U.S. patents available from 1976 to present.
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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 264/315 - Toroidal mold bag


Subclass of Class 264 - Plastic and nonmetallic article shaping or treating: processes
Definition: Processes in which said inflatable element is toroidal in
No. of applications: 5
Last issue date: 08/11/2011


Application No.Application TitleIssue Date
20110193264METHOD OF MAKING AN INVERTED-HOOK GROOVE FOR A PLANT-FIBER MOLDED CUP LID
A method of making an inverted-hook groove for a plant fiber-molded cup lid is to form an inverted-hook groove on a side surface of a plant-fiber molded cup lid, which has already been thermally compressed and shaped, processed and shaped once more to form an inverted-h...
08/11/2011
20090115103TIRE VULCANIZATION METHOD AND TIRE VULCANIZATION APPARATUS
The present invention provides method and apparatus for tire vulcanization which can smoothly separate a bladder from the inner surface of a vulcanized tire by quickly detaching the bladder therefrom to contract it, when separating the bladder from the inner surface of ...
05/07/2009
20080093771Self-releasing curing bladder
This invention relates to an expandable curing bladder for use in curing rubber products; the bladder comprising an inner layer and an outer layer bonded to the first layer;

the inner layer comprising a rubber composition comprised of, base...

04/24/2008
20070063369Method of molding a tire
A method of molding a tire is provided. The method includes the steps of placing a green tire in a mold wherein the mold has internal cavity-defining surfaces, injecting an injection gas into a space defined between an external surface of the green tire and the internal...
03/22/2007
20050112223Self-releasing curing bladder containing a micro-encapsulated lubricant and use thereof to cure rubber products such as tires
This invention relates to an expandable curing bladder of a butyl rubber composition containing a micro-encapsulated polysiloxane lubricant for delivering lubricity to the surface of the bladder. The invention further relates to a process of curing tires with such bladd...
05/26/2005
 
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