Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7356426 | Calibration of thermal sensors for semiconductor dies A thermal management system is described which may be implemented on a semiconductor die. The system may include a thermal sensor thermally coupled to the die to sense the temperature of the die and generate an output representing the sensed temperature, and an adju... | 04/08/2008 |
| 6837441 | Thermostat with clock-burst control of trip point The present invention is directed at a thermostat using a clock burst to control a temperature trip point without the use of an external resistor. A clock burst is applied to a clock input pin from which a counter is used to count the number of pulses. The output of... | 01/04/2005 |
| 6510699 | Displacement control apparatus for variable displacement compressor A displacement control apparatus is used for a variable displacement compressor. The compressor is driven by an internal combustion engine. The compressor has an inclining swash plate and a piston, which is reciprocated by the swash plate. The stroke of t... | 01/28/2003 |
| 6223993 | Climate control device A climate control system is provided including a vacuum pump for generating a vacuum upon actuation. Also included is a thermostat for generating the activation signal upon a current temperature within the associated room being out of a predetermined rang... | 05/01/2001 |
| 4346838 | Timed rate pneumatic control A timed rate control applies to a system having a device 12 for varying a medium 14, a sensor 13 for detecting variation in the medium, and a pneumatic line 11 for varying the device 12 in response to the sensor. This includes many pneumatic control syste... | 08/31/1982 |
| 4315521 | Fluid pressure signal controller A fluid pressure and electrical signal controller for providing a predetermined regulated vacuum signal from a variable source in response to changes in position of a rotatable input shaft when attached thereto and an electrical signal at a predetermined ... | 02/16/1982 |
