Industry Patents
Patent: 4210955
Shutter System for Stage-Lighting Spotlights
(Click image for PDF of full patent)
| Patent Number: |
4210955 |
| Title: |
Shutter System for Stage-Lighting Spotlights |
| 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.
|
| Country of Issue: |
US |
| First Named Inventor: |
Labrum |
| Assignee: |
Electro Controls |
| Continuation or Divisional of: |
|
| International Classification: |
F21V 17/02 |
| US Classification: |
362/321 |
| Issue Date: |
07-01-1980 |
| Filing Date: |
09-20-1978 |
| Application : |
944084 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
4210955 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
4210955 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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