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:
Jul. 23, 2019
Filed:
Jul. 27, 2017
Applicant:
Austin Star Detonator Company, Cleveland, OH (US);
Inventors:
Gimtong Teowee, Westlake Village, CA (US);
James D. Heckelman, Norwalk, OH (US);
Assignee:
Austin Star Detonator Company, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F42C 11/06 (2006.01); F42D 1/055 (2006.01); F42C 19/08 (2006.01);
U.S. Cl.
CPC ...
F42C 11/06 (2013.01); F42D 1/055 (2013.01); F42C 19/08 (2013.01);
Abstract
Disclosed examples include firing control electronic circuits, such as electronic ignition modules (EIMs), electronic detonators and firing circuits for blasting applications, in which a Zener diode or one or more general purpose diodes is connected between a firing capacitor and charging voltage source in a circuit with a detonator ignition element to block voltage below a certain desired level so that the firing capacitor is not charged to enhance safety in the logger mode.