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:
Jun. 22, 1982
Filed:
Sep. 02, 1980
Sven-Erik Bratt, Karlskoga, SE;
Aktiebolaget Bofors, Bofors, SE;
Abstract
The invention comprises an electric igniter comprising a filament (9), a priming charge ignitable by heat generated in the filament by feeding an electric current therethrough, two connection legs (8, 8') for connecting the feed wires (7, 7') to the igniter and the filament and a high frequency filter to protect the igniter against accidental ignition by electromagnetic fields or static electricity. The casing of the igniter comprises a wider part (2), the 'cup', and a narrower part (3) in which narrower part (3) and the connection legs (8, 8') are cast in a material (10) which withstands pressure and high temperatures. The igniter has a simple mechanical design using capacitor and ferrite elements (11, 12) as the high frequency filter which elements are common for the two connection legs. The ferrite element (12) is located in the narrower part (3) of the igniter so that the element together with the material (10) serves as a bushing for the two connection legs.