US3727552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bidirectional delay connector
Assignee: ETI EXPLOSIVES TECHNOLOGIES INTE
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Filing: 1971-06-04
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Granted: 1973-04-17
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Expires: 1991-06-04
Abstract
Abstract Bidirectional delay connectors for detonating fuse having a shell containing two detonating explosive charges, each end of the shell adjacent the detonating charges adapted to receive detonating fuse, heat-sensitive charges adjacent each detonating charge and in close proximity to exothermic charges in opposite ends of a metal relay capsule. A heat conductive metallic delay element is positioned between each heat-sensitive charge and said relay capsule containing exothermic charges.
Inventors
- 👤 H Zakheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:36
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/16; F42B1/00; F42B1/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
93 words
In a bidirectional delay connector comprising a shell containing two detonating explosive charges, each end of the shell adjacent the detonating charges adapted to receive detonating fuse, heat-sensitive explosive charges adjacent each detonating charge and in close proximity to exothermic charges contained in opposite ends of a metal relay capsule substantially centrally located in the connector, the improvement which comprises positioning a heat-conductive wafer-shaped metallic delay element having a thickness in the range 0.002 to about 0.10 inch between each heat-sensitive charge and said relay capsule containing said exothermic charges in the shell.
Claim 2
Dependent Claim
93 words
In a bidirectional delay connector comprising a shell containing two detonating explosive charges, each end of the shell adjacent the detonating charges adapted to receive detonating fuse, heat-sensitive explosive charges adjacent each detonating charge and in close proximity to exothermic charges contained in opposite ends of a metal relay capsule substantially centrally located in the connector, the improvement which comprises positioning a heat-conductive wafer-shaped metallic delay element having a thickness in the range 0.002 to about 0.10 inch between each heat-sensitive charge and said relay capsule containing said exothermic charges in the shell.
Claim 3
Dependent Claim
12 words
The product of claim 1 wherein the metallic delay elements contain aluminum.
Claim 4
Dependent Claim
12 words
The product of claim 1 wherein the metallic delay elements contain lead.
Claim 5
Dependent Claim
12 words
The product of claim 1 wherein the metallic delay elements contain tin.
Claim 6
Dependent Claim
14 words
The product of claim 1 wherein the metallic delay elements are finely-divided metal powder.
Claim 7
Dependent Claim
27 words
The product of claim 1 wherein the shell is tubular and the wall of which extends beyond the detonating explosive and is adapted to receive detonating fuse.
Claim 8
Dependent Claim
21 words
The product of claim 1 containing a plurality of wafer-shaped metallic delay elements between the relay capsule and each heat-sensitive charge.
Claim 9
Dependent Claim
20 words
The product of claim 1 wherein the metallic delay elements in each end of the connector are of different thicknesses.
Claim 10
Dependent Claim
21 words
The product of claim 1 wherein the metallic delay elements in each end of the connector are of different chemical composition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |