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. 01, 2009
Filed:
Mar. 07, 2005
Takashi Koike, Iwata, JP;
Tomomi Ishikawa, Iwata, JP;
Hiroshi Isobe, Iwata, JP;
NTN Corporation, Osaka, JP;
Abstract
A combined sensor and bearing assembly () is of a type having a capability of detecting a point of origin and includes a rolling bearing unit () and a rotation sensor unit (). The rolling bearing unit () is made up of a rotatable raceway member (), a stationary raceway member () and at least one row of rolling elements (). The rotation sensor unit () includes a to-be-detected member () having a magnet and fitted to one of the raceway members (), and a magnetic detecting member () fitted to the other raceway member () at a location confronting the to-be-detected member (). This combined sensor and bearing assembly () is used at a location close to an electromagnetic coil () emanating a leakage magnetic field, in a condition in which a direction of flow of an electric current through the electromagnetic coil () is fixed in one direction so that a direction of a magnetic flux, with which the magnetic detecting member () is switched off, may coincide with a direction of the leakage magnetic flux.