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:
Apr. 09, 1985
Filed:
Aug. 13, 1982
Stanley P Desjardins, Tempe, AZ (US);
James C Warrick, Tempe, AZ (US);
Simula Inc., Tempe, AZ (US);
Abstract
An inversion tube energy absorber, that absorbs energy by inverting a tube, is made to be capable of infinitely variable loading within a prescribed range by addition of a constricting device surrounding the inverted tube where it emerges from its housing. In this device, spherical balls in contact with the tube can be forced inwardly in radial directions by incline surfaces inside a rotatable ring surrounding the balls. This ring can be rotated as desired by turning a dial that is connected to the ring by a flexible shaft via gear systems. The invention also includes the method for making a variable-load energy absorber by addition of a device that creates additional force through plastic deformation in a selective manner in the basic device.