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:
Jan. 11, 1983
Filed:
Jan. 30, 1981
George G Lassanske, Oconomowoc, WI (US);
Outboard Marine Corporation, Waukegan, IL (US);
Abstract
An internal combustion engine is illustrated having an engine block, a cylinder located in the engine block, and a cylinder head defining an end wall of the cylinder. A piston is housed in the cylinder and defines with the cylinder and the cylinder head a combustion space adapted to receive a mixture of fuel and air therein. The piston is reciprocably movable toward the cylinder head to compress a fuel mixture in the cylinder and movable away from the cylinder head, the piston engaging one side of the cylinder as the piston moves toward the cylinder and engaging an opposite side of the cylinder as the piston moves away from the cylinder head. The piston includes an annular groove, and the piston ring is housed in the annular groove, the piston ring including opposite ends being spaced apart and forming a gap. The piston ring is positioned with the gap adjacent that side of the cylinder engaged by the piston as the piston moves away from the cylinder head such that the gap provides for pressure release from the combustion chamber during movement of the piston toward the cylinder head.