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:
May. 24, 1983
Filed:
Feb. 02, 1981
Applicant:
Inventors:
Bruce P Burns, Churchville, MD (US);
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 ...
F42B / ;
U.S. Cl.
CPC ...
102525 ; 102520 ; 102703 ;
Abstract
A wedge-shaped seal for sealing against leakage of gun gases past a projele in the bore of a gun barrel includes a wedge-shaped tip having rearward angled forward and rear surfaces which is preloaded to bear the tip against the projectile body. A wedge-shaped region between the lip and the projectile body is partly collapsed by the pressure of gun gases on the rear surface of the lip to improve the seal. A similar seal may be provided with the bore of the gun barrel.