Electromagnetically controlled shutter

Details Electromagnetically controlled shutter Electromagnetically controlled shutter

1982-12-28

1984-12-11

Hix, L. T.

354246, G03B 908, G03B 940

Patent

active

044874928

ABSTRACT:
An electromagnetically controlled shutter with a latch member held in an active position by an electromagnet containing a permanent magnet and operating upon de-magnetization of the electromagnet to release the shutter. To prevent reduction of the attractive force by the adhesion of dust, oil or the like to the attracting surface of the electromagnet and also to improve the ramping characteristics of the shutter, an arrangement is provided such that when the electromagnet is de-energized, the shutter latching member is pulled away from the electromagnet by a breakaway spring. Then the breakaway spring impels the shutter to run down in an early stage, and loses its impelling force. Soon after that, the shutter latching member is returned to the attracted position by an attracting spring.

REFERENCES:
patent: 3646869 (1972-03-01), Arai
patent: 4160983 (1979-07-01), Inagaki et al.

Affiliated with

Also associated with

Rating

Electromagnetically controlled 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 Electromagnetically controlled shutter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetically controlled shutter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1460559