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:
Nov. 28, 1989
Filed:
Apr. 07, 1987
John H Winston, Menomonee Falls, WI (US);
Outboard Marine Corporation, Waukegan, IL (US);
Abstract
A piston assembly comprising a piston reciprocally movable along an axis and including a generally cylindrical outer surface having therein a circumferentially extending groove partially defined by a surface having therein a recess, and a piston ring located in the groove and including a lower surface extending generally perpendicularly to the axis, a first arcuate segment having an upper surface inclined radially inwardly and downwardly and having a maximum thickness and a radially inwardly decreasing thickness, and a second arcuate segment extending into the recess and having a substantially constant thickness across the radial extent thereof, the constant thickness being substantially equal to the maximum thickness.