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Class 396/455 - Having pneumatic or electromagnetic braking or damping


Subclass of Class 396 - Photography
Definition: Subject matter wherein a force to slow the speed is generated
No. of patents: 8
Last issue date: 05/30/2006


NumberTitleIssue Date
7053514Image apparatus and drive motor
A drive motor is proposed, which serves as a drive source for a movement mechanism constituting an iris for an optical path of an imaging system. The drive motor has a shaft serving as a center of rotation, a magnet, two-pole magnetized and rotated around the shaft,...
05/30/2006
6491450Shutter for a camera
To prevent rebounding motion of sectors caused in stopping the sectors and achieve small-sized formation of a shutter, there is provided a shutter for a camera including sectors for opening and closing a shutter opening by reciprocal and pivotal movement,...
12/10/2002
5781816Electromagnetic device for providing a hard stop for moving blade aperture systems
An hard stop is disclosed for use with an aperture mechanism that has at least one blade moveable along a path between a closed position and at least one open position, and at least one hard stop piston that is moveable between a first position, out of th...
07/14/1998
5262812Blades actuation device for light path
Actuation device of the invention is used for opening and closing blades for defining light path, i.e. a diaphragm of a camera. The actuation device includes an axle with a permanent magnet, a frame for rotationally receiving the permanent magnet, a hollo...
11/16/1993
5121148Single lens reflex camera
A camera 14 has a shutter 42 that is reciprocally movable by a motor 54 that is in positive engagement with the shutter 42. The motor 54 provides harmonic motion to the shutter 42 between its open and closed positions. A second motor 78 advances the film ...
06/09/1992
4669841Rotary shutter
A rotary shutter adapted to be used in an electronic still camera comprises a rotatable shutter having shutter openings which are variable in size. The shutter is rotated by an electric motor in order to open and close intermittently an exposure aperture ...
06/02/1987
4312583Electromagnetically driven shutter device
An electromagnetic device for driving a shutter includes a moving coil which is arranged to rotate in the magnetic field of a stator. A current supply arrangement for supplying exciting current to the moving coil includes a pair of insulated side pieces f...
01/26/1982
4302090Antibounce device for electromagnetically driven shutter
An antibounce device for an electromagnetically driven shutter of a camera in which a braking current flowing in the direction reverse to the direction of a driving current is supplied to a shutter blade driving coil for a predetermined period of time imm...
11/24/1981
 
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