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:
Aug. 31, 2004
Filed:
Sep. 11, 2003
Applicant:
Inventors:
Calvin T. Candland, Eden Prairie, MN (US);
Dipak S. Kamdar, Maple Grove, MN (US);
Rollie H. Dohrn, Cottage Grove, MN (US);
Assignee:
Alliant Techsystems Inc., Edina, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F42B 1/316 ; F42B 1/100 ;
U.S. Cl.
CPC ...
F42B 1/316 ; F42B 1/100 ;
Abstract
An obturator having redundant surfaces for sealing between a projectile and a gun tube, where the obturator has at least one gun tube side cannelure. At least one projectile side cannelure is located opposite to the at least one gun tube side cannelure, where the at least one gun tube side cannelure is conformed to seal around the projectile. A tail protrudes from a rearward end of the at least one gun tube side cannelure, where the tail makes an interference fit with the smooth gun bore to make a low pressure seal.