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.

Date of Patent:
May. 28, 2013

Filed:

Mar. 13, 2009
Applicants:

Shinobu Kobayashi, Tochigi, JP;

Tetsuo Ishii, Tochigi, JP;

Inventors:

Shinobu Kobayashi, Tochigi, JP;

Tetsuo Ishii, Tochigi, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B 13/48 (2006.01); B25B 13/00 (2006.01); B25B 23/00 (2006.01); B25B 9/00 (2006.01); B25B 17/00 (2006.01); B25B 13/50 (2006.01); B23Q 17/00 (2006.01); B23Q 7/10 (2006.01); B23P 11/00 (2006.01); B23P 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A tightening head () is provided with at least two sockets () which are alternatively connected to an output shaft of a nut runner (), a socket replacing mechanism () and a bolt supplying mechanism (). The socket replacing mechanism () is provided with a moving mechanism () and a posture changing mechanism (). The moving mechanism () moves each socket () between a using position where the socket () agrees with an axis of the output shaft of the nut runner () and a waiting position which is distant from the axis. The posture changing mechanism () changes a posture of each socket () to an upward posture corresponding to the waiting position and to a tightening posture corresponding to the using position. The bolt supplying mechanismis provided with bolt magazines () and bolt holding mechanism (). During a bolt tightening step is executed by one socket in the using position, the bolt (B) is supplied to the other socket in the waiting position.


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