Illumination – Supports – Standard-type support
Patent
1991-10-25
1992-10-06
Cole, Richard R.
Illumination
Supports
Standard-type support
362927, F21V 2126
Patent
active
051526034
ABSTRACT:
A fall-proof structure to prevent the connecting rods of a lamp from falling down, in which the lower ends of the connecting rods each have a threaded end and two symmetrical lugs; the connecting rod is to be connected together with a threaded sleeve having a slot; the outer end of the threaded sleeve is mounted with an adjusting nut, a spring washer, and a washer; then, the threaded sleeve passes through a round hole of the base housing, and is mounted, inside the base housing, with a rotation-limiting disk, and a power-connecting plate; finally, the end of the connecting rod is mounted with a slip-resistant nut. The lower part of the base housing has a limiting groove for receiving the lug of the rotation-limiting disk. The tightness of the connecting rods can be adjusted by turning the adjusting nut; the rotation-limiting disk and the limiting groove in the base housing are used for preventing the connecting rods from falling down.
REFERENCES:
patent: 2346234 (1944-04-01), Reynolds
patent: 3341702 (1967-09-01), Neumann
patent: 4847740 (1989-07-01), Laske
patent: 4974139 (1990-11-01), Chin-Song
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