U.S. patents available from 1976 to present.
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...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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Class 237/77 - Foot warmer


Subclass of Class 237 - Heating systems
Definition: Radiators with special features for warming the feet.
No. of patents: 3
Last issue date: 01/13/2004


NumberTitleIssue Date
6676028Electrical resistance foot warmer for use with a motor vehicle
A portable foot warming device for use with a vehicle. The device includes a rubberized, heat transferring and electrically insulating pad having a specified three dimensional shape with a specified length, width and thickness. An electrically conductive ...
01/13/2004
5605642Flexible foot warming device for a snowmobile
A foot warmer having a water-proof, flexible rubberized layer to protect the user from electrical shock, for installation on a surface such as a running board of a snowmobile, snow removal, excavation or other motorized outdoor equipment. A foot warmer ha...
02/25/1997
3948246Heater for sports benches
The invention concerns heaters, particularly for sports benches and more especially for the benches on which substitute players of the team sit during games. In the preferred form, a self-contained heater such as a combustion operated construction heater ...
04/06/1976
 
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