Geometrical instruments
Patent
1975-06-30
1977-03-08
Lake, Roy
Geometrical instruments
339182R, 339209, H01R 1718
Patent
active
040110001
ABSTRACT:
For use with plugs of the type designed for insertion into cigar lighter receptacles. The new receptacle uses a plastic part as the housing and insulator. A simple open seamed brass cylinder is inserted inside a well of the housing to serve as the negative contact. The positive contact in the center of the bottom of the well is affixed with a rivet. The negative terminal is affixed to the sleeve, and the positive terminal is attached with the rivet. When used as an extension cord, a snap on end cap protects the electrical connections. When used as a portion of a wall receptacle as in recreational vehicles, the plastic housing extends beyond the terminals to prevent a short to the outer metal skin of the vehicle. The receptacle may also be used for a cigar lighter, by using a bi-metal element for the positive contact, and using a high temperature plastic for the housing.
REFERENCES:
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patent: 1090528 (1914-03-01), Freeman
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patent: 2292038 (1942-08-01), Benander
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patent: 2788501 (1957-04-01), Buquor et al.
patent: 3040285 (1962-06-01), Stanley
Abrams Neil
Lake Roy
Marquis Industries, Inc.
Newman Gerald M.
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