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 |
| 7377405 | Vacuum relief device Liquid soap dispensers including a vacuum relief valve which comprises an enclosed chamber having an air inlet open to the atmosphere and a liquid inlet in communication with liquid in the reservoir and in which the liquid inlet opens to the chamber at a height belo... | 05/27/2008 |
| 7198175 | Manual or pump assist fluid dispenser Liquid soap dispensers including a vacuum relief valve which comprises an enclosed chamber having an air inlet open to the atmosphere and a liquid inlet in communication with liquid in the reservoir and in which the liquid inlet opens to the chamber at a height belo... | 04/03/2007 |
| 6957751 | Vacuum relief device Liquid soap dispensers including a vacuum relief valve which comprises an enclosed chamber having an air inlet open to the atmosphere and a liquid inlet in communication with liquid in the reservoir and in which the liquid inlet opens to the chamber at a height belo... | 10/25/2005 |
| 4113437 | Liquid storage device The liquid storage device comprises a rotary heat-insulated jacket mounted on a stationary base to rotate about a vertical axis. The jacket is formed to carry a plurality of inverted liquid containing vials, situated at least partially within the jacket, ... | 09/12/1978 |
