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 |
| 4601761 | Nozzle for self-contained cutting torches A self contained jet perforator torch (10) for defining large holes (H) in workpiece (W) such as a large bomb, includes a plurality of ports (68) fluidically connecting a combustion chamber with a slot-like chamber (62). The ports and the slot-like chambe... | 07/22/1986 |
| 4084078 | Jet perforator device A device for perforating or cutting a target made of metal or other materials by means of a plasma jet. The device includes a cast grain of plasma producing pyrotechnic material that is coated over a major portion of its exterior surface with a combustion... | 04/11/1978 |
