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. 25, 2012
Filed:
Aug. 22, 2008
Shoji Itomi, Kawana, JP;
Shoji Itomi, Kawana, JP;
NTN Corporation, Osaka, JP;
Abstract
In a rotation sensor unit, a lidis pressed against a housingto push an outer raceof a rolling bearing, thereby applying a preload to the bearingand increasing the rigidity of the bearing, so as to prevent run-out of a shaft. An encoderis supported on this shaft, and a magnetic sensor elementis supported on the lid, which is pressed against the housing. Thus, it is possible to prevent displacement of the magnetic sensor elementand the encoderrelative to each other. The shaft, lidand outer race, etc. are made of a soft magnetic material to define a magnetically shielded space between one axial end surface of the shaftand the lid, with the magnetic sensor elementmounted in the magnetically shielded space.