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 |
| 4975205 | Apparatus and method for receiving, draining and disposing of dredged material A dump truck has a tiltable dump body with a tailgate at its rear end. A partition or weir mounted in the dump body and of lesser height than the walls of the dump body divides the dump body into front and rear compartments. A siphon is connected between ... | 12/04/1990 |
| 4883321 | Combination rear dump and bottom dump semi trailer The present invention relates to a new type of trailer for trucks used in the construction industry. The invention discloses a combination bottom dump and end dump trailer in a single unit. The trailer generally comprises a cargo area, a bottom dump hatch... | 11/28/1989 |
