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. 28, 1992
Filed:
Oct. 11, 1990
Janusz Figiel, Mount Prospect, IL (US);
Peter Drabarek, Chicago, IL (US);
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
A method and apparatus for tensioning a strap loop around an object and terminating the tensioning of the strap loop at a predetermined loop tension. The object is encircled with a loop of strapping having a predetermined thickness, width, and coefficient of friction. A leading end portion of the strap is restrained while disposing a trailing end portion of the strap adjacent a traction wheel that is rotatable about a first axis at a predetermined maximum available torque. A pressing member that is pivotable about a second axis oriented parallel to the first axis and that has a predetermined configuration and coefficient of friction is biased toward the traction wheel so as to press the strap trailing end portion against the traction wheel. The traction wheel is rotated about the first axis so as to grip the strap and slide the strap along the pressing member for tensioning the strap loop while permitting the sliding friction force imposed upon the pressing member to pivot the pressing member further toward the traction wheel so as to further compress the strap between the traction wheel and pressing member so as to increase the sliding friction resistance force imposed upon the strap and thereby overcome the tangential force imposed upon the strap by means of the traction wheel at the maximum available torque so as to terminate the traction wheel rotation at the predetermined loop tension.