Ammunition and explosives – Igniting devices and systems – Ignition or detonation circuit
Patent
1992-09-22
1995-01-03
Lobo, Ian J.
Ammunition and explosives
Igniting devices and systems
Ignition or detonation circuit
102206, F42C 1102
Patent
active
053775929
ABSTRACT:
A digital delay unit for use in blasting operations and the like provides a selected delay between an input impulse signal and an output impulse signal. The delay unit may have a fixed, preset electronically controlled delay period or, optionally, is programmable to enable user-selected changes in an electronically controlled delay lay period. The delay unit has a housing which serves to connect the input and output transmission lines and house the other components, which includes a piezoelectric transducer which converts the input impulse energy, or the energy released by detonation of a booster charge by the input impulse energy, to electrical energy which is used to generate a first electric signal and a second electric signal. An electronic circuit is responsive to the first electric signal to start counting a preprogrammed delay period, after which a second electric signal is emitted to detonate an output charge which ignites one or more output transmission lines, e.g., shock tubes.
REFERENCES:
patent: 3340811 (1967-09-01), Gauld
patent: 3610153 (1971-10-01), Betts
patent: 3741124 (1973-06-01), Visk
patent: 3885501 (1975-05-01), Schneider, Jr.
patent: 3981240 (1976-09-01), Gladden
patent: 3987729 (1976-10-01), Andrews et al.
patent: 3987732 (1976-10-01), Spraggs et al.
patent: 4328751 (1982-05-01), Oswald
patent: 4393779 (1983-07-01), Brede et al.
patent: 4395950 (1983-08-01), Oswald
patent: 4445435 (1984-05-01), Oswald
patent: 4481884 (1984-11-01), Yunan
patent: 4607573 (1986-08-01), Thureson et al.
patent: 4617866 (1986-10-01), Simpson
patent: 4632031 (1986-12-01), Jarrott et al.
patent: 4674047 (1987-06-01), Tyler et al.
patent: 4730556 (1988-03-01), Cobbs
patent: 4742773 (1988-05-01), Bartholomew
patent: 4757764 (1988-07-01), Thureson et al.
patent: 5173569 (1992-12-01), Pallanck et al.
Dorman Mark D.
Michna Richard J.
Pallanck Robert G.
Rode Kenneth A.
Libert Victor E.
Lobo Ian J.
Spaeth Frederick A.
The Ensign-Bickford Company
LandOfFree
Impulse signal delay unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Impulse signal delay unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impulse signal delay unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2203617