Shutter device

Details Shutter device Shutter device

1996-12-17

1998-05-05

Mathews, A. A.

Photography

Camera detail

Shutter

396484, 396492, G03B 940

Patent

active

057490147

ABSTRACT:
A shutter device comprises a shutter blade which operates according to an exposure operation, a first blade driving spring for giving an urging force working in a predetermined direction to the shutter blade substantially over an entire operating range of the shutter blade, a second blade driving spring for giving the shutter blade an urging force working in the same direction as the first blade driving spring, and a charging mechanism for charging the first blade driving spring and the second blade driving spring. Since the charging mechanism includes a first charging member which travels to charge the first blade driving spring and a second charging member which travels to charge the second blade driving spring, the timings of charging the respective springs and the torques required to charge the respective springs can be optimally set.

REFERENCES:
patent: 4054891 (1977-10-01), Onda et al.
patent: 4160592 (1979-07-01), Noack et al.
patent: 4245905 (1981-01-01), Takayama
patent: 4334747 (1982-06-01), Shimada et al.
patent: 4487492 (1984-12-01), Toyoda et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-71133