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 |
| 3937477 | Mechanical seal system A sealing system for a rotatable shaft positioned in a passage extending through a housing where both static and dynamic sealing are achieved to prevent fluid leakage along the shaft from the liquid side to the air side of the seal. The system includes a ... | 02/10/1976 |
