Shutter system for stage-lighting spotlights

Details Shutter system for stage-lighting spotlights Shutter system for stage-lighting spotlights

1978-09-20

1980-07-01

Tudor, Harold J.

Illumination

Light modifier

Adjustable or positionable

362264, F21V 1702

Patent

active

042109558

ABSTRACT:
A shutter system for stage-lighting spotlights includes a housing having a fixed framing gate therein which has an opening therethrough for the passage of light. Two sets of opposing shutter blades are sandwiched, one on each side of the framing gate, between the framing gate and one of a pair of pressure plates which have means urging them toward the framing gate. Each shutter blade has a neck portion which extends through a slot in the housing and which serves as a handle to which pressure may be applied to move the shutter blade. The blades are normally held in place by the action of the pressure plates against the blades and framing gate.

REFERENCES:
patent: 2076240 (1937-04-01), Levy
patent: 2623934 (1952-12-01), DeBow et al.
patent: 2950382 (1960-08-01), Hatch
patent: 3116022 (1963-12-01), Davis
patent: 3307028 (1967-02-01), Bentham
patent: 3571588 (1971-03-01), Hilzen
patent: 3639751 (1972-02-01), Pichel

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