Tresness Irrevocable Patent Trust

Other

Arrow Communication Laboratories, Inc.

Andrew F Tresness

Martin L Zelenz

Jerry M Gould

A spark gap for protecting electronic circuits from excessive electrical surges comprises a substrate containing an opening, a dielectric medium occupying the opening, and first and second electrodes. The first electrode is embedded in the substrate, on one side of the opening, and has a first conductive surface that extends through the substrate and is substantially exposed in the opening and to the dielectric medium. The second electrode is embedded in the substrate, on another side of the opening, and has a second conductive surface that extends through the substrate and is substantially exposed in the opening and to the dielectric medium. The first conductive surface is in opposing relation to the second conductive surface, and they are spaced apart by a predetermined distance to establish a gap width. An electrical arc is generated across the opening when a voltage potential difference between the conductive surfaces exceeds a threshold value.

Spark gap apparatus

An electronic filter assembly comprises a housing, first and second circuit board surfaces, first and second cable TV filter circuits, a ground plane, and first and second electrical terminals. The housing includes first and second cable connectors in opposed relation to each other and contains an interior volume. The circuit board surfaces are in superposed relation to each other and engage the housing within the interior volume. The circuit board surfaces face away from each other in opposite directions. The cable TV filter circuits are mounted on the circuit board surfaces, respectively. The ground plane is disposed between the circuit board surfaces. The ground plane contacts the filter housing within the interior volume. The electrical terminals are coupled to the filter circuits. The first terminal extends into and is supported inside the first cable connector, and the second terminal extends into and is supported inside the second cable connector.

Electronic filter assembly

An electronic filter assembly of the type that includes a female terminal cap having a fitting portion and containing a terminal passage through the fitting portion, and a collet assembly secured in and substantially closing the terminal passage of the female terminal cap. The collet assembly comprises an insulator, a collet terminal, and a seal. The insulator is made from a single piece of insulator material, containing a bore therethrough. The collet terminal extends through the bore of the insulator. The seal is located inside the terminal passage of the female terminal cap, between the collet terminal and the female terminal cap.

A filter assembly, comprising first and second terminal caps in opposing relation to each other. The caps are physically and electrically coupled to each other. First and second circuit boards are physically coupled to the first cap. The first circuit board includes&mdash;(i) front and rear surfaces, (ii) a first circuit located on either or both of the front and rear surfaces, (iii) a ground lead connected to the first circuit, and (iv) a first electrical terminal coupled to the first circuit. The second circuit board includes&mdash;(i) front and rear surfaces, (ii) a second circuit located on either or both of the front and rear surfaces, (iii) a ground lead connected to the second circuit, and (iv) a second electrical terminal coupled to the second circuit. The first and second circuits are electrically coupled to each other, and each are electrically coupled to the first terminal cap via the ground leads. The circuit boards are positioned substantially parallel to each other. The terminals extend into and are operatively supported inside the terminal caps, respectively.

The present invention is a passive filter for controlling the return path loss in a communication system having a forward path and return path. The filter comprises first and second terminals, a passive filter network, and a compensation circuit. The passive filter network is coupled to the first and second terminals and to ground. The filter network has a first passband which passes signals in the forward path and a second passband which passes signals in the return path. The filter network includes a passive attenuator network which attenuates signals in the return path by a predetermined amount as the signals pass through the second passband. The compensation circuit is coupled to the passive filter network, and is configured to compensate for expected perturbations in the frequency response of the second passband of the filter network.

Return path attenuation filter

A filter for controlling the return path loss in a multi-channel communication system having forward and return paths. The filter comprises a forward path filter network, and a return path filter network. The forward path network passes signals in the forward path, and includes at least one resonant circuit component, such as a capacitor, which is coupled to the return path network. The return path network passes signals in the return path, and includes at least one resonant circuit, such as a series LC trap to ground. A combined resonant circuit is formed, at least in part, by the resonant circuit of the return path network and the resonant circuit component of the forward path network (e.g., a combined series LC trap to ground). The return path network further includes an attenuator network which is designed to attenuate the signals in the return path frequency band. Preferably, the attenuator network is a resistive network which provides a predetermined amount of flat loss.

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Manlius, NY, United States of America

Andrew F Tresness