Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7321208 | Driving apparatus A driving apparatus for driving a functional body mounted on a vehicle comprises a power supply, an electric motor, and a driving means. The electric motor is connected to the power supply and is started by a power feed from the power supply. The driving means has a... | 01/22/2008 |
| 7143664 | Electromotive servo drive An electromotive servo drive includes a drive motor, a drive train, which is fitted with an output member and includes at least one gear stage for reducing the rotation speed of the motor, and a rotatable hand-operated adjusting shaft for adjusting the output member... | 12/05/2006 |
| 7066301 | Linear actuator having manual override and locking mechanism A manual override mechanism is presented for a motor-driven linear actuator that allows the output rack and pinion of the actuator to be manually positioned. Once positioned, the output may be locked by a locking mechanism to prevent this output from translating to ... | 06/27/2006 |
| 6851533 | Spring brake actuator A spring brake actuator is mounted with its shaft connected to the rotational operative shaft of a service brake actuator. The spring brake actuator has a clock spring, which is mechanically charged at a rotation of the actuator shaft in a brake release direction. I... | 02/08/2005 |
| 6805227 | Electromotive servo drive An electromotive servo drive includes a drive motor having an external rotor and a drive train in driving relationship with the drive motor and having an output member operatively connected to a control element to be adjusted. A locking device having a brake element... | 10/19/2004 |
| 6725976 | Manual override and locking mechanism and actuator including same A manual override mechanism is presented for a motor driven rotary actuator that allows the output of the actuator to be manually positioned. Once positioned, the output of the actuator may be locked by a locking mechanism to prevent this output from rotating to its... | 04/27/2004 |
| 6308587 | Actuator for vehicle-door locking mechanism An actuator for vehicle-door locking mechanism, includes a driving motor, a first deceleration mechanism for decelerating a rotation of the driving motor, a lead screw to which the rotation of the driving motor is transmitted through the first deceleratio... | 10/30/2001 |
| 6032760 | Bi-directional spring holder assembly for an actuator An actuator for power door locks having a bi-directional spring holder assembly. The assembly has a substantially cylindrical housing having a projection formed on a rim of its cylindrical wall. The projection is provided with first and second abutments f... | 03/07/2000 |
| 5986369 | Actuator having piezoelectric braking element An electromechanical actuator maintains an external device to which the actuator is connected at an operating position when power is applied to the actuator, and allows the external device to return to a default position when the power is removed. Include... | 11/16/1999 |
| 4333489 | Spring-motor dual-functioning mechanism For releasing and resetting a releasable and resettable device: a spring-motor dual-functioning mechanism comprising release means to release the device, a spring motor to reset the device, and spring-winding means to rewind the spring motor, the spring m... | 06/08/1982 |
| 4287428 | Automatic spring powered battery charging device A battery charging device which is driven by a torsional spring. A gear train driven by the spring is coupled with a wheel having peripheral teeth. A control lever is reciprocated pivotally by a small spring to engage the teeth of the wheel in a manner to... | 09/01/1981 |
| 4211401 | Swing having electrically rewound spring motor drive A child's electric swing includes a pre-wound wind-up mechanical escapement type motor having spring-biased retainer and driving pawls, the latter being connected to a pivotally mounted hanger supporting the swing seat. The pawls engage a mainspring-drive... | 07/08/1980 |
| 4153828 | Stored-energy operating means for an electric circuit breaker This operating means comprises a circuit-breaker closing spring, a rotatable spring-controller mounted for rotation between first and second dead-center positions with respect to said spring, and means for transmitting charging forces to the spring in res... | 05/08/1979 |
| 4137436 | Means for manually slow-closing a circuit breaker that has a spring-actuated operating device An operating device for an electric circuit breaker comprises a closing spring and a rotatable spring-controller mounted for rotation between first and second dead-center positions with respect to the spring. The spring is charged by transmitting rotation... | 01/30/1979 |
| 4131842 | Automatic spring-powered battery charging device A battery charging mechanism which is driven by a coil spring. A gear train driven by the spring includes a wheel having peripheral teeth. A control lever is reciprocated pivotally by a small spring to engage the teeth of the wheel in a manner to control ... | 12/26/1978 |
| 4005843 | Hanging display rotator A rotator for a hanging display such as a mobile, hanging plant or the like having a self-contained power supply. The apparatus comprises a cylinder for containing flashlight batteries adjacent one another and for containing motor means to drive a geared ... | 02/01/1977 |
