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:
Oct. 28, 2025

Filed:

Mar. 26, 2024
Applicant:

Honda Motor Co., Ltd., Tokyo, JP;

Inventors:

Toru Kisaichi, Tokyo, JP;

Hirokazu Tanaka, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 57/031 (2012.01); F16H 57/02 (2012.01);
U.S. Cl.
CPC ...
F16H 57/031 (2013.01); F16H 2057/0203 (2013.01); F16H 2057/02065 (2013.01);
Abstract

A crank case structure that can reduce a front-rear dimension of the crank case to reduce the size of a power unit. A crank case structure adapted to a crank case () that houses a crankshaft (C) of a power unit (P), including a crank case cover () attached to a side surface of the crank case (), a push rod () that is disposed parallel to the crankshaft (C) and reciprocates to disengage a clutch (CL), and a clutch drive unit () that reciprocates the push rod (). A through hole (), through which the push rod () passes, is formed within an area of a sealing surface (), the sealing surface () is formed in the crank case () to attach to the crank case cover (), and the clutch drive unit () is attached to the crank case cover ().


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