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Class 361/272 - With protection or compensating means


Subclass of Class 361 - Electricity: electrical systems and devices
Definition: Subject matter having means to safeguard against breakdowns
No. of patents: 134
Last issue date: 10/21/2008


1        
NumberTitleIssue Date
7440254Micro-electromechanical variable capacitor
A micro-electromechanical variable capacitor with first and second capacitor plates spaced apart to define a gap therebetween. The first plate has two control electrodes and an active electrode. The second plate is movable relative to first plate when a voltage is a...
10/21/2008
7426101Container having an overpressure safety device
In one embodiment, a container with an overpressure safety device comprises a wall having a depression in at least a portion of the wall that expands when the pressure inside the container exceeds a predetermined level. The container further comprises a clamp bridgi...
09/16/2008
7410510Process of producing activated carbon for electrode of electric double layer capacitor
A process for producing an activated carbon for an electrode of an electric double-layer capacitor, includes a step of subjecting a carbonized material to an alkali activating treatment, wherein the carbonized material has an average true specific gravity of 1.450 t...
08/12/2008
7411774Voltage variable capacitor
A charge storage device having a capacitance that is variable by alteration of the relative permittivity of the dielectric positioned between conductive electrodes within the device. The device consists of two conductive plates sandwiching a conductive grid, typical...
08/12/2008
7400488Variable capacitance membrane actuator for wide band tuning of microstrip resonators and filters
A device for varying the capacitance of an electronic circuit is disclosed. The device comprises a flexible membrane located above the electronic circuit, a metal layer connected to the flexible membrane, and bias circuitry located above the membrane. Variation of t...
07/15/2008
7394641MEMS tunable capacitor with a wide tuning range
A MEMS tunable capacitor and method of fabricating the same, includes a plurality of fixed charge plates on a substrate, the plurality of fixed charge plates having a same height, being arranged in a shape of comb-teeth and being electrically connected to one anothe...
07/01/2008
7385800Micro-electro-mechanical system (MEMS) capacitors, inductors, and related systems and methods
According to one aspect, the subject matter described herein includes a MEMS fixed capacitor and a method for fabricating the MEMS fixed capacitor. The MEMS fixed capacitor can include a first stationary, capacitive plate on a substrate. Further, the MEMS fixed capa...
06/10/2008
7369394Variable capacitor, circuit module, and communications apparatus
A variable capacitor includes a supporting substrate and a plurality of variable capacitance elements, and bias lines. The plurality of variable capacitance elements is formed on the supporting substrate, each of which is composed of a lower-laid first electrode lay...
05/06/2008
7323516Peroxide curable butyl formulations for rubber articles
The present invention is directed to a peroxide curable rubber compound containing a butyl rubber polymer and an olefin polymer of ethylene and at least one α-olefin. The present invention is also directed to a peroxide curable rubber compound containing a butyl po...
01/29/2008
7324323Photo-sensitive MEMS structure
A heat-sensitive apparatus includes a substrate with a top surface, one or more bars being rotatably joined to the surface and having bimorph portions, and a plate rotatably joined to the surface and substantially rigidly joined to the one or more bars. Each bimorph...
01/29/2008
7324796Low temperature co-fired ceramic sub-harmonic mixer
A sub harmonic mixer has improved electrical performance in a small package size. The mixer has a low temperature co-fired ceramic substrate. Coupled lines are located within the substrate and connected to an LO port, an RF port and an intermediate frequency port. T...
01/29/2008
7319580Collapsing zipper varactor with inter-digit actuation electrodes for tunable filters
According to one embodiment a microelectromechanical (MEMS) switch is disclosed. The MEMS switch includes a substrate, a plurality of actuation electrodes mounted on the substrate, a plurality of bottom electrodes mounted on the substrate, a capacitor having subcomp...
01/15/2008
7319599Module incorporating a capacitor, method for manufacturing the same, and capacitor used therefor
A module incorporating a capacitor, the module including a circuit board and a layer incorporating a capacitor, wherein the circuit board includes a wiring layer and a via contact for providing electrical conductivity to a cathode and an anode of the capacitor. The ...
01/15/2008
7303974Method for producing electrochemical capacitor electrode
A method is provided for optimizing the physical characteristics of a coating solution for an undercoat layer formed between a polarizable electrode layer and surface-roughened collector. A first step is carried out to form an undercoat layer on a collector whose su...
12/04/2007
7303975Method for producing electrochemical capacitor electrode
A method is provided for optimizing the physical characteristics of a coating solution for a polarizable electrode layer formed on a collector. A first step is carried out to prepare a coating solution that includes porous particles, a fluorine-based binder, a good ...
12/04/2007
7283347Low cost digital variable capacitor
A digital variable capacitor package is provided as having a ground plane disposed on predetermined portion of the top surface of a substrate. An elongated signal electrode may also be disposed on the substrate and including a first end defining an input and a secon...
10/16/2007
7259417Direct digitally tunable microwave oscillators and filters
A tunable element in the microwave frequency range is described that may include one or more tunable elements that are directly digitally controlled by a digital bus connecting a digital control circuit to each controlled element. In particular, each digital signal ...
08/21/2007
7251121Electronically variable capacitor array
A capacitor array may include a bottom electrode, a plurality of top electrodes, at least one dielectric medium and a plurality of switching mechanisms. Each switching mechanism may separably electronically connect two or more top electrodes. The at least one dielec...
07/31/2007
7242569Tunable capacitors using fluid dielectrics
Capacitors 10, 20, 40, 50, 70, 80) having a fluid dielectric material that is transported or undergoes a phase change are disclosed. The dielectric medium change results in a change in the total dielectric constant of the material between the electrodes (1...
07/10/2007
7206188System and method for level control of an encapsulant for capacitor sections
A self protected fluid filled capacitor that includes a capacitor section. Preferably, the capacitor section is configured to attach to a cover that can be placed on a capacitor housing. The capacitor contains an insulating fluid that surrounds the capacitor section...
04/17/2007
7206186Hermetically sealed electrolytic capacitor
An electrolytic capacitor is provided having a metal-glass-metal hermetic seal and a liquid seal, which protects the hermetic seal from the electrolyte solution in the capacitor. The liquid seal is formed by compressing an elastomeric ring between the underside of t...
04/17/2007
7206185Capacitor device and fabricating method thereof
The invention relates to a capacitor device comprising the combination of a cylindrical capacitor and a holder for holding the capacitor in a sideways position. The holder includes a capacitor holding part that has an opening at the top and is arc-shaped in cross se...
04/17/2007
7203053Capacitor for multiple replacement applications
A capacitor provides a plurality of selectable capacitance values, by selective connection of six concentrically wound capacitor sections of a capacitive element each having a capacitance value. The capacitor sections each have a respective section element terminal ...
04/10/2007
7203052Method of fabricating MEMS tunable capacitor with wide tuning range
A MEMS tunable capacitor and method of fabricating the same, includes a plurality of fixed charge plates on a substrate, the plurality of fixed charge plates having a same height, being arranged in a shape of comb-teeth and being electrically connected to one anothe...
04/10/2007
7161791Variable capacitance membrane actuator for wide band tuning of microstrip resonators and filters
A device for varying the capacitance of an electronic circuit is disclosed. The device comprises a flexible membrane located above the electronic circuit, a metal layer connected to the flexible membrane, and bias circuitry located above the membrane. Variation of t...
01/09/2007
7092232Variable capacitance capacitor, circuit module, and communications apparatus
A variable capacitance capacitor has a plurality of variable capacitance elements, using a thin-film dielectric layer whose dielectric constant varies with voltage application, connected in series with one another between the high-frequency signal input and output t...
08/15/2006
7085122MEMS tunable capacitor based on angular vertical comb drives
A MEMS tunable capacitor with angular vertical comb-drive (AVC) actuators is described where high capacitances and a wide continuous tuning range is achieved in a compact space. The comb fingers rotate through a small vertical angle which allows a wider tuning range...
08/01/2006
7085121Variable capacitance membrane actuator for wide band tuning of microstrip resonators and filters
A device for varying the capacitance of an electronic circuit is disclosed. The device comprises a flexible membrane located above the electronic circuit, a metal layer connected to the flexible membrane, and bias circuitry located above the membrane. Variation of t...
08/01/2006
7069649Capacitor device and fabricating method thereof
The invention relates to a capacitor device comprising the combination of a cylindrical capacitor and a holder for holding the capacitor in a sideways position. The holder includes a capacitor holding part that has an opening at the top and is arc-shaped in cross se...
07/04/2006
7061745Variable capacitor adjustable by linear motor
The disclosure describes a variable capacitor device, which is formed by a linear motor and a variable capacitor having at least one stator electrode and a movable electrode. A piezoelectric transducer of the linear motor is frictionally coupled to the movable elect...
06/13/2006
7031136Variable capacitors, composite materials
Tunable capacitors (10, 20, 30, 40) have a dielectric material (16, 26, 36, 42) between electrodes, which dielectric material comprises an insulating material (17, 27, 37, 42) and electrically conductive material, (18, 28, 38, 48) e.g., c...
04/18/2006
7016178Capacitor housing
A housing for an electrochemical cell having at least a first electrode and a second electrode. The housing includes a lid having a first indentation to contact the first electrode, and a bottom having a second indentation to contact the second electrode. The first ...
03/21/2006
7006347Low deformation electrolytic capacitor
The present invention relates to electrolytic capacitors and, more particularly, to the reduction of water content within an electrolytic capacitor. Aluminum electrolytic capacitors tend to degrade with time. This is due, in part, to water in the electrolyte attacki...
02/28/2006
7002787Capacitor apparatus of the capacity variable type
The present invention is directed to a capacitor apparatus of the capacity variable type. This capacitor apparatus is manufactured by Micro Electro-Mechanical System technology, and comprises an insulating substrate (2) in which at least two capacitor electro...
02/21/2006
6970340Capacitor apparatus of the capacity variable type
The present invention is directed to a capacitor apparatus of the capacity variable type. This capacitor apparatus is manufactured by Micro Electro-Mechanical System technology, and comprises an insulating substrate (2) in which at least two capacitor electro...
11/29/2005
6963481Decreasing load on devices for mass spectrometers
A detector assembly including a support element, a first capacitor plate and a second capacitor plate. The support element is configured to attach the detector assembly to a chamber wall that separates a lower pressure region and a higher pressure region. A surface ...
11/08/2005
6961228Capacitor apparatus of the capacity variable type
The present invention is directed to a capacitor apparatus of the capacity variable type. This capacitor apparatus is manufactured by Micro Electro-Mechanical System technology, and comprises an insulating substrate (2) in which at least two capacitor electro...
11/01/2005
6937456Direct digitally tunable microwave oscillators and filters
A tunable element in the microwave frequency range is described that may include one or more tunable elements that are directly digitally controlled by a digital bus connecting a digital control circuit to each controlled element. In particular, each digital signal ...
08/30/2005
6930874High current capacitors
A capacitor including an expandable part fabricated on a capacitor housing is enclosed. The expandable part is expandable by a fault that occurs within the capacitor housing, thereby extending the capacitor housing to contact with an external interrupter. The extern...
08/16/2005
6903915Variable capacitor voltage-controllable by use of coulomb blocking phenomenon
Variable capacitive device, such as a capacitor, controllable in voltage Vc including at least one first armature (L) and one second armature (R), the armatures being separated by an insulation layer (D) including several conducting aggregates separated from each ot...
06/07/2005
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