Industry Patents
Patent: 6550939
Light Beam Shutter Apparatus
(Click image for PDF of full patent)
| Patent Number: |
6550939 |
| Title: |
Light Beam Shutter Apparatus |
| Abstract: |
A light beam shutter apparatus for a lighting instrument includes several
individual shutter mechanisms arranged radially around the axis of a light
beam. Each shutter mechanism includes a generally circular shutter blade
having a circumference, but with a cut-out or void area such that a
portion of the circumference is eliminated. The shutter blade preferably
includes at least one straight edge at the boundary of the cut-out or void
area, which straight edge passes through the center around which the
shutter blade rotates, and is used for intercepting at least a portion of
a light beam passing through the light beam shutter apparatus. The shutter
blade may alternatively include other edge shapes at the boundary of the
cut-out or void area, as desired. Driven surfaces, such as gear teeth or
the like, are formed in opposed portions of the remaining circumference.
The shutter blade is mechanically coupled to linear driving members, such
as rack gears or the like, which are driven in turn by rotary driving
members, such as pinions or the like. The rotary driving members may be
driven by motors. Linear-actuating motors may also be used to drive the
linear driving members in place of rotary motors and rotary driving
members. The shutter mechanism assembly, comprising the several similar
shutter mechanisms, may be rotated through a limited range, as desired.
|
| Country of Issue: |
US |
| First Named Inventor: |
Reinert |
| Assignee: |
Vari-Lite |
| Continuation or Divisional of: |
|
| International Classification: |
F21V 17/02 |
| US Classification: |
362/321 |
| Issue Date: |
04-22-2003 |
| Filing Date: |
09-12-2001 |
| Application : |
09953537 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6550939 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6550939 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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