Illumination – Light modifier – Adjustable or positionable
Reexamination Certificate
2005-09-06
2005-09-06
Husar, Stephen (Department: 2875)
Illumination
Light modifier
Adjustable or positionable
C362S277000, C362S283000, C362S284000, C362S321000
Reexamination Certificate
active
06939026
ABSTRACT:
A shutter section includes a stack of circular plates independently rotatable in a nest formed as a laminar formation of rings. The plates have central openings defining a light path. Four central plates in the stack are shutter guide plates with radial guide slots slideably holding shutter blades. Two outer pairs of plates are shutter drive plates connected by cams to the shutter blades. Simultaneous rotation of a shutter guide plate and associated shutter drive plate causes rotation of an associated shutter blade around the light path. Rotation of a shutter drive plate while the associated shutter guide plate is stationary causes the cam to move the associated shutter blade radially. The nest is enclosed by end plates. A motor section has motors driving pinions to rotate the circular plates. The circular plates, rings pinions and shutter blades are made of sheet metal.
REFERENCES:
patent: 2625087 (1953-01-01), Steineck
patent: 4208100 (1980-06-01), Bischl
patent: 4210955 (1980-07-01), Labrum
patent: 4395104 (1983-07-01), Lange
patent: 4811182 (1989-03-01), Solomon
patent: 5264885 (1993-11-01), Haraguchi et al.
patent: 5510969 (1996-04-01), Rodger et al.
patent: 5571280 (1996-11-01), Lehrer
patent: 5653519 (1997-08-01), Dobbs
patent: 6092914 (2000-07-01), Esakoff et al.
patent: 6102554 (2000-08-01), Wynne Willson et al.
patent: 6550939 (2003-04-01), Reinert
patent: 6744693 (2004-06-01), Brockmann et al.
patent: 6837596 (2005-01-01), Tanaka et al.
Gennrich David James
Roberts Sheldon
Electronic Theatre Controls, Inc.
Greer Burns & Crain Ltd.
Han Jason
Husar Stephen
Kolehmainen Philip M.
LandOfFree
Shutter assembly for a luminaire does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Shutter assembly for a luminaire, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shutter assembly for a luminaire will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3436282