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:
Feb. 11, 2003

Filed:

Jul. 30, 2001
Applicant:
Inventors:

Duane R. Bookshar, Highland Heights, OH (US);

John A. Borries, Chardon, OH (US);

Daniel Bogert, Wickliffe, OH (US);

Assignee:

The Stanley Works, New Britain, CT (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 7/00 ;
U.S. Cl.
CPC ...
E21B 7/00 ;
Abstract

A method of controlling electric- and fluid-powered torque-applying tools to avoid torque overshoot and unwanted joint stresses. During a fastening operation, a controller monitors the peak torque applied to a joint at specified intervals in time and adjusts the speed of the tool appropriately to reach a programmed torque value without overshooting. The method may be applied to arbitrary types of joints and allows the tool to adapt to the characteristics of a joint while a fastening operation is underway, without a separate “learning” or “adaptation” phase.


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