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:
Mar. 14, 1989
Filed:
Jul. 21, 1987
Applicant:
Inventor:
Sui Takayama, Hiratsuka, JP;
Assignees:
Nippon Gear Co., Ltd., both of, JP;
Atsugi Machinery Co., Ltd., both of, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74 8915 ; 411438 ; 7442 / ; 74458 ;
Abstract
A motion conversion mechanism comprising a threaded shaft and a nut, is disclosed. The nut comprises a cylindrical body having the inner surface thereof formed with a groove corresponding to the thread of the threaded shaft. A string having a low friction property surface is fitted in the groove such that it partly projects from the inner peripheral surface of the cylindrical body. The projecting portion of the string constitutes a thread to be screwed with the thread of the threaded shaft.