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:
May. 04, 1976
Filed:
Feb. 24, 1975
Applicant:
Inventors:
Assignee:
Dornier System GmbH, , DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; C25F / ;
U.S. Cl.
CPC ...
20412965 ; 156-8 ;
Abstract
This invention relates to a process for producing helical oil grooves in a spherical metallic body, for example for a spiral groove bearing, which comprises exposing a photographic lacquer on the surface of said body to light under a pattern, developing the resulting image, and electrochemically etching and then chemically etching grooves in said body in the non-image areas, whereby pressure-building spiral grooves are produced having a planar groove bottom, straight walls, sharply right-angled edges, and a depth in the range of about 1 to 20 microns.
Quick Actions:
Hepp, Wolfgang. (1976). Process for producing grooves in metallic bodies (U.S. Patent No. 3954582). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3954582
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile