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:
May. 23, 1989

Filed:

Oct. 08, 1987
Applicant:
Inventors:

Tokuji Yoshimoto, Wako, JP;

Takashi Inagaki, Kawagoe, JP;

Michio Ookubo, Kamifukuoka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
123 9031 ; 123 9027 ;
Abstract

A cam shaft driving device for an engine which is adapted to operably associate a cam gear located on a cam shaft of an upper portion of an engine body with a driving gear on a crank shaft of a lower portion of the engine body, with this association being effected through the intermediary of a cam idling gear. In this device, first and second wall portions, mutually displaced along the axis of crank shaft rotation of the engine and projecting outwardly and laterally from both sides of the engine body, provide a receiving space. This receiving space is provided between adjacent cylinders in the engine body and is larger in laterally extending width than a diameter of the cylinders, with this width extending laterally of the cylinders and transversely of the axis of rotation of the crank shaft. A single gear holder is located in said receiving space, with this gear holder being mounted on at least one of the wall portions. The cam idling gear is rotatably supported and received on a side surface of the single gear holder. A shock absorbing, swingable boss/bearing arrangement may be provided for supporting the idling gear so as to control back lash phenomena.


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