Camera shutter cocking mechanism

Details Camera shutter cocking mechanism Camera shutter cocking mechanism

1986-02-10

1987-07-21

Mathews, A. A.

354204, 354214, G03B 1742

Patent

active

046814167

ABSTRACT:
A camera shutter cocking system employs a specially configured cam driven synchronously with a film-engaging sprocket to actuate a shutter cocking lever from a released to a shutter cocking condition by means of a cam follower mounted on the cocking lever. The cam preferably has two lobes, each configured to maintain the shutter cocking load on an electric motor drive system generally constant throughout substantially the entire film advancing operation. Excessive terminal overspeed of the motor drive system is thereby suppressed. A one-way clutch between the cam and the sprocket disengages the shutter cocking system from the motor drive during rewind and traps the cocking lever in a released position, thus preventing multiple double exposure of the film if the shutter release button is accidentally held down by the user during this operation.

REFERENCES:
patent: 4005461 (1977-01-01), Lange
patent: 4383747 (1983-05-01), Tezuka
patent: 4416525 (1983-11-01), Chan
patent: 4522477 (1985-01-01), Iwashita et al.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-203696