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. 14, 1998
Filed:
May. 20, 1996
Ronald W Batten, Torrance, CA (US);
Fairchild Holding Corporation, Chantilly, VA (US);
Abstract
There is disclosed a method for the assembly of an aerospace fastener system of a torque limiting, frangible collar nut and pin in a non-interference fit application wherein the pin develops increased frictional resistance to rotation with increased torque loading applied to the fastener. In the method, the nut is run up on the pin while rotation of the pin is retarded by a key which has a limited rotational movement and which is restrained against rotation by a resilient spring force. The method is practiced with an improved L-head for a rotationally driven tool in which the key holder of the L-head has a limited degree of rotational moveability which is resilient restrained by a spring link which includes a cable which is passed about a stationary drum to provide a dampening of the spring force. The invention greatly extends the useful life of keys as the torsional loads transmitted to the keys are held within safe limits.