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Class 137/505.17 - Weight


Subclass of Class 137 - Fluid handling
Definition: Devices in which the means comprises a weight varied in
No. of patents: 1
Last issue date: 09/24/1991


NumberTitleIssue Date
5050240Air cushion helmet support and ventilation system with air pressure regulator
An air cushioned safety and/or display helmet. A thin cushion of air between the wearer's head and the inside of the helmet supports the helmet and distributes the helmet's weight evenly thus preventing development of pressure points and corresponding wea... 		09/24/1991
 
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