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:
Nov. 06, 1979
Filed:
Apr. 11, 1978
Applicant:
Inventors:
Hiroshi Hashimoto, Nishikasugai, JP;
Kinya Mori, Nishikasugai, JP;
Assignee:
Sanyo Machine Works, Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ; B25B / ;
U.S. Cl.
CPC ...
29240 ; 81 5 / ; 81 525 ;
Abstract
There are disclosed a method and device for tightening bolts, characterized by including drive means, detection means and control means whereby a bolt (or nut) is turned at high speed until it comes in contact with the tightening bearing surface of a member to be clamped (such as a plate), whereupon it is turned at low speed through a predetermined angle until it is stopped at a predetermined tightening completion position.