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.

Date of Patent:
Jan. 02, 1990

Filed:

Dec. 20, 1988
Applicant:
Inventors:

Katsuhiko Ohno, Tokyo, JP;

Keisuke Ishii, Tokyo, JP;

Motoaki Etoh, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01P / ;
U.S. Cl.
CPC ...
123 417 ; 123 4165 ; 1231 / ;
Abstract

An engine of forced air cooled type which is provided with a cooling fan fixedly mounted on an end of a crankshaft within a blower housing of the fan, and which has a plurality of meshed gears. The crankcase constitutes the lower part of the outer structure of the engine to enclose the gears and has a double-wall construction with cooling air passages thus formed therein in at least the part thereof enclosing the gears. The cooling air passages have upstream ends communicating with the delivery outlet of the blower housing and downstream ends positioned to direct cooling air against and along the outer surface of the crankcase.


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Ohno, Katsuhiko. (1990). Crankcase of an engine (U.S. Patent No. 4890583). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4890583

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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