Title:
【発明の名称】デジタル遅延装置
Document Type and Number:
Japanese Patent JP2845348
Kind Code:
B2
Abstract:
An extended delay detonator (blasting cap) provides a preselected, electronically controlled delay between an incoming non-electric impulse input signal from, e.g., a shock tube or other input transmission line, and detonation of the output charge of the detonator. The delay detonator has a housing closed at one end and open at the other end for coupling to the input transmission line, the signal from which may be amplified by a booster charge mounted within the housing. A piezoelectric generator converts the optionally amplified impulse input signal to electrical output energy. A battery-powered programmable electric delay circuit is activated by the electrical output from the transducer, counts the preselected delay period, and at the end thereof ignites an electrically operable output charge. A method for interposing a preselected delay between the application of a non-electric impulse input signal and the detonation of the output charge is also provided.
Inventors:
ROODO KENESU EI
PARANKU ROBAATO JII
DOOMAN MAAKU DEI
MIKUNA RICHAADO JEI
PARANKU ROBAATO JII
DOOMAN MAAKU DEI
MIKUNA RICHAADO JEI
Application Number:
JP51531994A
Publication Date:
January 13, 1999
Filing Date:
December 17, 1993
Export Citation:
Assignee:
ENSAIN BITSUKUFUOODO CO ZA
International Classes:
F42B3/12; F42B3/16; F42C11/06; F42C11/02; F42C15/31; F42D1/045; F42D1/05; (IPC1-7): F42C11/06
Attorney, Agent or Firm:
Heiyoshi Odashima