Device for driving shutter

Details Device for driving shutter Device for driving shutter

1988-06-03

1990-04-24

Adams, Russell E.

3542341, 3542711, 354484, G03B 7096

Patent

active

049203738

ABSTRACT:
In a device for driving a shutter having a bimorph element displaceable or deformable by the application of a voltage thereto, and so constructed as to open and close the shutter by using the displacing or deforming effect of the bimorph element, the device comprises a first switching means for short-circuiting the bimorph element at a usual time and a second switching means for releasing the bimorph element from the short-circuited state caused by the first switching means only at the time of opening the shutter and at the same time charging the bimorph element with a voltage from an electric source for the bimorph element, so that the shutter can be surely closed at the usual time.

REFERENCES:
patent: 4464039 (1984-08-01), Ishida
patent: 4609275 (1986-09-01), Ishiguro
patent: 4630916 (1986-12-01), Ishiguro

Affiliated with

Also associated with

Rating

Device for driving shutter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for driving shutter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for driving shutter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-36723