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. 24, 1981
Filed:
Jun. 18, 1979
Rudolf Herrgen, Wermelskirchen, DE;
Werkzeug-Union GmbH-DWU, , DE;
Abstract
The present invention is directed to a torque wrench wherein a head comprises an engaging member capable of being coupled, antirotationally, with a screw or the like. A handle lever is movable within limits relative to the engaging member and a load sensor is provided between the engaging member and the handle lever and controls an indicating means. The load sensor according to the present invention is a piezoelectric member fitted with electrodes connected with the input of an electric amplifier which is fed by a battery housed in the handle lever. The electric amplifier controls an electronic indicator which indicates the torque applied to a screw or the like.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile