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:
Sep. 07, 2004
Filed:
May. 15, 2003
Yuichi Kawamoto, Akashi, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Abstract
A dry-sump lubrication type four-stroke cycle engine having a crankcase provided with a crankshaft chamber in its front part and a transmission chamber in its rear part, a generator chamber on one side of the crankcase in an axial direction of the crankshaft, and a clutch chamber on the other side of the crankcase. The crankshaft chamber and the transmission chamber are separated by a partition wall of a predetermined height to form an oil reservoir chamber in a lower part of the transmission chamber. An auxiliary oil reservoir chamber is formed in a lower part of the clutch chamber. A suction chamber is formed under a crankshaft chamber bottom wall defining a bottom of the crankshaft chamber so as to communicate with a suction port of a scavenging pump of the engine. The suction chamber opens into the crankshaft chamber through a first suction hole formed in the crankshaft chamber bottom wall and opens into the generator chamber through a second suction hole formed in a wall defining the bottom of the generator chamber. The scavenging pump pumps up oil directly from the suction chamber and discharges oil into the oil reservoir chamber.