US3893395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End coupler for heat resistant mild detonating fuse
Assignee: United States Department of the Navy
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Filing: 1965-07-26
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Granted: 1975-07-08
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Expires: 1985-07-26
Abstract
Abstract 1. An end coupler for transmitting a detonation from a heat resistant mild detonating fuse to a base charge having a diameter greater than the diameter of the mild detonating fuse comprising, AN ELONGATED HOUSING, SAID HOUSING HAVING A TAPERED RECESS FORMED IN ONE END THEREOF, SAID HOUSING HAVING AN AXIAL BORE FORMED IN THE OTHER END THEREOF AND INTERSECTING SAID TAPERED RECESS, TAPERED RECESS BEING FILLED WITH HEXANITROSTILBENE (Grade 1) explosive, WHEREBY A HEAT RESISTANT MILD DETONATING FUSE MAY BE INSERTED INTO SAID AXIAL BORE AND A BASE CHARGE MAY BE POSITIONED ADJACENT SAID ONE END OF SAID HOUSING SO THAT SAID END COUPLER MAY AMPLIFY A SHOCK WAVE PRODUCED BY THE MILD DETONATING FUSE TO A MAGNITUDE NECESSARY FOR THE DETONATION OF THE BASE CHARGE.
Inventors
- 👤 Earl E Kilmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:22
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/04; C; C06; C06C; C06C5/00; C06C5/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
126 words
An end coupler for transmitting a detonation from a heat resistant mild detonating fuse to a base charge having a diameter greater than the diameter of the mild detonating fuse comprising, an elongated housing, said housing having a tapered recess formed in one end thereof, said housing having an axial bore formed in the other end thereof and intersecting said tapered recess, tapered recess being filled with hexanitrostilbene (Grade 1) explosive, whereby a heat resistant mild detonating fuse may be inserted into said axial bore and a base charge may be positioned adjacent said one end of said housing so that said end coupler may amplify a shock wave produced by the mild detonating fuse to a magnitude necessary for the detonation of the base charge.
Claim 2
Dependent Claim
126 words
An end coupler for transmitting a detonation from a heat resistant mild detonating fuse to a base charge having a diameter greater than the diameter of the mild detonating fuse comprising, an elongated housing, said housing having a tapered recess formed in one end thereof, said housing having an axial bore formed in the other end thereof and intersecting said tapered recess, tapered recess being filled with hexanitrostilbene (Grade 1) explosive, whereby a heat resistant mild detonating fuse may be inserted into said axial bore and a base charge may be positioned adjacent said one end of said housing so that said end coupler may amplify a shock wave produced by the mild detonating fuse to a magnitude necessary for the detonation of the base charge.
Claim 3
Dependent Claim
20 words
The end coupler of claim 1 wherein said tapered recess is formed to have an included angle less than 30*.
Claim 4
Dependent Claim
31 words
The end coupler of claim 1 wherein the diameter of said tapered recess at the point of intersection with said axial bore is less than the diameter of said axial bore.
Claim 5
Dependent Claim
31 words
The end coupler of claim 2 wherein the diameter of the tapered recess at the point of intersection with the axial bore is less than the diameter of said axial bore.
Claim 6
Dependent Claim
34 words
The coupler of claim 2 wherein said housing has a counterbore formed in said other end of said housing to receive an adhesive for fixedly securing the mild detonating fuse within the end coupler.
Claim 7
Dependent Claim
118 words
In an explosive train having a mild detonating fuse, a base charge and an initiator for the mild detonating fuse, the improvement comprising, an end coupler having an elongated housing, said housing having a frusto-conical recess formed in one end thereof, said housing having an axial bore formed in the other end thereof and intersecting said recess for receiving one end of said mild detonating fuse, said mild detonating fuse being packed with heat resistant explosive and having the initiator operatively connected at the other end thereof, said recess being filled with hexanitrostilbene (Grade 1) explosive, and said base charge being mounted upon the end of said housing in the operative engagement with said hexanitrostilbene (Grade 1) explosive.
Claim 8
Dependent Claim
118 words
In an explosive train having a mild detonating fuse, a base charge and an initiator for the mild detonating fuse, the improvement comprising, an end coupler having an elongated housing, said housing having a frusto-conical recess formed in one end thereof, said housing having an axial bore formed in the other end thereof and intersecting said recess for receiving one end of said mild detonating fuse, said mild detonating fuse being packed with heat resistant explosive and having the initiator operatively connected at the other end thereof, said recess being filled with hexanitrostilbene (Grade 1) explosive, and said base charge being mounted upon the end of said housing in the operative engagement with said hexanitrostilbene (Grade 1) explosive.
Claim 9
Dependent Claim
28 words
The explosive train of claim 6 wherein the heat resistant explosive in said mild detonating fuse is selected from the group consisting essentially of dipicramid, hexanitrostilbene, and nonanitroterphenyl.
Claim 10
Dependent Claim
27 words
The explosive train of claim 6 wherein the explosive in said base charge consists essentially of an explosive selected from the group of dipicramid, hexanitrostilbene, and nonanitroterphenyl.
Claim 11
Dependent Claim
31 words
The explosive train of claim 7 wherein the diameter of the frusto-conical recess at the point of intersection with said axial bore is less than the diameter of said axial bore.
Claim 12
Dependent Claim
22 words
The explosive train of claim 7 wherein said frusto-conical recess is formed to have an included angle which is less than 30*.
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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |