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:
Jul. 24, 2007
Filed:
Oct. 22, 2003
Hiroshi Fujii, Aichi, JP;
Katsuhiro Sugiyama, Motosu, JP;
Masashi Mitsukuchi, Konan, JP;
Kenichi Katayama, Ogaki, JP;
Yoshinori Moriguchi, Kakamigahara, JP;
Hiroshi Fujii, Aichi, JP;
Katsuhiro Sugiyama, Motosu, JP;
Masashi Mitsukuchi, Konan, JP;
Kenichi Katayama, Ogaki, JP;
Yoshinori Moriguchi, Kakamigahara, JP;
Kabushiki Kaisha Imasen Denki Seisakusho, Inuyama-shi, Aichi, JP;
Nagoya Industrial Science Research Institute, Nagoya-shi, Aichi, JP;
Abstract
A flat portionand a slope portionare provided on a threadof a multi-pitch screwalternately. The flat portion and the slope portion are provided on the thread of a multi-pitch nut which fastens with this. Consequently, a screw and a nut capable of preventing loosening securely by step are achieved. This enables comfortable and quick feeding and when a torque from a driving source is interrupted, step-like self-lock is activated.