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.:
Date of Patent:
Jan. 26, 1993
Filed:
Jun. 20, 1991
Applicant:
Inventors:
Assignee:
NGK Spark Plug Co., Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251315 ; 428141 ; 428167 ; 428179 ; 428409 ; 428410 ; 428426 ; 428457 ; 428472 ; 251368 ; 137237 ;
Abstract
A mechanical part has a contact surface for movement on a mating surface. The contact surface is first rough ground by using a grinding wheel of a grain size, for example, equal to or smaller than #200 and then barrel finished or buffed so as to have such a profile that is roughness spacing ranges from 5 to 100 .mu.m and more than half of its peaks are smoothly rounded.
Taniguchi, Masato. (1993). Mechanical part made of ceramics (U.S. Patent No. 5181691). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5181691
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile