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:
Oct. 02, 2012
Filed:
Apr. 28, 2008
Masaharu Hori, Kuwana, JP;
Shigeharu Sumi, Kyoto, JP;
Masaharu Hori, Kuwana, JP;
Shigeharu Sumi, Kyoto, JP;
NTN Corporation, Osaka-shi, JP;
Nidec Corporation, Kyoto-shi, JP;
Abstract
A protrusion () directed axially downwards is provided at a bottom portion () of a housing (), and an outer peripheral surface () of the protrusion () is fixed to an inner peripheral surface () of a bracket (). When a thrust load is applied to the bottom portion () of the housing (), a part of the load is supported by the bracket () via the protrusion (). Thus, a strength of a boundary portion (P) between a side portion () and the bottom portion () of the housing () increases, making it possible to prevent rupture of the boundary portion (P) due to an excessive thrust load. On the other hand, a wall thickness of the bottom portion () can be made invariable, so it is possible to suppress deformation through molding shrinkage of a thrust bearing surface formed on an inner end surface () of the bottom portion ().