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:
Jun. 02, 1992
Filed:
Apr. 16, 1991
Mike Navarette, Ft. Worth, TX (US);
Jerry L Walker, Ft. Worth, TX (US);
Jet Research Center, Inc., Alvarado, TX (US);
Abstract
An apparatus attenuates a shock, such as an impact load from an explosion, by undergoing plastic deformation and by serially dissipating energy from a plurality of surfaces. In a particular embodiment, the plastic deformation and serial energy dissipation occur in and from a hollow unitary body having a cylindrical wall in which are defined a plurality of longitudinally spaced circumferential grooves. A method of attenuating shock from an explosion in an oil gas well comprises: lowering into the well an explosive connected to a shock attenuating member; detonating the explosive whereby an impact load with a shock wave is generated; and collapsing without severing the member in response to the impact load and dissipating energy of the shock wave from a plurality of surfaces of the member so that the shock wave is attenuated along the member.