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:
Aug. 20, 1996
Filed:
Oct. 28, 1994
Applicant:
Inventor:
Ho-Chul Lee, Seoul, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon, KR;
Primary Examiner:
Int. Cl.
CPC ...
B21H / ;
U.S. Cl.
CPC ...
72 75 ;
Abstract
A helical groove for conducting lubricant is formed in an internal cylindrical surface of a bearing member by pressing a plurality of balls against the surface while effecting relative longitudinal and rotational movement between the bearing member and a ball-carrier which carries the balls. The balls roll along the cylindrical surface and press-form the helical groove therein. To enable the ball carrier to be inserted into the bearing, the balls are held in a retracted state by applying a vacuum to the balls.