Aluminum base for electric lamps having a plastic coating for im

Details Aluminum base for electric lamps having a plastic coating for im Aluminum base for electric lamps having a plastic coating for im

1978-08-09

1979-12-11

Lake, Roy

Geometrical instruments

339114, 339146, H01R 302

Patent

active

041780590

ABSTRACT:
A screw base for high intensity discharge lamps or for larger sizes of incandescent lamps utilizes a threaded aluminum shell coated with a thin film of polytetrafluoroethylene. The thin film is penetrated at points of maximum contact pressure with the socket to provide electrical continuity while effecting a low friction surface preventing galling and sticking of the base in the socket and permitting easy lamp insertion and removal.

REFERENCES:
patent: 1658752 (1928-02-01), Wilford
patent: 2047023 (1936-07-01), Geiger et al.

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