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. 23, 1996
Filed:
Sep. 27, 1994
Applicant:
Inventor:
Martin Corney, Glendora, CA (US);
Assignee:
Hughes Missile Systems Company, Los Angeles, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
F42B / ;
U.S. Cl.
CPC ...
102472 ; 1022021 ; 1022022 ; 102210 ;
Abstract
A system (10) for detonating an electro-explosive device (EED) (46) includes a primer (40, 70) connected to an expansion chamber (36) by a shaped vent passage (38). A releasably retained element (60) within the expansion chamber (36) is propelled by expanding gas from the detonated primer to impact a piezoelectric crystal (48) in circuit with the EED (46). Particular safety arrangements are disclosed which prevent the application of voltage from the crystal to the EED until the system is intentionally activated. Some of these arrangements also prevent electromagnetic interference and stray field voltages from reaching the EED.