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:
Apr. 24, 2012
Filed:
Jan. 29, 2009
Naoto Shiga, Saitama, JP;
Naoto Shiga, Saitama, JP;
Tamron Co., Ltd., Saitama-shi, JP;
Abstract
An object of the present invention is to provide a sliding device that can surely reduce damage caused by mutual sliding behavior. To achieve the object, a sliding device in which a screw bolt having a male thread and a nut having a female thread hole in which a female thread is formed on an inner circumference are screwed together in a state capable of screw rotation and applied with repeating screw rotation so that the male thread and the female thread are subjected to a sliding load, wherein when Vickers hardness of a first metal material constituting the male thread of the screw bolt is H, and Vickers hardness of a second metal material constituting the female thread on the inner circumference of the female thread hole in the nut is H, |H−H|=300 HV0.1 to 350 HV0.1 is employed.