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. 12, 2024
Filed:
Apr. 02, 2019
Atlas Copco Industrial Technique Ab, Stockholm, SE;
Daniel Per Erik Asplund, Huddinge, SE;
John Robert Christian Friberg, Nacka, SE;
ATLAS COPCO INDUSTRIAL TECHNIQUE AB, Stockholm, SE;
Abstract
A hand held electric pulse tool performs tightening operations in which torque is delivered in pulses to tighten a screw joint. The tool includes an output shaft and a sensor to determine a parameter value associated with tightening of the screw joint. The tool is operative to provide torque pulses on the output shaft in a tightening direction until a first parameter value associated with the tightening of the screw joint is reached, then pause the tightening during a first time interval, and then provide torque pulses on the output shaft in a loosening direction until a second parameter value is reached. Next the electrical pulse tool is operative to pause the tightening during a second time interval and provide torque pulses on the output shaft in the tightening direction until a third parameter value is reached.