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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 4420162 B1

PDFFull Text
Date of Patent:
Dec. 13, 1983

Filed:

Nov. 03, 1981

Mechanical seal and method of forming a sliding surface thereof

Applicant:
Inventors:

Tadamasa Yanai, Takahashi, JP;

Risaburo Sagehashi, Souja, JP;

Yoshio Kameyama, Souja, JP;

Takao Shimomura, Souja, JP;

Assignee:

Eagle Industry Co., Ltd., Tokyo, JP;

Attorney:

Jordan and Hamburg

Primary Examiner:

Robert I Smith

Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277 961 ; 277134 ;
Abstract

A mechanical seal has a predetermined number of fine grooves formed on a sliding surface thereof, both ends of the fine grooves respectively reaching the outer peripheral end and the inner peripheral end of the sliding surface, part of the fine grooves being inclined forwardly and the remainder inclined rearwardly with respect to the relative rotational direction of the sliding surface. With those fine grooves it is intended to improve the sealing effect and the lubricating effect of the sliding surface. Also provided is a method of forming such a sliding surface.

Find Patent Forward Citations

Yanai, Tadamasa. (1983). Mechanical seal and method of forming a sliding surface thereof (U.S. Patent No. 4420162). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4420162

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

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