US3570402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detonator connector
Assignee: Imperial Chemical Industries Ltd
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Filing: 1968-10-11
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Granted: 1971-03-16
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Expires: 1988-10-11
Abstract
Abstract Detonator connector for rapid assembly of detonator fuse cord and detonator contains two chambers. These are connected so that detonation of the detonator in one chamber will effect detonation of the fuse cord in the other chamber. This connector is for use in marine seismographic prospecting and adds to the speed and safety of the operation.
Inventors
- 👤 David Keay Crichton Anderson
- 👤 Keith Brian Ellis
- 👤 Edward Mullen
- 👤 Frank Mcdonald Murray
- 👤 William Neilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:58
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/04; F42D1/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
95 words
A connector, for connecting a detonator to a detonating fuse cord in marine seismographic prospecting, comprising a body member formed with two substantially parallel intercommunicating bores which permit an electric detonator and a length of detonating fuse cord respectively to be slidably inserted therein and held in such proximity to each other that detonation of the detonator causes detonation of the fuse cord, and at least one metal tie rod attached by one of its ends to the body member and having a free end adapted to join the connector to an electric firing cable.
Claim 2
Dependent Claim
95 words
A connector, for connecting a detonator to a detonating fuse cord in marine seismographic prospecting, comprising a body member formed with two substantially parallel intercommunicating bores which permit an electric detonator and a length of detonating fuse cord respectively to be slidably inserted therein and held in such proximity to each other that detonation of the detonator causes detonation of the fuse cord, and at least one metal tie rod attached by one of its ends to the body member and having a free end adapted to join the connector to an electric firing cable.
Claim 3
Dependent Claim
28 words
A connector as claimed in claim 1 wherein the body member comprises mouldable plastics material and one end of the tie rod is moulded into the body member.
Claim 4
Dependent Claim
17 words
A connector as claimed in claim 1 wherein the body member is formed of resilient plastics material.
Claim 5
Dependent Claim
15 words
A connector as claimed in claim 1 wherein the body member is formed from polyethylene.
Claim 6
Dependent Claim
15 words
A connector as claimed in claim 1 wherein the bores overlap partially in cross section.
Claim 7
Dependent Claim
21 words
A connector as claimed in claim 1 wherein the body member is adapted to retain a detonator as an interference fit.
Claim 8
Dependent Claim
34 words
A connector as claimed in claim 1 wherein the body member is formed with at least one external rigid lug having a groove wherein a leading wire of an electric detonator may be anchored.
Claim 9
Dependent Claim
57 words
A connector as claimed in claim 1 wherein the bore for holding the fuse cord extends continuously throughout the length of the body member and the body member defines a third bore into which the end of the fuse cord may be inserted after being drawn through its respective bore in the body member and doubled backwards.
Claim 10
Dependent Claim
26 words
A connector as claimed in claim 1 including a portion of metal foil attached to the body member for providing a larger area for electrical grounding.
Claim 11
Dependent Claim
22 words
A connector as claimed in claim 9 wherein the foil is disposed as a sleeve on a portion of the body member.
Claim 12
Dependent Claim
37 words
A connector as claimed in claim 1 wherein the free end of the tie rod is formed as a slipring adapted in operation to slide down a firing cable anD engage a stopper on the cable end.
Claim 13
Dependent Claim
91 words
A connector as claimed in claim 1 having two tie rods, the free end of each rod being formed as a hook, the hooks being adapted to be hooked together in operation to hold the tie rods round an electric firing cable so as to act as a slipring and the body member being destructible by the explosion of a detonator and the portion of fuse cord which, in use, is retained within the body member so as to release the tie rods when the detonator and fuse cord are exploded.
Claim 14
Dependent Claim
33 words
A connector as claimed in claim 1 wherein the free end of the tie rod is formed as a split ring adapted in operation to engage a slipring on an electric firing cable.
Claim 15
Dependent Claim
62 words
An assembly for use in marine seismographic prospecting comprising a connector as claimed in claim 1 having inserted therein an electric detonator and a length of detonating fuse cord, an end portion of both electric leading wires of the detonator being bared and one bared end portion of one of the leading wires being in electrical contact with the metal tie rod.
Claim 16
Dependent Claim
33 words
An assembly as in claim 14 including an electrical firing cable and further including means mechanically and electrically connecting the free end of the tie rod to the cable for sliding movement therealong.
References Cited (Backward Citations)
US3173992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |