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:
May. 02, 2006
Filed:
Mar. 22, 2004
Alain Pyre, Saint Just, FR;
Gilles Frechon, Val David, FR;
Pascal Coudrier, Bueil, FR;
Ange-marie Guillemin, Vernon, FR;
Christian Roure, Vernon, FR;
Alain Pyre, Saint Just, FR;
Gilles Frechon, Val David, FR;
Pascal Coudrier, Bueil, FR;
Ange-Marie Guillemin, Vernon, FR;
Christian Roure, Vernon, FR;
Snecma Moteurs, Paris, FR;
Abstract
The invention provides an electronic wrench which includes means for measuring the instantaneous applied torque and means for measuring the instantaneous angle of rotation during tightening. The physical parameters of the screw connection for tightening and a setpoint value for the tightening are initially entered into the wrench via a keypad. During the tightening operation, the processor means calculate the instantaneous traction force on the screw fastener as a function of the measured instantaneous values of torque and angle and as a function of the recorded characteristics of the screw fastener.