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:
May. 17, 2005
Filed:
Jul. 27, 2004
Noriyuki Natsume, Shizuoka, JP;
Kazumasa Tanimoto, Shizuoka, JP;
Noriyuki Natsume, Shizuoka, JP;
Kazumasa Tanimoto, Shizuoka, JP;
Abstract
A marine propulsion unit has a driveshaft and propulsion shaft driven by the driveshaft and driving a propeller. The driveshaft carries a pinion. The propulsion shaft carries forward and reverse gears. The pinion meshes with the forward and reverse gears. The pinion drives the forward and reverse gears in opposite directions relative to each other. A sleeve is rotatable with the propulsion shaft. The sleeve is slidably disposed between the forward and reverse gears on the propulsion shaft. The forward and reverse gears have teeth on a surface thereof that opposes the sleeve. The sleeve has recesses on each surface thereof that opposes the forward or reverse gear. Each tooth can enter a corresponding recess. The tooth has a length substantially the same as a length of the recess in a circumferential direction.