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. 10, 1976
Filed:
Aug. 21, 1974
H William Voigt, Jr, Stanhope, NJ (US);
Lawrence W Pell, West Orange, NJ (US);
Jean P Picard, Morristown, NJ (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
Black powder pills of excellent ignition properties are obtained by a simfied process, wherein an aqueous solution of KNO.sub.3 is introduced into an alcoholic medium, such as ethanol, in the presence of finely divided particles of sulfur and wood charcoal and/or carbon black and a small amount of a polyvinyl pyrrolidone, whereby the KNO.sub.3 is precipitated in finely divided form in intimate mixture with the particles of sulfur and carbon. The resulting particulate mixture contains an extremely thin surface film of adsorbed polyvinyl pyrrolidone, and is separated from the liquid and dried. The modified black powder thus obtained can be safely handled in the dry state and compressed into pills possessing ignition properties equivalent to standard black powder granules. The novel process provides excellent particle size control and reproducibility and eliminates time consuming, hazardous steps and special apparatus used in the conventional commercial black powder process.