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:
Dec. 09, 1997
Filed:
Mar. 21, 1996
Applicant:
Inventor:
Shingo Kono, Iwata, JP;
Assignee:
NTN Corporation, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
464128 ; 464136 ;
Abstract
The annular contact surface (1b1) of the bottom portion of an outer ring is formed with an uneven pattern comprising a number of projections (A) (regions A1, A2, A3) and recesses (regions B1, B2). Each projection (A) is a substantially Y-shaped region having a given level above the bottom surface of the regions (B1, B2). The regions (A1) and (A2), forming the Y's heads of the projection (A), lead to the outer diameter of the annular contact surface (1b1), while the region (A3) forming the Y's leg leads to the inner diameter of the annular contact surface (1b1).