Shared Electrode Patents (Class 361/330)
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Patent number: 5117206Abstract: A variable capacitance circuit comprising a capacitor array, associated switching elements and transient impedance varying circuits. The capacitor array comprises a plurality of capacitor elements connected to a common node coupled to a crystal oscillator in a crystal oscillator portion and each capacitor element includes a connected switching element that controls activation of selected capacitor elements that are selectively placed in operation as load capacitance with the crystal oscillator to change and adjust its frequency. Further, circuits are provided in a temperature compensation portion to selectively control the activation of the switching elements based upon decoded compensating values provided in memory, such as based upon sensed oscillator temperature conditions.Type: GrantFiled: December 4, 1990Date of Patent: May 26, 1992Assignee: Seiko Epson CorporationInventor: Yoichi Imamura
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Patent number: 5113309Abstract: A high-voltage through-type ceramic capacitor which is capable of exhibiting satisfactory heat resistance sufficient to ensure good operability of the capacitor even under severe conditions and being positively small-sized while ensuring its satisfactory operation. In the capacitor, at least one of an insulation case and an insulation cover is made of a material selected from the group consisting of polyethylene terephthalate and nylon 66. The capacitor further includes a pair of central conductors each including a fastening tab arranged in the insulation case, and the insulation case is formed at an upper portion thereof surrounding the fastening tabs into an upper enlarged section.Type: GrantFiled: June 27, 1991Date of Patent: May 12, 1992Assignee: TDK CorporationInventors: Setsuo Sasaki, Teruo Taguchi, Isao Fujiwara
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Patent number: 5088003Abstract: A laminated silicon oxide film capacitor including a conductive or semiconductive silicon substrate and, formed on the substrate surface, at least one laminated film comprising a silicon oxide layer and an electrode layer laminated one on the other, and electrodes.Type: GrantFiled: August 17, 1990Date of Patent: February 11, 1992Assignee: Tosoh CorporationInventors: Naomichi Sakai, Masanaga Kikusawa, Yoshitaka Kubota, Hiroshi Yamamura, Hiroya Nagata
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Patent number: 5041942Abstract: This extended-foil capacitor comprises a plurality of flattened foil rolls stacked side-by-side. Each foil roll comprises two sheets of foil rolled up in nesting, face-to-face relationship and dielectric film positioned between said foil sheets and electrically insulating the foil sheets from each other. At one end of each foil roll, one of the foil sheets entends beyond both the dielectric film and the other foil sheet in the roll to provide first foil extensions at said one end of the roll. Adjacent foil rolls in the stack have their first foil extensions positioned adjacent each other at one end of the adjacent rolls. At said one end of the adjacent rolls, there is a joint formed by ultrasonic welding and joining together the first foil extensions. This joint includes within it dozens of superposed foil extensions arranged in a substack and joined together by solid-state metallurgical bonds between juxtaposed foil extensions.Type: GrantFiled: August 16, 1990Date of Patent: August 20, 1991Assignee: General Electric CompanyInventor: Philip H. Carrico
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Patent number: 5040094Abstract: A 3-terminal capacitor includes a wound unit which includes first and second longitudinal insulation sheets having substantially the same length which are laminated. First and second conductors are respectively formed on corresponding main surfaces of the first and second insulation sheets, so that one of the insulation sheets is sandwiched between the two conductors. The first conductor is longitudinally formed with substantially the same length as the first insulation sheet, and the second conductor is formed to be sufficiently shorter than the second insulation sheet. When the first and second insulation sheets are wound together with the first and second conductors to form the wound unit, two first terminals fixed on the first conductor at a predetermined interval and a second terminal fixed on the second conductor are exposed outside the wound unit.Type: GrantFiled: December 22, 1989Date of Patent: August 13, 1991Assignee: Murata Manufacturing Co., Ltd.Inventor: Mitsunao Okumura
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Patent number: 5032949Abstract: A high-voltage through-type ceramic capacitor which is capable of exhibiting satisfactory heat resistance sufficient to ensure good operability of the capacitor even under severe conditions and being positively small-sized while ensuring its satisfactory operation. In the capacitor, at least one of an insulation case and an insulation cover is made of a material selected from the group consisting of polyethylene terephthalate and nylon 66. The capacitor further includes a pair of central conductors each including a fastening tab arranged in the insulation case, and the insulation case is formed at an upper portion thereof surrounding the fastening tabs into an upper enlarged section.Type: GrantFiled: June 2, 1989Date of Patent: July 16, 1991Assignee: TDK CorporationInventors: Setsuo Sasaki, Teruo Taguchi, Isao Fujiwara
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Patent number: 5023578Abstract: A filter array includes a dielectric unit with a plurality of individual electrodes formed on one main surface and a common electrode on the other main surface. The individual electrodes are formed at predetermined intervals so as to extend across the dielectric unit in a direction of a width of the dielectric unit. Since each of the individual electrodes and the common electrode face each other, they form with the dielectric unit, a plurality of capacitance elements. To both ends of each of the individual electrodes, input and output terminals are respectively connected. The input and output terminals project outward from the dielectric unit. A conductive plate is joined to the common electrode, and common terminals are integrally formed on the conductive plate so as to extend outward in a direction of the width of the dielectric unit. Each of the pairs of input and output terminals are inserted and connected to respective signal lines and the common terminals are connected to ground.Type: GrantFiled: February 14, 1990Date of Patent: June 11, 1991Assignee: Murata Manufacturing Co., Ltd.Inventors: Toshimi Kaneko, Hidetoshi Yamamoto, Takayuki Hirotsuji
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Patent number: 5018047Abstract: A multilayer capacitor has a dielectric block with a marked position where the adjustable capacitance is to be placed. The capacitor has two end walls on which are first and second terminal electrodes. The electrodes have first and second narrow bands extending over marginal end portions of first and second side walls of the block. Two narrow spaced conductive stripes on the first side wall extend from the first band along lateral edges of the first side wall and terminate short of the second band to define a first rectangular U-shaped extension of the first terminal electrode on the first side wall. In the block are embedded spaced electrodes to determined the capacitance of the capacitor. A first stripe of conductive ink of any desired width can be applied to an uncovered area of the first wall to contact the U-shaped extension of the first terminal electrode to adjust capacitance of the capacitor.Type: GrantFiled: July 20, 1990Date of Patent: May 21, 1991Assignee: American Technical Ceramics CorporationInventors: Victor Insetta, Richard V. Monsorno, Donald J. Davis, Jr., Stephen Beyel
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Patent number: 5006726Abstract: A pulse generator which employs a coaxial type capacitor, including at least one capacitor from which an accumulated charge is discharged when a pulse is generated, and another capacitor for adjusting the waveform of the pulse to be outputted. The coaxial type capacitor in this pulse generator includes at least first, second and third capacitors which are arranged coaxially and adjacent to each other. The first and third capacitors are connected in parallel to form the discharging capacitor of the pulse generator, while the second capacitor is arranged between the first and third capacitors and is used as the waveform adjusting capacitor of the pulse generator. A current in the second capacitor flows in a direction opposite to the direction of currents in the first and third capacitors when a pulse is generated.Type: GrantFiled: May 8, 1989Date of Patent: April 9, 1991Assignee: Murata Manufacturing Co., Ltd.Inventor: Mitsunao Okumura
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Patent number: 4985926Abstract: An improved bimorph piezoelectric transducer provides higher input impedance and allows operation at higher operating voltages. First and second piezoelectric elements have opposing electrode patterns which define a plurality of capacitors connected in series. This allows such transducers to be directly connected to high voltage audio distribution systems without the need for an impedance matching circuit.Type: GrantFiled: February 29, 1988Date of Patent: January 15, 1991Assignee: Motorola, Inc.Inventor: Richard G. Foster
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Patent number: 4947286Abstract: Disclosed is a multilayer capacitor using a sintered body obtained by alternately laminating a plurality of ceramic green sheets each having first inner electrodes formed on its one major surface and a plurality of ceramic green sheets each having second inner electrodes extending in such a direction as to intersect the first inner electrodes formed on its one major surface and cofiring the same. The first inner electrodes are spaced apart from each other through a space region having a predetermined width in the same plane, and led out to first and second side surfaces of the sintered body. In addition, each of the second inner electrodes is let out to third and fourth side surfaces of the sintered body, and has a plurality of electrode portions for taking up capacitance overlapped with the first inner electrodes through a ceramic layer.Type: GrantFiled: August 3, 1989Date of Patent: August 7, 1990Assignee: Murata Manufacturing Co., Ltd.Inventors: Toshimi Kaneko, Hidetoshi Yamamoto, Hiromichi Sakai
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Patent number: 4856102Abstract: This capacitor has a monolithic dielectric block in which are laterally spaced electrode plates electrically connected to respective external terminal layers. On one or both sides of the block are conductive stripes of the same or different sizes which may be connected by jumper elements to the terminal layers. Electrodes in the block are closely spaced by thin dielectric spacers from the conductive stripes. Selective ones of the stripes may be connected to the terminal layers for adjusting the capacitance of the capacitor to different predetermined magnitudes.Type: GrantFiled: December 19, 1988Date of Patent: August 8, 1989Assignee: American Technical Ceramics CorporationInventors: Victor Insetta, Donald J. Davis, Jr.
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Patent number: 4853827Abstract: A multilayer capacitor is presented which provides high capacitance and low inductance. The capacitor comprises a plurality of conductive layers, each separated from the other and sandwiching therebetween a high capacitance flexible dielectric sheet material. The dielectric sheet material is comprised of a monolayer of multilayer or single layer high dielectric (e.g. ceramic) chips or pellets of relatively small area and thickness which are arranged in a planar array. These high dielectric constant chips are spaced apart by a small distance. The spaces between the chips are then filled with a flexible polymer/adhesive to define a cohesive sheet with the polymer binding the array of high dielectric (e.g. ceramic) chips together. Next, the opposite planar surfaces of the array (including the polymer) are electroless plated or electroded by vacuum metal deposition, or sputtering, to define opposed metallized surfaces.Type: GrantFiled: December 29, 1988Date of Patent: August 1, 1989Assignee: Rogers CorporationInventor: Jorge M. Hernandez
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Patent number: 4843518Abstract: A coaxial type capacitor for a pulse generator including at least a capacitor for discharging charge accumulated therein upon generating a pulse and a capacitor for adjusting a waveform of a pulse to be outputted.The coaxial type capacitor includes at least first, second and third capacitors which are arranged coaxially and adjacently with each other. The first and third capacitors between which the second capacitor is arranged are connected in parallel so as to form the discharging capacitor of the pulse generator while the second capacitor is used as the waveform adjusting capacitor of the pulse generator.Type: GrantFiled: March 22, 1988Date of Patent: June 27, 1989Assignee: Murata Manufacturing Co., Ltd.Inventor: Mitsunao Okumura
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Patent number: 4831494Abstract: Disclosed is a multilayer capacitor consisting of a plurality of laminae with each of the laminae including a conductive plate portion and a non-conductive sheet portion. The conductive plate portion has at least one tab projecting to at least one edge of the conductive plate portion with the maximum number of tabs per conductive plate portion being limited to avoid excessive lateral congestion. The laminae are divided into different groups with the laminae from each group having the same number and location of tabs and with the laminae from different groups differing by at least the location of the tabs.Type: GrantFiled: June 27, 1988Date of Patent: May 16, 1989Assignee: International Business Machines CorporationInventors: Allen J. Arnold, Michael E. Bariether, Shin-Wu Chiang, Hormazdyar M. Dalal, Robert A. Miller, Frank A. Montegari, James M. Oberschmidt, David T. Shen
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Patent number: 4814940Abstract: A capacitor with a low parasitic inductance, which is particularly suited for use as a decoupling capacitor, that has a prismatic or polyhedral shape and includes a plurality of internal capacitor plates positioned and separated by dielectric material. The improvement is that each plate is provided with a tab that projects diagonally to a corner of the body with the edge of the tab exposed. A metal layer on the outside of the body electrically connects the plates in the desired sequence.Type: GrantFiled: May 28, 1987Date of Patent: March 21, 1989Assignee: International Business Machines CorporationInventors: Richard E. Horstmann, James M. Oberschmidt
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Patent number: 4814938Abstract: A high voltage capacitor used for a low-pass filter circuit or the like in a magnetron oscillator circuit of an electronic cooking range includes in combination, a capacitor unit, a ground terminal into which the unit is inserted, two perforating conductors inserted through two through-bores extending in the capacitor unit, insulating casings encircling the capacitor unit on both sides of the ground terminal, insulating resin disposed in both of the insulating casings and surrounding the capacitor unit, an electrode at the outer periphery of the capacitor unit, and electrodes at the inner periphery of each through-bore which surround and are conductively coupled to each perforating conductor. When compared to a conventional high voltage capacitor, the present invention has a reduced number of components, is simple in construction, and is not subject to a lowering of the breakdown voltage durability caused by a heat cycle or the like.Type: GrantFiled: August 13, 1987Date of Patent: March 21, 1989Assignee: Murata Manufacturing Co., Ltd.Inventors: Hajime Arakawa, Osamu Yamaoka, Shinichi Kobayashi, Kunio Okumura, Kanichi Morishita
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Patent number: 4811161Abstract: A through-type capacitor capable of effectively preventing peeling of an insulation resin from a ceramic dielectric and providing an insulation case of the capacitor with heat resistance, tracking resistance, arc resistance to improve burning resistance of the case, resulting in safely and positively operating for a long period of time. The capacitor includes an insulation case arranged to surround a ceramic dielectric and filled with insulation resin materials to embed the ceramic dielectric in the materials. The insulation case includes a first insulation case member formed of thermoplastic resin and arranged to surround the ceramic dielectric and a second insulation case member formed of thermosetting resin and integrally mounted on the first insulation case member.Type: GrantFiled: September 10, 1987Date of Patent: March 7, 1989Assignee: TDK CorporationInventors: Setsuo Sasaki, Shoichi Iwaya, Teruo Taguchi, Seizou Tanaka, Takeyoshi Satoh, Mutsuo Koganebuchi
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Patent number: 4780790Abstract: An electronic device is provided which has a function of an organic film condensor. The device comprises a plural number of electroconductive layers each comprising a monomolecular film of an organic molecule having both of an electroconductive site and a hydrophobic site in combination or a built-up film thereof, and a dielectric layer of a monomolecular film of an organic molecule having both of a hydrophobic site in combination or a built-up film thereof between the electroconductive layers laminated on a substrate.Type: GrantFiled: May 19, 1987Date of Patent: October 25, 1988Assignee: Canon Kabushiki KaishaInventors: Kiyoshi Takimoto, Haruki Kawada, Kunihiro Sakai, Yoshinori Tomida, Hiroshi Matsuda, Kenji Saito, Ken Eguchi, Toshihiko Miyazaki
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Patent number: 4768129Abstract: A through type twin capacitor of higher electric strength has been proposed. In the present capacitor, insulating covers which cover conductive rods passing through ceramic body of the capacitor is extended beyond a lower end of the insulation cover which surrounds the lower portions of the rods, in order to improve the electric strength of the capacitor.Type: GrantFiled: January 14, 1987Date of Patent: August 30, 1988Assignee: TDK CorporationInventors: Setsuo Sasaki, Mutsuo Koganebuchi, Teruo Taguchi
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Patent number: 4758922Abstract: A miniaturized circuit for high frequency operation is formed of four successively superimposed dielectric layers, with a microstrip resonance element being sandwiched between two inner dielectric layers which themselves are sandwiched between opposing ground plane layers, and the other dielectric layers being respectively formed upon these ground plane layers. Circuit connection patterns are formed on the outer faces of the latter dielectric layers, and circuit components mounted thereon to form two circuit sections. The microstrip resonance element can be utilized as an inductive reactance element of an oscillator circuit, or as a filter circuit resonator element, and is effectively shielded by the ground plane layers which also effectively mutually isolate the two circuit sections.Type: GrantFiled: November 16, 1987Date of Patent: July 19, 1988Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Isao Ishigaki, Hiroyuki Yabuki, Mitsuo Makimoto
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Patent number: 4750085Abstract: Capacitor unit including at least three capacitors (16-19) build up from alternate layers of metal and dielectric placed one above the other. The unit includes two insulation films (1, 2) rolled into a coil (9) one of said films being provided with two parallel first metal layers (3, 4) and the other with two second metal layers (6, 7) placed in tandem, both the latter bridging over both said first metal layers. Ore (7) of the second metal layers and both first metal layers (3, 4) are each provided with connection means (12-14) so that a delta circuit of the capacitors (16-19) is formed.Type: GrantFiled: April 22, 1987Date of Patent: June 7, 1988Assignee: Telefonaktiebolaget L M EricssonInventors: Gerth R. Jonsson, Per A. P. Comstedt, Gosta T. Hedqvist, Arne J. Johansson
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Patent number: 4739544Abstract: A method of manufacturing a miniaturized multilayer ceramic capacitor having high capacitance which comprises a dielectric body of the type that the grain boundaries thereof are insulated. Multilayer chips are prepared which consist of a semiconductor ceramic material whose major constituent comprises titanate of alkaline-earth metal such as Ba, Sr or the like; and such chips are placed within a container formed of a fired mixture of CuO and Al.sub.2 O.sub.3 and subjected to a heat treatment so that copper ions which serve as insulating agent, are caused to uniformly diffuse from vapor phase in crystal grain boundaries of the semiconductor ceramics body of each of the chips.Type: GrantFiled: December 11, 1986Date of Patent: April 26, 1988Assignee: Mitsubishi Mining and Cement Co., Ltd.Inventors: Kiyoshi Okazaki, Hideji Igarashi
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Patent number: 4723194Abstract: A structure of a capacitor circuit in accordance with the present invention comprises a plurality of capacitors formed on a semiconductor or conductor substrate in a manner in which insulating films and electrodes are provided alternately. This structure is characterized in that: there are provided a first capacitor and a second capacitor adjacent to each other; the first capacitor and the second capacitor comprise, respectively, first electrodes formed on the substrate through the first insulating film, second electrodes formed on the first electrodes through the second insulating film and third electrodes formed on the second electrodes through the third insulating film, the third electrode of the first capacitor being connected to the second electrode of the second capacitor.Type: GrantFiled: September 25, 1986Date of Patent: February 2, 1988Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yasuyuki Nakamura, Takahiro Miki
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Patent number: 4620166Abstract: A single-winding capacitive filter having two metal layers separated by a dielectric and forming a plurality of capacitors having at least one common wound layer. One of the metal layers protrudes from one end of the wound layer at least for a certain number of turns whose protruding portions are electrically interconnected by a short-circuit. The short-circuiting of one of the wound layers reduces the self inductance of the filter.Type: GrantFiled: October 19, 1982Date of Patent: October 28, 1986Assignee: Zanussi Elettromeccanica S.p.A.Inventors: Americo De Faveri, Sergio Zanvettor, Antonio Savi
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Patent number: 4586112Abstract: A capacitor having two metal foil electrodes connected to two terminals, and a metallized idler having an electrically non-conducting substrate with a metal coating thin enough to be self-healing at pre-determined voltage levels, the metal coating being capacitively coupled to each of the electrodes.Type: GrantFiled: April 30, 1984Date of Patent: April 29, 1986Assignee: Aerovox IncorporatedInventor: Frederick W. MacDougall
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Patent number: 4570031Abstract: A laminated buss bar comprised of a pair of elongated flat conductors separated by an incorporated dielectric/electrode structure, the dielectric/electrode structure being sandwiched between the flat conductors on the opposite sides thereof, and a method of manufacture thereof. The buss bar is formed by depositing a flat layer of dielectric material on the inwardly facing surface of a first flat conductor and then forming an electrode of conductive material on the deposited layer of dielectric material. The inwardly facing surface of the first flat conductor also serves as one electrode of a capacitor. Subsequently, the formed conductive material electrode electrically and mechanically contacts the inwardly facing surface of a second flat conductor. Accordingly, the formed conductive material electrode, dielectric material, and one of the pair of elongated flat conductors form a capacitor.Type: GrantFiled: April 27, 1984Date of Patent: February 11, 1986Assignee: Nippon Mektron Ltd.Inventor: Kazuo Inoue
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Patent number: 4554611Abstract: An electrostatic chuck (1) for holding a semiconductor wafer (5) has a dielectric layer (4) on an electrode (2) and surrounded by an annulus (3) for electrically contacting the wafer. The wafer is located on the dielectric layer but at its periphery contacts the annulus. By applying a potential difference (V) from an external voltage source between the annulus and the electrode the wafer is electrostatically clamped against the chuck. The wafer is displaced rotationally, perpendicularly, and/or laterally on the chuck while the voltage is still connected. This enchances the clamping effect due to charge retention in the dielectric layer after the voltage source has been disconnected.Type: GrantFiled: August 30, 1984Date of Patent: November 19, 1985Assignee: U.S. Philips CorporationInventor: Ian H. Lewin
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Patent number: 4424552Abstract: A condenser block comprising a stack of insulating layers, separated by metal plates, arranged in relation to one another in such a way that at least part of each metal plate is approximately opposite at least part of another plate, in the direction of stacking, these metal plates forming the condenser plates. In this invention, one metal plate, positioned between any pair of insulating layers, and opposite a second metal plate, placed above the first such plate, between a second pair of insulating layers, faces a third metal plate, also placed above the first plate, between a different pair of insulating layers from the second such pair.Type: GrantFiled: May 28, 1982Date of Patent: January 3, 1984Assignee: L.C.C.-C.I.C.E. Compagnie Europeene de Composants ElectroniquesInventor: Roland Saint Marcoux
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Patent number: 4419713Abstract: This specification discloses a multigap series construction for multiple electrode monolithic capacitor structures employing ceramics. The voltage rating of such capacitors increases with each gap added across the dielectric. Additionally, the amount of piezoelectric activity occurring in a piezoelectric dielectric is limited by the series gap arrangement to be below that which causes deleterious spurious signals to be generated when said capacitor vibrates.Type: GrantFiled: July 6, 1981Date of Patent: December 6, 1983Assignee: Centre Engineering, Inc.Inventor: Solomon Levinson
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Patent number: 4379287Abstract: A user, touch actuable switch panel of the capacitive type that includes one or more touch actuable capacitive switches, each switch including at least two capacitive plate elements formed on a dielectric panel. Conductive paths formed on the dielectric panel interconnect the capacitive plate elements to a source for applying signals to the capacitive plate elements forming said capacitive switches and sensing a resulting change in signal level when a selected switch is actuated by the user. Trim tabs formed on the dielectric panel are provided to balance the effect of stray capacitance between the conductive paths and the capacitive plate elements to maintain the level of change of signal at a determined value upon the actuation of each of said one or more capacitive switches.Type: GrantFiled: January 23, 1980Date of Patent: April 5, 1983Assignee: Robertshaw Controls CompanyInventors: Hugh J. Tyler, William H. Conway
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Patent number: 4370698Abstract: In elliptical shaped insulated high voltage ceramic capacitors, subjected to higher heat and temperature, stresses are formed which causes gaps between the insulation and ceramic capacitor. To solve this and other problems a hollow elliptical shaped plastic cover is positioned below the capacitor ground conductor. The cover has a bridge which separates the cross section of the cover into two substantially circular areas an insulator is injected into the cover which also covers the capacitor.Type: GrantFiled: August 12, 1980Date of Patent: January 25, 1983Assignee: TDK Electronics Co., Ltd.Inventor: Setsuo Sasaki
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Patent number: 4352145Abstract: A multiple element, cylindrical metallized film capacitor and method of making the same are provided which facilitate the winding and making of electrical connections to a small value element of the multiple element capacitor. First and second dielectric films are metallized on one side thereof and are wound in cylindrical form with the non-metallized side of one film being in contact with the metallized side of the other. Selective portions of one or both of the metallized sides are removed in order to provide a multiple element device. In one embodiment, a metal strip having a metal tab extending therefrom is wound in an area where one of the metallized sides has been removed and an insulated strip is wound to surround the metal strip which forms one plate of a small capacitor. In another embodiment only a portion of the width of a metallized side of a film is removed providing more turns for the small capacitor to which an electrical connection can be made.Type: GrantFiled: November 5, 1980Date of Patent: September 28, 1982Assignee: American Radionic Co., Inc.Inventor: Robert M. Stockman
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Patent number: 4342143Abstract: Integrated structures of various combinations of inductors, capacitors and resistors are formed by bonded laminations of films of electrical conductors of desired configurations and electrical properties separated by films of dielectric material. Electrical terminals extending from appropriate ones of the conductors may be interconnected selectively to provide various single, series and parallel circuit component arrangements.Type: GrantFiled: May 1, 1978Date of Patent: August 3, 1982Inventor: Thomas A. Jennings
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Patent number: 4312024Abstract: An adjustable capacitor is provided on a printed circuit board or hybrid thick film circuit substrate having first and second metallic sheets separated by a sheet or layer of insulating material. The second sheet is provided with an adjustable portion. The second sheet and adjustable portion are divided into two parts by a cut along a first line. These two parts form capacitors with the first sheet. A third capacitor is formed between the two parts, and the value of this third capacitor can be trimmed or adjusted by cuts across the adjustable portion and preferably perpendicular to the first line until the desired value for the third capacitor is reached.Type: GrantFiled: April 24, 1980Date of Patent: January 19, 1982Assignee: General Electric CompanyInventor: Jurgen Pest
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Patent number: 4290052Abstract: A capacitive touch entry structure utilizes an array of at least one capacitive touch sensor fabricated upon a double-sided printed circuit board adhesively mounted upon a surface of a transparent insulative substrate. The substrate has sufficient thickness to safely insulate user personnel, contacting the substrate surface furthest from an electrode of the capacitive touch sensor, from electrical potentials present adjacent to the panel surface upon which the capacitive touch sensor is fastened. Touch sensor circuitry and interconnections may be advantageously fabricated directly upon the pair of conductive planes, sandwiching an insulative layer therebetween, to form the printed circuit portion of the structure. A conductive guard may also be disposed adjacent to the substrate to shield at least the lead portions of the touch sensors from capacitive effects.Type: GrantFiled: October 26, 1979Date of Patent: September 15, 1981Assignee: General Electric CompanyInventors: Charles W. Eichelberger, Robert J. Wojnarowski
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Patent number: 4267528Abstract: Apparatus is provided for suppressing radio frequency interference radiation at a circuit connection point. The apparatus includes a capacitor having first and second terminals, the first of which is coupled to a substantially planar plate of the capacitor. The first terminal is coupled to the circuit connection point, which may otherwise act as an RFI antenna. The second capacitor terminal is coupled to a point of reference potential for radio frequencies. The capacitor is oriented when mounted so that the planar plate opposes and is substantially parallel to a metallic surface which is at the radio frequency reference potential (e.g., ground). The capacitor suppresses RFI radiation from the circuit connection point by conducting a portion of the RFI energy at that point to the point of RFI reference potential by way of the first terminal, the body of the capacitor, and the second terminal.Type: GrantFiled: May 11, 1979Date of Patent: May 12, 1981Assignee: RCA CorporationInventor: Gerald E. Thornberry
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Patent number: 4263638Abstract: A dual wound capacitor is provided in which two capacitors with a common electrode are provided or two separate capacitors are provided in a single winding operation. First and second metallized dielectric films are wound through a predetermined number of turns to a position preceding a gap in at least one of the metallized sides of the film. The gap is formed by removing or omitting metal from an intermediate portion on the dielectric film either before the capacitor is wound or during the winding process. The gap so formed may be as narrow as an eighth of an inch and, under any circumstance, is substantially less than the length of one winding of the capacitor. An insulated sheet having a length sufficient to encircle the gap is inserted and wound between first and second metallized dielectric films and extends outwardly from one side of the capacitor to form an overlapping circular barrier which separates the metallized portions on each side of the gap.Type: GrantFiled: June 25, 1979Date of Patent: April 21, 1981Assignee: American Radionic Co., Inc.Inventors: Robert M. Stockman, Joseph J. Sipovic
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Patent number: 4247881Abstract: A discoidal monolithic ceramic capacitor being terminated at a hole in the center and at the outer periphery thereof, includes concentric annular electrodes buried in a discoidal ceramic body and arranged to provide series connected equal value sub-capacitors to reduce dielectric stress and permit operation at high voltages. Misregistration of the concentric annular electrodes in one plane with respect to those in another plane may occur in manufacturing without disturbing the balance in the equal sub-capacitor values and thus even distribution of voltage stress in the ceramic dielectric.Type: GrantFiled: April 2, 1979Date of Patent: January 27, 1981Assignee: Sprague Electric CompanyInventor: James H. Coleman
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Patent number: 4188651Abstract: A reduced barium titanate ceramic capacitor in the form of a rod has closely-spaced electrodes connected in parallel or two spiraled electrodes on the surface thereof and a dielectric layer underneath each. By reducing both the distance between adjacent electrodes and the width of the electrodes, a capacitor with a low power factor is obtained.Type: GrantFiled: March 27, 1978Date of Patent: February 12, 1980Assignee: Sprague Electric CompanyInventors: John E. Dornfeld, Bobby L. Joyner
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Patent number: 4170812Abstract: An auxiliary capacitor is added to a first capacitor formed from two metallized films wound into a cylindrical roll. Once the two metallized films have been wound a sufficient number of layers to form a capacitor having the desired capacitance, the auxiliary capacitor is added by one of two methods. In the first method, one of the metallized films is cut and a plain film is inserted between the roll and the uncut metallized film. After the plain film has been inserted and wound a portion of a turn, a metal foil is inserted between the plain film and the dielectric side of the uncut metallized film. The two films and foil then are wound together a sufficient number of layers to form the desired capacitance of the auxiliary capacitor.An electrical contact foil may be added between the plain film and the metal foil or the metal foil may be left slightly exposed for electrical contact to be made to it.In the second method both metallized films are first terminated. The core then may be sealed and heat treated.Type: GrantFiled: September 14, 1977Date of Patent: October 16, 1979Assignee: Advance Transformer Co.Inventor: Glenn D. Rayno
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Patent number: 4167035Abstract: A voltage multiplier of the Cockroft-Walton type in which the ac-- and dc-- operated capacitors are arranged in respective separate capacitor winding rolls, the two rolls being arranged side by side on a common axis and the diodes being arranged between the two rolls.Type: GrantFiled: July 25, 1977Date of Patent: September 4, 1979Assignee: U.S. Philips CorporationInventor: Gerald A. Willard
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Patent number: 4161766Abstract: A laminated capacitive touch-pad having a thin film touch-plate electrode deposited upon a first (exterior) surface of a first, relatively thin dielectric layer and having spaced transmitter and receiver electrodes deposited upon a second surface of the first layer within the outline of and opposite to the touch electrode, with a relatively thick backing layer of dielectric material laminated upon the second surface to provide a total thickness, as measured between the furthest opposed surfaces of the first and second layers, as required for high voltage insulation purposes and to provide additional impact strength. The touch, transmitter and receiver electrodes may be of thin film construction.Type: GrantFiled: May 23, 1977Date of Patent: July 17, 1979Assignee: General Electric CompanyInventors: Donald E. Castleberry, Wesley K. Waldron
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Patent number: 4152748Abstract: A transducer system comprising, a multiple capacitive transducer having a flexible dielectric sheet of elastic nonconductive material, a first plate of flexible conductive material defining a region located adjacent a first surface of the sheet, and a plurality of second plates of flexible conductive material located adjacent a second surface of the sheet, with the second plates defining areas aligned with the region of the first plate. The system separately forms signals responsive to the capacitance between the first and second plates.Type: GrantFiled: May 5, 1977Date of Patent: May 1, 1979Inventor: Edward J. Arkans
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Patent number: 4136291Abstract: A dynamic biasing capacitance is formed between a transmitting electrode and a receiving electrode of a capacitive touch-pad device to couple a portion of the scan voltage signal into the sense node of a voltage comparator circuit, coupled to the receiving electrode, to offset the comparator circuit threshold voltage. The dynamic biasing capacitance may be formed by overlapping portions of the electrodes, with a dielectric layer positioned therebetween, or by the parasitic capacitance between aligned end surfaces of the two electrodes, with the magnitude of the dynamic biasing capacitance being adjusted by variation of interelectrode geometries.Type: GrantFiled: May 23, 1977Date of Patent: January 23, 1979Assignee: General Electric CompanyInventor: Wesley K. Waldron
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Patent number: 4074340Abstract: Incrementally adjustable multilayer monolithic capacitors having a set of base electrodes extending to and being coextensive with a first terminal end surface of the capacitor and a set of incremental electrodes extending to and being coextensive with a side surface of the capacitor. The base electrodes are electrically interconnected by a conductive metal coating on the first terminal end surface. Capacitance values of the resultant capacitor can be incrementally adjusted by electrically interconnecting or disconnecting one or more of the incremental electrodes either along the side surface to which they extend and are coextensive with or along the second terminal end surface of the capacitor.Type: GrantFiled: October 18, 1976Date of Patent: February 14, 1978Assignee: Vitramon, IncorporatedInventor: William C. Leigh
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Patent number: 4048593Abstract: An integrated electrical component is provided which functions as an inductive-capacitive network, and which may be used, for example, to form a filter, transformer, or the like. The component includes distributed capacitance and inductance with external connections to permit a variety of distributed element configurations, which results in the elimination of spurious electromagnetic radiation from the component and in the packaging of a multiple-pole filter in an extremely compact configuration, so as to provide a variety of filter networks, or the like, each of high quality factor (Q). The component comprises one or more sheets of dielectric material formed, for example, of a ceramic, and having one or more conductive sheets positioned on each dielectric sheet. The resulting assembly is turned into a spiral configuration, as will be described, to form the component, and the resulting assembly is then cured.Type: GrantFiled: October 9, 1975Date of Patent: September 13, 1977Inventor: Jack H. Zillman