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:
Mar. 04, 2003
Filed:
Feb. 13, 2002
Masanori Tsubouchi, Wako, JP;
Tatsuya Kuroda, Wako, JP;
Haruo Tsusaka, Wako, JP;
Masaki Tsunoda, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A compact and lightweight outboard engine ( ) mounted to a boat stern by a mounting device having a tilt shaft comprises: an engine ( ) including a flywheel ( ) positioned at a lower end portion of a vertically extending crankshaft, and an oil pan positioned below the flywheel ( ). An upper wall of a flywheel chamber ( ) accommodating the flywheel is made up of a bottom wall of a crank chamber made of a crankcase ( ), etc., and a bottom wall ( ) of the crankcase ( ) forming a front portion of the engine body ( ) has a return oil path formed forward of an inner circumferential wall surface ( ) of a circumferential wall ( ) of the flywheel chamber ( ) and having inflow openings ( ) through which lubricant oil flows from the crank chamber. Such outboard engine prevents output loss by preventing or minimizing lubricant oil staying in the crank chamber while the engine is driven in a tilt-up condition.