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:
Mar. 17, 1987
Filed:
Apr. 05, 1985
Abstract
A secondary coil is provided for use in inductive igniters for the igniting of propellant charge powder. In these igniters, two coil systems cooperate with each other in accordance with the transformer system, wherein the secondary coil is to be as small as possible and is to form a compact unit with the igniter. This is accomplished by arranging the windings of the secondary coil in the form of flat sandwich coils on a support material in an insulated fashion so that upon folding of the support material, the individual flat coils are placed in mutual opposition so that they form a cylinder coil. Furthermore, these flat coils are connected with each other by way of their outermost and innermost windings, the transition from the outermost windings being located at the crease and the innermost windings being joined together so that the flat coils are disposed almost in congruence on the front side as well as on the rear side, and the transition of the innermost coils being effected by a metallized path extending through the carrier material.