The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 1998
Filed:
Nov. 25, 1996
David Jared Asplund, Lockport, NY (US);
David Michael Ebbing, Clarence Center, NY (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A piston (40) for use in a compressor housing (10) having a cylindrical inner surface (12) with an anti rotation wing (42) of improved design. The outer surface of the piston anti rotation wing (42) includes a pair of spaced, semi cylindrical pads (48), each with a radius substantially equal to the compressor housing inner surface (12). Each pad (48) is located on the anti rotation wing (42) such that, when the winG (42) is centered, the inner edge of each pad (48) is radially spaced slightly from the housing inner surface (12), and each pad is eccentric relative to the center of the compressor housing surface (12). When the anti rotation wing (42) turns in either direction, one pad (48) or the other contacts the housing inner surface (12) concentrically, making continuous supporting contact.