Polarized threaded lamp base

Details Polarized threaded lamp base Polarized threaded lamp base

1981-06-15

1986-09-09

Weidenfeld, Gil

Geometrical instruments

339144R, 40 18, 362295, 313324, H01R 13642

Patent

active

046104984

ABSTRACT:
A polarized screw base assuring constant angular orientation of a lamp has a polarizing locator for engaging a stop in a mating socket. The locator consists of a length of metal rod welded lengthwise on the crest of a base thread with multiple spot welds to assure adequate shear strength. The leading end of the locator is formed with a hooked or alternatively with a balled end to achieve a locking effect with the stop in the socket.

REFERENCES:
patent: 902032 (1908-10-01), Whitney
patent: 1138293 (1915-05-01), Hubbell
patent: 1881091 (1932-10-01), Myers
patent: 1932132 (1933-10-01), Cherry
patent: 2844979 (1958-07-01), Schiller et al.
patent: 3813115 (1974-05-01), French
patent: 4341975 (1982-07-01), Phillipp et al.

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