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:
Mar. 17, 1992
Filed:
Aug. 28, 1990
Applicant:
Inventor:
Graham A Reynolds, Coventry, GB;
Assignee:
Rolls-Royce Business Ventures Limited, Derby, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F41B / ;
U.S. Cl.
CPC ...
89-8 ; 89 1405 ; 124-3 ;
Abstract
A rail gun assembly (10) having rail electrodes (11, 12) which are of toothed cross-section configuration and an armature (15) which provides an electrical interconnection between the rail electrodes (11,12). The armature (15) is made up of three electrically conductive portions (24,25,26) which are separated by insulators (27,28). The electrically conductive armature portions (24,25,26) are so configured that varying amounts of electrical current pass through them as the armature is operationally accelerated along the gap between the rail electrodes (11,12). Localized overheating of the armature (15) is therefore substantially reduced.