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:
Apr. 09, 2002
Filed:
May. 19, 2000
Umemitsu Kobayashi, Kuwana, JP;
NTN Corporation, Osaka-fu, JP;
Abstract
The bearing according to the invention is an ultra thin type rolling bearing in which the ratio of a ball diameter/a pitch circle diameter is 0.03 or less, and includes an outer member, an inner member, and balls inserted between these members. A double row raceway surface is provided at the inner circumferential surface of the outer member. The inner member includes an annular member and an engaging member engaged to the outer circumference of the annular member and having an axial clearance to the annular member, and raceway surfaces are provided at the outer circumferential surfaces of the annular member and engaging member. Preloading is performed by pressurizing the engaging member and reducing the axial clearance. Thus, the number of parts is reduced and the manufacturing cost is reduced accordingly.