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. 01, 2009
Filed:
Sep. 01, 2004
Applicants:
Fuminori Satoji, Kuwana, JP;
Ryouichi Nakajima, Kuwana, JP;
Kenji Ito, Kuwana, JP;
Inventors:
Assignee:
NTN Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 32/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
While applying an ultrasonic vibration to a housingand/or a bearing sleeve, the outer peripheral surfaceof the bearing sleeveis press-fitted into the inner peripheral surfaceof the housingwith a predetermined interference, and is welded thereto. During the press-fitting, the region of the inner peripheral surfaceof the housingcoming into contact with the bearing sleeveis melted or softened by the action of the ultrasonic vibration, so that, as compared with a case in which only press-fitting is conducted, the requisite press-fitting force at the time of press-fitting can be substantially reduced.