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:
Apr. 11, 1995
Filed:
Apr. 29, 1994
Russell J VanRens, Milwaukee, WI (US);
Outboard Marine Corporation, Waukegan, IL (US);
Abstract
Disclosed herein is a four-stroke engine comprising a block having an intermediate portion defining a cylindrical bore having an axis, a head end, and a crankcase end, a head end portion extending from the head end of the intermediate portion in integral one-piece relation thereto and including a planar valve seat surface extending at an acute angle to the axis of the cylindrical bore and having a valve seat with a center and a perimeter defined by a radius extending from the center, and a crankcase end portion extending from the crankcase end of the intermediate portion in integral one-piece relation thereto and including a partially cylindrical portion coaxially aligned with the cylindrical bore, and a recessed portion extending from the partially cylindrical portion and having a peripheral wall spaced at a distance greater than the radius from a line extending perpendicularly to the valve seat surface and from said valve seat center.