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:
Jan. 05, 1999
Filed:
Jun. 18, 1996
Aldo Arena, Smithtown, NY (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
A method which is directed to the fabricating or forming of tubular members of the torque tube type which may be utilized as torque joints for the drive shafts or steering connections of motor vehicles or in connection with articulating linkages for high-lift aircraft systems, marine systems or for other various military or non-military commercial physical application where it is intended to react to torsional and axial loads which are ordinarily encountered in torque joints, steering linkages, drive shafts and the like. More particularly, pursuant to a further aspect, provision is made for a device which is in the form of a novel die arrangement for electromagnetically forming spirally oriented grooves in tubular members and therewith interposed end fittings, particularly of the type which are adapted to react to intense torsional and axial loads encountered by torque joints and the like, and which are designed to appreciably reduce or even essentially eliminate stress concentrations so as to improve upon the fatigue life and, resultingly, extend the service life or durability of the torque tube assembly.