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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 181/154 - Inclined diaphragm


Subclass of Class 181 - Acoustics
Definition: Subject matter wherein the means to support the diaphragm
No. of applications: 2
Last issue date: 12/01/2005


Application No.Application TitleIssue Date
20050263341Adjustable Speaker Mount
The Adjustable Speaker Mount is a two-piece adjustable speaker mounting device, consisting of a speaker mounting ring and a housing. The speaker mounting ring fits inside the housing in a fashion that allows it to be swiveled so the speaker can be aimed to improve sound...
12/01/2005
20050236224Microphone assembly fitted to vehicle-mounted control module panel, that fits well
A microphone assembly fitted to a panel of a vehicle-mounted control module, provided with a housing for housing a microphone and having an opening section on a surface facing the panel, and a holding case for holding the housing so as to be capable of pivoting, and whe...
10/27/2005
 
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