Spotlight with user-friendly fixable adjustable focus

Details Spotlight with user-friendly fixable adjustable focus Spotlight with user-friendly fixable adjustable focus

2007-06-18

2009-08-25

Alavi, Ali (Department: 2875)

Illumination

Self powered lamp

With movable focusing element

C362S157000, C362S158000, C362S188000

Reexamination Certificate

active

07578599

ABSTRACT:
The present invention is a spotlight with adjustable focus that has a focus fixing mechanism to prevent inadvertent changes to the focus of the light, while still allowing user-friendly intentional adjustment of the focus. The mounting neck of the reflector assembly rotates on threads on the lamp assembly so that the focus of the light may be adjusted. The focus is fixed in position by a plurality of ridges and valleys on the lamp assembly that mate with corresponding ridges and valleys in the neck of the reflector assembly. The neck of the reflector assembly is sufficiently flexible or expandable so that the focus of the lamp may be intentionally changed by applying sufficient rotational force, without requiring the user to physically interact with any sort of detent or locking mechanism. The neck is sufficiently rigid so that the reflector assembly will not rotate as a result of incidental vibrations or movement.

REFERENCES:
patent: 4586117 (1986-04-01), Collins
patent: 4814957 (1989-03-01), Dennis
patent: 7101057 (2006-09-01), Parker et al.
patent: D556352 (2007-11-01), Moser
patent: 2004/0233670 (2004-11-01), Linde
patent: 2007/0064415 (2007-03-01), Wood

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