Safety lampholder for Christmas tree light sets and the like

Details Safety lampholder for Christmas tree light sets and the like Safety lampholder for Christmas tree light sets and the like

1994-12-22

1996-11-12

Bradley, P. Austin

Electrical connectors

With coupling movement-actuating means or retaining means in...

Including movement of coupling part about axis

439419, 439662, 439667, H01R 424

Patent

active

055734197

ABSTRACT:
A safety lampholder has center and side contacts which are concealed and cannot easily be touched by fingers when the lamp screw base is not threaded into the screwthreads. Ring and tip contacts of the lamp screw base are disposed in contact with the center and side contacts of the lampholder when the lamp screw base is threaded into position. The inside wall of the lampholder has separated steps, which have a uniform chambered angle R meeting UL specifications and which define the screwthread for mounting the lamp screw base.

REFERENCES:
patent: 1727148 (1925-05-01), White
patent: 5385485 (1995-01-01), Fu
patent: 5439389 (1995-08-01), Cheng et al.
patent: 5474467 (1995-12-01), Chen

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