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. 21, 1986

Filed:

Sep. 27, 1985
Applicant:
Inventors:

Takahiro Okuyama, Tokyo, JP;

Susumu Toki, Kawagoe, JP;

Masahito Ishihara, Kani, JP;

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
123 9044 ; 123 9041 ; 123 9039 ;
Abstract

The curved surface of the semi-spherical recess is defined such that a center of the curvature of the semi-spherical recess in a longitudinal section including a center line of the semi-spherical recess deviates from the center line, and a radius of curvature of the recess is greater than a radius of curvature of the spherical fitting portion.


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