Electricity: conductors and insulators – Conduits – cables or conductors – Single duct conduits
Patent
1977-08-17
1978-11-28
Truhe, J. V.
Electricity: conductors and insulators
Conduits, cables or conductors
Single duct conduits
29625, 200 5A, 200159B, H05K 100
Patent
active
041277406
ABSTRACT:
A universal printed circuit pattern of conductors for use in connection with diaphragm-type push button electrical switch panels which allows the printed circuit board to be physically sheared along plural axes to accommodate switch panels of varying sizes without destroying electrical continuity of the ground or common conductor thereon.
REFERENCES:
patent: 2666254 (1954-01-01), Eisler
patent: 3531603 (1970-09-01), Ashman
patent: 3648116 (1972-03-01), Baugher et al.
patent: 3676607 (1972-07-01), Nash et al.
patent: 3728509 (1973-04-01), Shimojo
Bouchard J. H.
Haugen Orrin M.
Nikolai Thomas J.
Sheldahl Inc.
Truhe J. V.
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