Patent US4393779A successfully refreshed from Google Patents.
US4393779A
Expired / Lapsed
US
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Electric detonator element
Assignee: Dynamit Nobel AG
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Filing: 1980-07-23
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Granted: 1983-07-19
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Expires: 2000-07-23
Abstract
Abstract An electrical detonator element including a support formed of an electrically nonconductive material with an ignition resistance and lead electrodes arranged thereon. An electrical circuit for enabling detonation is formed on the support and includes the ignition resistance and at least one electronic component each separately arranged on the support.
Inventors
- 👤 Uwe Brede
- 👤 Horst Penner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:47
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/12; F42B3/121; F42C; F42C11/00; F42C11/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
147 words
An electrical detonator element comprising: a support of an electrically nonconductive material; an electric circuit provided on the support for enabling detonation, the electric circuit including an ignition resistance with lead electrodes connected thereto and at least one electronic component means, the ignition resistance and the at least one electronic component means being electrically connected in the electrical circuit and each being separately arranged on the support; and a mechanically firm insulating member contacting the support so as to at least partially cover the at least one electronic component means, the at least one electronic component means being embedded in the insulating member, the insulating member being provided with a recess in the region of the ignition resistance which exposes at least the ignition resistance, the recess extending through the insulating member and being adapted for receiving a primer charge in operative connection with the ignition resistance.
Claim 2
Dependent Claim
147 words
An electrical detonator element comprising: a support of an electrically nonconductive material; an electric circuit provided on the support for enabling detonation, the electric circuit including an ignition resistance with lead electrodes connected thereto and at least one electronic component means, the ignition resistance and the at least one electronic component means being electrically connected in the electrical circuit and each being separately arranged on the support; and a mechanically firm insulating member contacting the support so as to at least partially cover the at least one electronic component means, the at least one electronic component means being embedded in the insulating member, the insulating member being provided with a recess in the region of the ignition resistance which exposes at least the ignition resistance, the recess extending through the insulating member and being adapted for receiving a primer charge in operative connection with the ignition resistance.
Claim 3
Dependent Claim
38 words
A detonator element according to claim 1, wherein the support is provided with at least one perforation extending therethrough, the perforation having an electrically conductive material therein for enabling connection of the ignition resistance in the electric circuit.
Claim 4
Dependent Claim
25 words
A detonator element according to claim 2, wherein the electric circuit provided on the support is connectible to an external power source for enabling detonation.
Claim 5
Dependent Claim
44 words
A detonator element according to claim 1, wherein the support is formed of a piezoelectric material having piezoelectrically active electrode surfaces located opposite each other, at least one of the electrode surfaces being provided with at least one cutout for arranging the electrical circuit.
Claim 6
Dependent Claim
49 words
A detonator element according to claim 4, wherein the support is provided with at least one perforation extending therethrough, at least the ignition resistance being connected in an electrically conducting manner to the piezoelectrically active electrode surface located opposite thereto by the at least one perforation in the support.
Claim 7
Dependent Claim
40 words
A detonator element according to claim 5, wherein the at least one electronic component means is connected in an electrically conducting manner to the piezoelectrically active electrode surface located opposite thereto by the at least one perforation in the support.
Claim 8
Dependent Claim
33 words
A detonator element according to claim 4, wherein the piezoelectric material of the support and the piezoelectrically active electrode surfaces are responsive to force applied thereto for providing the power for enabling detonation.
Claim 9
Dependent Claim
28 words
A detonator element according to claim 1, wherein the at least one electronic component means include at least one of a diode, transistor, thyristor, resistor, capacitor, and inductor.
Claim 10
Dependent Claim
27 words
A detonator element according to claim 1, wherein the at least one electronic component means comprises means having at least two connection points in the electric circuit.
Claim 11
Dependent Claim
15 words
A detonator element according to claim 1, wherein the support is a circular disc-like member.
Claim 12
Dependent Claim
73 words
A detonator element according to claim 1, wherein the support has an upper and lower surface, at least the ignition resistance and the at least one electronic component means being disposed on the upper surface of the support, the insulating member having an upper and lower surface, the lower surface of the insulating member contacting at least one of the upper surface of the support and the at least one electronic component means.
Claim 13
Dependent Claim
28 words
A detonator element according to claim 11, wherein the recess of the insulating member extends through the insulating member from the lower surface to the upper surface thereof.
References Cited (Backward Citations)
US2881703A
Cited
US3070013A
Cited
US3198117A
Cited
US3670653A
Cited
US3269315A
Cited
US3292537A
Cited
US3669022A
Cited
US3725671A
Cited
US3882324A
Cited
US4145970A
Cited
US4137851A
Cited
US4350096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |