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:
Sep. 29, 1998
Filed:
Aug. 22, 1996
Hayato Ohmi, Kanagawa, JP;
Hideo Ouchi, Kanagawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
A rolling bearing unit having a rotating speed detector includes an outer race, an inner race, a cover made of synthetic resin, a sleeve made cylindrically of metal, and a seal ring fitted between the cover and the outer race, in which a first leaking passage exists between a first clearance formed on an engaging surface between the sleeve and the outer race and a third clearance formed between the outer race and the cover, the first and the third clearances being arranged in series to each other, and a second leaking passage exists between the third clearance and a second clearance formed in a contact portion of the sleeve with the cover, the third and the second clearances being arranged in series to each other. The single seal ring is capable of preventing the entrance of muddy water into the cover and the outer race through the first and the second clearance.