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:
Feb. 11, 2003
Filed:
Aug. 14, 2001
Frederick Alexander Jackson, Diep Rivier, ZA;
John Hofmeyr Godsiff, Fish Hoek, ZA;
Denel (Proprietary) Limited, Erasmuskloof, ZA;
Abstract
A cartridge assembly includes a shell containing a propellant charge At a rear, open end, the shell holds a force amplifying initiating device in turn holding a rim fire primer in operative association with the propellant A firing pin body is movably held within the device to expose a rear of the body to a shock wave to initiate the device A fore end of the body includes a taper formation having a rounded fore point aligned with an inactive surface of the primer centrally within a firing rim. Inadvertent (mechanical) actuation of the firing pin will fall to cause sufficient and sufficiently fast impingement on the primer to initiate the primer. Only a shock wave can cause initiation. The primer is held in a collar allowing it to flare open upon initiation and holding it within the shell after initiation.