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:
Jan. 19, 1982
Filed:
May. 05, 1980
Gerald L Oswald, New Ringgold, PA (US);
Atlas Powder Company, Dallas, TX (US);
Abstract
An electronic blasting cap (10) includes a housing (12) which is closed at one end and has adjacent thereto it a base charge (14), a primer charge (16) and an ignition charge (18). The charges (14, 16, 18) are positioned within housing (12) by a metal capsule (20). An electric match assembly (26) is positioned within an insulated spacer (24) within housing (12). An electronic module (32) comprising an electronic delay circuit (90) fixed within a potting compound is positioned within housing (12). A sealing plug (38) closes housing (12) by means of crimps (40, 42). An input signal is received over leg wires (34, 36) for storing an electric charge within circuit 90 which fires the electric match assembly 26 following a preset time delay.