Motor driven shutter

Details Motor driven shutter Motor driven shutter

1990-05-11

1991-09-03

Adams, Russell E.

G03B 908

Patent

active

050458736

ABSTRACT:
A mechanism for opening and closing a shutter includes a rotatably mounted drive member, a motor operable to rotatably drive the drive member, an actuator for opening and closing the shutter when the drive member is rotated, and an operating arrangement between the drive member and the actuator operable to provide a gear driving operating relationship between the drive member and the actuator during one part rotation of the drive member and a non-driving relationship during another part rotation of the drive member.

REFERENCES:
patent: 2347699 (1944-05-01), Magnus et al.

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