1
Francis V Cunningham: High voltage protection apparatus. Joslyn Mfg and Supply Co July 10, 1979: US04161012 (68 worldwide citation)

Arresters for protecting electrical equipment from damage or destruction due to overvoltage surges, for example overvoltage surges caused by lightning strokes, are provided that are fabricated or assembled integrally with cable taps, cable joints, separable insulated connector apparatus, and overhea ...


2
Francis V Cunningham: Gas operated electrical connector. Joslyn Corporation April 18, 1989: US04822291 (41 worldwide citation)

A high voltage insulated bushing module of the gas operated fault closure type for connection with the probe of a mating insulated elbow module is disclosed. The module includes a snuffer tube adapted to perform as a piston within a piston cylinder cut from a length of drawn aluminum tubing. A conne ...


3
Francis V Cunningham, Michael A Fanizza: Surge protector. Joslyn Mfg and Supply Co October 19, 1976: US03987343 (20 worldwide citation)

A surge protector or arrester for providing surge protection for relatively low voltage or secondary equipment, circuits and systems includes a vertically stacked, parallel arrangement of two, independent, spark gap and valve block assemblies, the components of which are generally horizontally dispo ...


4
Francis V Cunningham: Fault current interrupter and explosive disconnector for surge arrester. Joslyn Corporation March 29, 1988: US04734823 (15 worldwide citation)

A fault current interrupting disconnector, or fault disconnector, for a surge arrester operates to separate an electrical lead or ground lead wire from a damaged arrester and to interrupt the current flowing through the damaged arrester. The new fault disconnector includes an explosive charge, a tub ...


5
Francis V Cunningham: Disconnector for surge arrester. Joslyn Mfg and Supply Co September 11, 1984: US04471402 (15 worldwide citation)

A disconnector for a surge arrester explosively separates an electrical lead wire, normally a ground lead wire, from the arrester to prevent a permanent fault and to provide an indication of a failed arrester. The disconnector includes an elongated, frangible insulating housing having an elongated o ...


6
Francis V Cunningham, Michael A Fanizza: Surge protector. Joslyn Mfg and Supply Co August 15, 1978: US04107567 (11 worldwide citation)

A surge protector or arrester for providing surge protection for relatively low voltage or secondary equipment, circuits and systems includes a vertically stacked, parallel arrangement of two, independent, spark gap and valve block assemblies, the components of which are generally horizontally dispo ...


7
Francis V Cunningham: Spark gap for achieving arc elongation and compression without the use of supplementary magnetic means. Joslyn Mfg and Supply Co October 4, 1977: US04052639 (4 worldwide citation)

A current limiting spark gap for use in a valve type lightning or surge arrester includes a plurality of identical, mirror-image insulating gap plates assembled together to define arc elongation and cooling chambers between each pair of adjacent gap plates. Conductive electrodes are disposed on oppo ...


8
Francis V Cunningham: Valve type surge arrester. Joslyn Mfg and Supply Co March 8, 1977: US04011485 (3 worldwide citation)

A valve type surge arrester includes a line terminal disposed partially within and spaced from a conductive outer housing that functions as a ground terminal. The surge arrester is formed with an extremely compact configuration and occupies only approximately 0.17 cubic inches of volume. Also dispos ...


9
Francis V Cunningham: Current limiting spark gap for achieving arc elongation, division and compression without the use of supplementary magnetic means. Joslyn Mfg and Supply Co March 4, 1980: US04191908 (2 worldwide citation)

A current limiting spark gap for use in a high voltage valve type lightning or surge arrester includes a plurality of insulating gap plates assembled together in a vertical stack to define a generally horizontally extending arc elongation and cooling chamber between adjacent plates. Series gap elect ...


10
Francis V Cunningham: Surge arrester with improved insulative bracket. Joslyn Corporation November 20, 1990: US04972291 (1 worldwide citation)

The insulative support bracket of a surge arrester includes a concentric annular concavity formed at one or both ends of a bolt hole. A washer, when pressed concentrically to the concavity, contacts the insulative bracket only, at least initially, at surfaces adjacent the outer diameter of the washe ...



Click the thumbnails below to visualize the patent trend.