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. 19, 1991
Filed:
Feb. 20, 1987
Applicant:
Inventors:
George A Kemeny, Wilkins Township, Allegheny County, PA (US);
Dennis Pavlik, Murrysville, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F41B / ;
U.S. Cl.
CPC ...
89-8 ; 124-3 ; 2001 / ;
Abstract
An electromagnetic launcher having spaced-apart rails for launching a projectile by means of a current-carrying armature between the rails includes a breech end loop connected to a current commutating firing switch. A low resistance shorted loop is positioned in proximity to the breech loop and generates a current in a direction counter to the commutated breech current. The arrangement reduces the equivalent breech inductance which in turn reduces communication arcing energy as well as the duration of arcing, thereby prolonging firing switch life.