Aerovox

Other

Toray Industries, Inc.

Electric Power Research Institute Incorporated

Toray Plastics (america), Inc.

Parallax Power Components, LLC

Martin Hudis

James C Fletcher

Nikola Marincic

Daniel A Wycklendt

Kenji Hatada

Theodore J Wydeven

Glenn Grenier

Mamoru Koebisu

Mulk Arora

David Jenkins

Robert Hutchinson

A capacitor of the type having a cathode and an anode and an electrolyte disposed between the cathode and the anode, the capacitor including an electrochemical cathode including a metal current collector, at least one conductive adhesion layer deposited on the metal current collector, a finely divided material deposited on the adhesion layer, an electrolytic anode including an oxide forming metal and a corresponding insulating metal oxide, and an electrolyte in contact with the finely divided material on the cathode and the oxide on the anode.

Non-symmetric capacitor with conductive adhesion layer for cathode

A simpler, lower-cost way of installing polymer capacitor canisters on motors and other equipment. A bracket and/or fastener is attached to the canister (e.g., by ultrasonic welding a polymer fastener or bracket directly to the polymer canister), and the fastener and/or bracket are used to make the connection between the canister and the equipment. E.g., fasteners may be chosen so that they mate with holes or matching fasteners on the equipment to which the capacitor is being attached. Depending on choice of fastener, installation of the capacitor becomes a simple snap-in action. The capacitor manufacturer can now easily manufacture capacitors with a wide range of built-in fastener arrangements, relieving the equipment manufacturer of most of the work formerly associated with installing a capacitor on equipment.

Capacitor mounting

A capacitor having an electrochemical cathode electrode, an electrolytic anode electrode, and a substantially non-aqueous electrolyte disposed between the cathode and anode electrodes. The cathode includes a metal and a finely divided material, i.e. a conducting material with a very high ratio of surface area to volume. The anode includes an oxide forming metal and a corresponding metal oxide. The substantially non-aqueous electrolyte is in contact with the finely divided material forming a double layer electrochemical cathode capacitor. The cathode provides the foundation for interleaving a plurality of anodes with a plurality of cathodes. Insulating layers separate the interleaved anodes from the cathodes.

Non-symmetric capacitor

A film capacitor in which the unmetallized margin is provided with a semiconductive layer. The layer provides a parallel resistive path within the capacitor, itself, obviating the need for an external resistor. It also grades the electric field across the margin, i.e., makes the field more uniform, thus allowing the margin to be made narrower without electrical breakdown, permitting a reduction in the physical size of the capacitor. A refractory, semiconductive layer is provided between the metal layer and the dielectric film. The refractory layer accelerates the self-clearing process, by insulating the underlying dielectric film from the heat generated by the vaporizing metal, thus hastening vaporization and reducing the tendency of the dielectric film to carbonize. As a result, faults are cleared with substantially less energy consumption. Preferably, the refractory layer is also semiconductive, to reduce field emission effects, and thereby decrease the frequency of faults in the dielectric film.

Metallized film for electrical capacitors having a semiconductive layer

A polymer-encased capacitor with a pressure sensitive interruption (PSI) system includes a polymer cover attached to a polymer case, the polymer cover having a skirt-less outer portion ultrasonically sealed to an open end portion of the polymer case. The polymer cover does not include flanged or lipped members extending from the outer edge of the cover (i e., 'skirt-less') so that application of ultrasonic energy to the cover does not excite modes of vibration in which vibration nodes occur at intervals around the periphery of the cover, thereby providing a more leak-tight and rupture-proof bond between the capacitor case and cover.

Leak-tight and rupture proof, ultrasonically-welded, polymer-encased

A plasma polymerization process for the deposition of a dielectric polymer coating on a substrate comprising disposing the substrate in a closed reactor between two temperature-controlled electrodes connected to a power supply, maintaining a vacuum within the closed reactor, causing a monomer gas or a gas mixture of a monomer and diluent to flow into the reactor, generating a plasma between the electrodes, and varying and controlling the dielectric constant of the polymer coating being deposited by regulating the gas total and partial pressures, the electric field strength and frequency, and the current density. A monomer, such as a polar saturated or unsaturated nitrogen-containing compound, or a monomer and diluent, such as a saturated or unsaturated aliphatic hydrocarbon and nitrogen, can be polymerized to form a dielectric coating having a varying dielectric constant in accordance with this plasma polymerization process.

Preparation of dielectric coatings of variable dielectric constant by

A current limiting fuse construction including a fuse element extending between electroconductive terminals carries a body of arc-quenching filler material within a hollow casing of electric insulating material. The filler material includes loose granular insulating material, such as sand, and larger particles of material uniformly distributed throughout the sand as a resin vaporizable in response to the heat of an arc current. According to a second embodiment a stratified filler comprises uniformly spaced layers alternately occurring between sand and a sand/resin mixture to increase arc voltage.

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Mattapoisett, MA, United States of America

Martin Hudis