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. 31, 1993
Filed:
Jul. 16, 1992
Masayoshi Onishi, Sakai, JP;
Takeshi Takahashi, Yamatotakada, JP;
Koyo Seiko Co., Ltd., Osaka, JP;
Abstract
A dynamic pressure bearing device has a bearing and a shaft which is partly accommodated in the bearing. A sliding surface of the bearing is provided with dynamic pressure grooves of circular shape. When the direction of relative movement between the shaft and the bearing is reversed, fluid within the dynamic pressure grooves can move its flowing direction change along the circular dynamic pressure grooves. Further, the dynamic pressure grooves, being of circular shape, can generate dynamic pressures of equal levels irrespective of the direction of the movement.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile