Shutter lock for specialized lighting fixtures

Details Shutter lock for specialized lighting fixtures Shutter lock for specialized lighting fixtures

2006-09-19

2006-09-19

Husar, Stephen F (Department: 2875)

Illumination

Light modifier

Adjustable or positionable

C362S281000, C362S283000, C362S322000, C362S323000

Reexamination Certificate

active

07108401

ABSTRACT:
A specialized lighting fixture, such as a framing projector provided with a plurality of adjustable framing shutters, is modified to incorporate a pair of locking rings, surrounding the body of the lighting fixture and positioned on opposite sides of outwardly projecting portions of the framing shutters. After initial adjustment of the framing shutters has been completed, the locking rings are tightly compressed together, as by locking screws positioned between adjacent pairs of framing shutters, to lock the shutters in position against unintended dislodgment. For lighting fixtures of non-uniform shape, the locking rings may be made in two parts, preferably hinged together, which are secured together after being positioned on the housing of the lighting fixture. The locking rings are particularly adapted for retrofit installation on lighting fixtures of existing design.

REFERENCES:
patent: 4210955 (1980-07-01), Labrum
patent: 2002/0060911 (2002-05-01), Brockmann et al.

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