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.

Date of Patent:
Jan. 30, 1979

Filed:

Jul. 18, 1977
Applicant:
Inventor:

Steven E Fowler, Ridgecrest, CA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F42C / ;
U.S. Cl.
CPC ...
102220 ; 102206 ;
Abstract

An electric detonator is fired by energy stored in the circuit upon arming f the system. A bridgewire grounds the trigger signal until sufficient input is present to blow out the bridgewire. The trigger signal then passes through a time delay circuit which gates a silicon controlled rectifier. This permits a closed circuit loop between the detonator and the stored energy.


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