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US 4,380,381 AGranted
Camera with motor driven winding-up device
AssigneeCanon Kabushiki Kaisha
InventorNobuo Tezuka
Life of this patent
Estimating the term…
Abstract
A movable member in a camera is arranged to start moving in response to termination of a shutter operation. By way of this movable member, a clutch mechanism for transmitting driving torque of an electric motor to a film winding-up mechanism is rendered operative, and a control switch for the motor is also changed over. This initiates a film winding-up operation by the motor after the exposure has been completed.
Claims10
A motor driven winding-up device for a camera with a shutter including:
- (a) an electric motor;
- (b) a spool arranged to be driven by said motor for winding up film in the camera;
- (c) clutch means for transmitting driving torque of said motor to said spool so that said spool is driven to rotate when said clutch means is actuated, said clutch means being placed in a non-actuated state when a film is wound up by a length of one frame;
- (d) switching means for controlling a supply of current to said motor when said switching means is actuated, said switching means being placed in a non-actuated state corresponding to completion of energizing the shutter;
- (e) an actuating member for selectively actuating said clutch means and said switching means by shifting in a prescribed direction;
- and
- (f) a latch member engageable with said actuating member, and arranged to be disengaged from said actuating member when operation of the shutter is completed, for initiating shifting of said actuating member.
4 more elements
A motor driven winding-up device for a camera including:
- (a) an electric motor;
- (b) a spool arranged to be driven by said motor for winding up film in the camera;
- (c) clutch means for transmitting driving torque of said motor to said spool so that said spool is driven to rotate when said clutch means is actuated;
- (d) switching means for controlling a supply of current to said motor when said switching means is actuated;
- (e) an actuating member for selectively actuating said clutch means and said switching means;
- (f) a latch member for latching said actuating member, said latch member being arranged to be disengaged from said actuating member when an exposure operation of the camera is terminated;
- (g) a release member operating in response to actuation of a camera release operation;
- and
- (h) a lock member arranged to be engageable with said release member for preventing movement of said release member, said lock member being arranged to be disengaged from said release member as said actuating member engages said latch member.
6 more elements
A motor driven winding-up device for a camera including:
- (a) an electric motor;
- (b) a spool arranged to be driven by said motor for winding up film in the camera;
- (c) clutch means for transmitting driving torque of said motor to said spool so that said spool is driven to rotate when said clutch means is actuated;
- (d) switching means for controlling a supply of current to said motor when said switching means is actuated;
- (e) a first actuating member for actuating said switching means;
- (f) a first latch member for latching said first actuating member;
- (g) a second actuating member responsive to release of said first actuating member and said first latch member from engagement with each other, for actuating said clutch means in a direction toward a transmitting state;
- (h) a rewind control member for releasing said first latch member and said first actuating member from engagement with each other;
- and
- (i) a third actuating member cooperative with said rewind control member for latching said second actuating member.
7 more elements
Dependencies are inferred from the claim text.