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:
Oct. 22, 1991
Filed:
Jan. 28, 1991
James M Grayson, Pewaukee, WI (US);
Thomas L Barnhardt, Menomonee Falls, WI (US);
Briggs & Stratton Corporation, Wauwatosa, WI (US);
Abstract
An improved rocker box cover assembly for an overhead valve, horizontal crankshaft, internal combustion engine. The cover assembly is a pre-assembled unit attached to the cylinder head and includes an inner cover section, which defines a rocker arm chamber, and an outer cover section with the space between the sections defining an oil separating chamber. The inner cover section is provided with an opening that provides communication between the chambers and a check valve is mounted in the opening. A gas outlet is located in the upper portion of the oil separating chamber while a drain opening is located in the lower end of the separating chamber and separated oil drains through the drain opening and is returned to the crankcase.