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:
Oct. 12, 1993
Filed:
Nov. 30, 1992
Applicant:
Inventor:
Wolfgang Miehling, Muhldorf, DE;
Assignee:
WNC-Nitrochemie GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F42B / ;
U.S. Cl.
CPC ...
86 21 ; 86 2011 ; 86 45 ; 264-33 ; 422163 ;
Abstract
In the production of monobasic propellant charge powders with alcohol and ether as solvents there is the risk of ether bubbles forming in the propellant charge powder material, and those bubbles greatly reduce the quality of the propellant charge powder. The invention provides for cooling the propellant charge powder material prior to its leaving the extruder. To accomplish that, the extruder head (4) is provided with a cooling means. The invention is especially well suited for use in the preparation of monobasic propellant charge powders with alcohol and ether as solvents.