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:
May. 17, 1983
Filed:
Nov. 06, 1981
LeRoy Stansbury, Jr, Aberdeen, MD (US);
William F Donovan, Aberdeen, MD (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
A primer device has a coupling device for efficiently dispersing the ignin products from a primary propellant into a main charge. The coupling device has a housing with a central chamber. This chamber has an inlet and outlet port. The housing and its inlet port are sealed over a cavity containing a primary propellant. A valve device is mounted at the inlet port for initially sealing combustion gasses from the primary propellant within the cavity. This initial interval during which the cavity is sealed, fosters thorough burning of the primary propellant. When combustion causes pressure sufficient to open the valve device, combustion products enter the central chamber of the housing. These combustion products bear upon a frangible seal, which is mounted at the outlet port of the housing. The frangible seal ruptures at a predetermined and repeatable pressure. As a result, the combustion gasses from the primary propellant are expelled from the housing at a high pressure and at a time when a great percentage of the primary propellant has been burned. As a result an energetic flame exits from the housing, efficiently and thoroughly igniting the main charge.