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. 20, 1996
Filed:
May. 26, 1995
Jack A Erickson, Andover, MN (US);
Robert L Kramer, Minneapolis, MN (US);
John M Hallis, Buffalo, MN (US);
Federal-Hoffman, Inc., Anoke, MN (US);
Abstract
An improved non-toxic primer which is devoid of metallic oxidizing compounds and of hygroscopic compounds and is comprised of 30-75% by weight of at least two percussion-sensitive compounds selected from a group consisting of a diazo, a triazole, and a tetrazole compound mixed with approximately 10-30% by weight of a suitable propellant, and a frictionator comprised preferably of approximately 12% by weight of calcium silicide and 8% by weight of fine particles of glass. The glass preferably has a particle size of dimensions less than 0.0021'. The primer provides improved propellant ignition, non-toxic ignition products, improved ballistic data, and greatly minimizes misfires.