial and biotechnological interest, especially the Streptomyces genus, ... | {
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This invention relates to a light-sensitive silver halide color photographic material containing a novel cyan coupler.
By carrying out color developing processing of a light-sensitive silver halide color photographic material after giving exposure thereto, an aromatic primary amine developing agent reacts with a dye fo... | {
"pile_set_name": "USPTO Backgrounds"
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Data storage systems are used to store information provided by one or more host computer systems to a storage server. Such storage servers receive requests to write information to one or more data storage devices, and requests to retrieve information from those one or more data storage devices.
Applications resident on... | {
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Plants must adapt themselves to various stresses, for example, drought, salt in the soil, and low temperature because they can not move freely. Among these stresses, drought is thought to effect plant growth the most severely. In order to survive in drought condition, some plants have acquired a physiologically and/or ... | {
"pile_set_name": "USPTO Backgrounds"
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In my U.S. Pat. No. 4,479,056 issued Oct. 23, 1984 and based upon a German patent document - open application DE-OS No. 31 19 720, I have described a motion detector for space surveillance which comprises a concave mirror forming an optical system for focusing infrared radiation collected from the viewing fields of hor... | {
"pile_set_name": "USPTO Backgrounds"
} |
In the process of video scan conversion, data sampling rate (Nyquist) problems are presented in many different ways. One of the most visually objectionable problems presented by the sampling rate is that of field flicker. Field flicker occurs, for example, when a progressively scanned image is converted into an interla... | {
"pile_set_name": "USPTO Backgrounds"
} |
Obtaining a correct bra size is often difficult for a majority of women whose breasts are asymmetrical to some degree. Generally, it is recommended that women should wear a bra fitted to the larger breast and use padding for the smaller or shorten breast to avoid gapping. This method can be useful to overcome slight di... | {
"pile_set_name": "USPTO Backgrounds"
} |
Within government, industry, and the like, cross domain collaboration has always been difficult to manage and implement due to varying security clearances, desire to limit insider knowledge on a need to know basis, and the like. As such, a set of rules and procedures have been developed implementing such collaboration ... | {
"pile_set_name": "USPTO Backgrounds"
} |
1. Field of the Invention
This invention relates to methods and compositions for treating subterranean formations. More particularly it relates to methods and compositions for treating a subterranean formation penetrated by a wellbore utilizing a crosslinked gel and thereafter reducing the viscosity of the crosslinked ... | {
"pile_set_name": "USPTO Backgrounds"
} |
Carbon dioxide, hydrogen sulfide, and various hydrocarbons, such as methane, ethane, propane, normal butane and isobutane, are present in natural gas and other petroleum fluids. However, water is typically found mixed in varying amounts with such petroleum fluid constituents. Under conditions of elevated pressure and r... | {
"pile_set_name": "USPTO Backgrounds"
} |
A widely used acoustic muffler design for motor vehicle exhaust gas systems has a retroverted gas flow path in which gas flows to the downstream end of the muffler, reverses itself to flow to the upsteam end of the muffler, and reverses itself again to flow back to the downstream end and out of the muffler. In some of ... | {
"pile_set_name": "USPTO Backgrounds"
} |
1. Field of the Invention
A vacuum powered automatic swimming pool sweep for cleaning the bottom of a swimming pool.
2. Description of the Prior Art
Typically swimming pool cleaning has been done manually. This has been accomplished by manipulating a vacuum head supported on a pole extended down into the swimming pool.... | {
"pile_set_name": "USPTO Backgrounds"
} |
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