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:
Jul. 31, 1990
Filed:
Apr. 06, 1989
Mohamed A Hilal, Madison, WI (US);
General Dynamics Corporation, Convair Division, San Diego, CA (US);
Abstract
A rail gun utilizing a combination of chemical energy for propelling a piston and a projectile. The piston movement creates electromagnetic energy in rails which further increases the velocity of the projectile as it leaves the gun barrel. In operation, propellants are introduced into the gun and ignited. High pressure gas produced from the combustion accelerates the piston and the projectile along the rails. An external field normal to the piston is applied from a dipole magnet wound around the gun bore. The piston movement induces emf thus charging the rails which act as an inductor. The current flowing in the rails further increases the velocity of the projectile along the barrel to its final exit velocity.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile