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Class Information
Number: 396/469
Name: Photography > Camera detail > Shutter > Dynamo-electric actuator > Plural dynamo-electric actuators
Description: Subject matter having more than one means to convert electrical energy to mechanical energy by means of an electromagnet to cause the shutter to actuate.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7614806 |
Damping system for mechanical shutter |
Nov. 10, 2009 |
| 7583312 |
Exposure control of image input apparatus |
Sep. 1, 2009 |
| 7396169 |
Light quantity adjusting device and photographing device having the same |
Jul. 8, 2008 |
| 7374353 |
Light control apparatus and optical apparatus |
May. 20, 2008 |
| 7367722 |
Front and rear curtain shutter device with start area |
May. 6, 2008 |
| 7104708 |
Sector drive unit for camera |
Sep. 12, 2006 |
| 6749348 |
Focal-plane shutter for digital still camera |
Jun. 15, 2004 |
| 6565270 |
Light quantity controller and camera system including the same |
May. 20, 2003 |
| 6550986 |
Light quantity controller |
Apr. 22, 2003 |
| 6382848 |
Shutter for camera |
May. 7, 2002 |
| 6336752 |
Dual motor reciprocating belt shutter |
Jan. 8, 2002 |
| 6033131 |
Hybrid silicon-based micro-electromagnetic light shutter |
Mar. 7, 2000 |
| 6000860 |
Method for controlling a focal-plane shutter having two motors |
Dec. 14, 1999 |
| 5969444 |
Stepping motor and taking lens barrel for camera incorporating said stepping motor |
Oct. 19, 1999 |
| 5970268 |
Shutter device of camera having a light blocking member with a variable starting position |
Oct. 19, 1999 |
| 5953550 |
Shutter device of camera |
Sep. 14, 1999 |
| 5828920 |
Translational electromagnetic camera shutter for variable aperture applications |
Oct. 27, 1998 |
| 5802415 |
Dual coil actuator |
Sep. 1, 1998 |
| 5706120 |
Device for controlling an amount of light allowed to reach a photosensitive surface |
Jan. 6, 1998 |
| 5333025 |
Rotating magnet focal plane shutter usable in a camera and having an improved device for holding the shutter in a closed position |
Jul. 26, 1994 |
| 4839679 |
Dual voice coil shutter |
Jun. 13, 1989 |
| 4664494 |
Electronic focal plane shutter |
May. 12, 1987 |
| 4643553 |
Electro-magnetically driven shutter |
Feb. 17, 1987 |
| 4596453 |
Electromagnetic drive device for shutter |
Jun. 24, 1986 |
| 4417797 |
Variable force electromagnetic shutter |
Nov. 29, 1983 |
| 4375915 |
Shutter time control camera |
Mar. 8, 1983 |
| 4373797 |
Electromagnetically driven shutter |
Feb. 15, 1983 |
| 4367938 |
Electromagnetically driven shutter |
Jan. 11, 1983 |
| 4339190 |
Electromagnetically driven focal plane shutter |
Jul. 13, 1982 |
| 4338013 |
Electromagnetically driven shutter |
Jul. 6, 1982 |
| 4334749 |
Camera having an electromagnetically driven shutter |
Jun. 15, 1982 |
| 4333721 |
Electromagnetically driven shutter |
Jun. 8, 1982 |
| 4303326 |
Electromagnetically driven shutter device for camera |
Dec. 1, 1981 |
| 4290682 |
Electromagnetically operated shutter |
Sep. 22, 1981 |
| 4213689 |
Electromagnetically actuated shutter mechanism for cameras |
Jul. 22, 1980 |
| 4149794 |
Motor-driven shutter mechanism |
Apr. 17, 1979 |
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