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. 04, 1986
Filed:
Apr. 23, 1985
John A Borries, Chardon, OH (US);
Earl E Rush, Mentor, OH (US);
William S Washeim, Seven Hills, OH (US);
The Rotor Tool Company, Cleveland, OH (US);
Abstract
A portable air tool for applying torque to a workpiece includes a built in strain gauge transducer for measuring applied torque and a built in potentiometer adjustment mechanism for balancing or calibrating the transducer in unloaded condition. The transducer and potentiometer adjustment mechanism are electrically connected by leads passing from the tool to an electrical circuit containing the power supply and a millivolt meter or computer. To balance the transducer in unloaded condition, the end of a screwdriver or other tool may be inserted through a housing aperture and into the air tool to turn an adjustment screw on the enclosed potentiometer until the millivolt meter reads zero indicating balance in the transducer circuit. Alternatively, the potentiometer could be mounted in a threaded sleeve forming the handle of the tool, with adjustment access to the potentiometer being provided when the handle is unthreaded and axially moved relative to the tool to expose the potentiometer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile