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.:

US 7093980 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 22, 2006

Filed:

Mar. 22, 2004
Applicant:

Akira Iijima, Fujisawa, JP;

Inventor:

Akira Iijima, Fujisawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 35/00 (2006.01); F01L 1/053 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention is directed to a bearing structure for a camshaft to prevent obliquely wiping off the oil from the surface of the camshaft caused by a knife edge. A lower journal () for supporting the camshaft () is formed with a counterbore () cutting off a part of a bearing surface () of the lower journal (). A connecting part between the bearing surface () and the counterbore () is formed with a recess () hollowed from the bearing surface (). A part of an edge () connecting the recess () to the bearing surface () is elongated along a perpendicular direction to an axis of the bearing surface (O), and a remaining part of the edge () is elongated along a parallel direction to the axis (O). The part of the edge () does not wipe off the oil in the axis direction (O), while the oil wiped by the remaining part of the edge () is received into the recess () and is used for lubrication.


Find Patent Forward Citations

Iijima, Akira. (2006). Bearing structure for camshaft (U.S. Patent No. 7093980). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7093980

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