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:
Jul. 11, 1989
Filed:
Feb. 01, 1988
David L DeMartelaere, Romeo, MI (US);
Craig B Lindquist, Goodrich, MI (US);
Kent-Moore Corporation, Warren, MI (US);
Abstract
Apparatus for precision tensioning of threaded fasteners and the like comprising a drive head having a shaft for applying turning torque to a threaded fastener, a strain gage mounted on the drive shaft for providing a torque signal as a function of torque applied to the fastener, and an optical encoder for providing an angle signal as a function of angle of rotation of the fastener. An electronics package includes a microprocessor-based controller, an alphanumeric display for displaying either torque or angle as well as additional operating mode information, and a membrane switch panel for operator selection of angle-monitoring mode, torque-monitoring mode, measurement or setup operating modes, torque display in Newton-meters or foot-pounds, and for programming desired torque and/or angle thresholds into the control microprocessor.