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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 172/727 - With attached runner or depth gauge


Subclass of Class 172 - Earth working
Definition: Apparatus including a member separate from the earth-working
No. of patents: 1
Last issue date: 12/01/1987


NumberTitleIssue Date
4709492Pushing apparatus, and methods of constructing and utilizing same
A device for back scraping snow, earth, or other like substances which generally includes a truck having a concave snowplow blade mounted on its front. The blade has shoes provided on its backside, wedge shaped hinged connections mounted on the shoes, and...
12/01/1987
 
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