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:
Nov. 08, 1977
Filed:
Apr. 07, 1976
Applicant:
Inventor:
William F Donovan, Aberdeen, MD (US);
Assignee:
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Primary Examiner:
Int. Cl.
CPC ...
F41F / ;
U.S. Cl.
CPC ...
89-8 ; 89 / ;
Abstract
A gun having a piston accelerated by a first charge and a projectile moun to and accelerated relative to the piston by a powder charge on said piston ignited by a firing pin pneumatically actuated by the gases of the first charge. The gases of the first charge travel a convuluted path of decreasing cross-section.