Patent US3658006A successfully refreshed from Google Patents.
US3658006A
Expired / Lapsed
US
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Explosively actuated egress and ingress device and method
Assignee: Explosive Technology Inc
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Filing: 1969-02-05
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Granted: 1972-04-25
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Expires: 1989-02-05
Abstract
Abstract Explosively actuated egress and ingress device having a case formed of relatively light-weight material with an outer surface and having a linear-shaped explosive positioned within the case adjacent to the outer surface and with a resilient backing material in the case. A pliable gathering material may also be provided within the case to the rear of the linear-shaped explosive charge. The method includes the positioning of the devices for cutting large holes.
Inventors
- 👤 Gordon A Nistler
- 👤 Harold W Hannagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:39
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/08
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
223 words
A self-contained explosively actuated ingress and egress device for forming an opening in a wall-like structure having an exposed surface, said device being detonatable from a safe distance from said wall-like structure and comprising an enclosing case normally surrounding the operative components of said device, said case being formed of a relatively light-weight substantially non-fragmentable material having an outer surface adapted to be placed in engagement with the exposed surface of the wall-like structure in which the opening is to be cut, a linear shaped explosive charge positioned within the case adjacent said outer surface and lying along a line which defines at least a portion of the perimeter of the opening to be cut into the wall-like structure, a resilient backing material mounted within said case to the rear of the linear shaped explosive charge and surrounded by said case, and integral self-contained means normally disposed within and enclosed by said case for detonating said linear shaped explosive charge; said last named means including an elongated confined detonating cord operatively connected with said explosive charge, and a firing mechanism operatively connected with said confined detonating cord, said detonating cord and said firing mechanism normally being enclosed within said case but being selectively removable from the confines of said case and actuatable from a distance when said explosive charge is to be detonated.
Claim 2
Dependent Claim
223 words
A self-contained explosively actuated ingress and egress device for forming an opening in a wall-like structure having an exposed surface, said device being detonatable from a safe distance from said wall-like structure and comprising an enclosing case normally surrounding the operative components of said device, said case being formed of a relatively light-weight substantially non-fragmentable material having an outer surface adapted to be placed in engagement with the exposed surface of the wall-like structure in which the opening is to be cut, a linear shaped explosive charge positioned within the case adjacent said outer surface and lying along a line which defines at least a portion of the perimeter of the opening to be cut into the wall-like structure, a resilient backing material mounted within said case to the rear of the linear shaped explosive charge and surrounded by said case, and integral self-contained means normally disposed within and enclosed by said case for detonating said linear shaped explosive charge; said last named means including an elongated confined detonating cord operatively connected with said explosive charge, and a firing mechanism operatively connected with said confined detonating cord, said detonating cord and said firing mechanism normally being enclosed within said case but being selectively removable from the confines of said case and actuatable from a distance when said explosive charge is to be detonated.
Claim 3
Dependent Claim
25 words
A device as in claim 1 together with a pliable gathering material mounted in the case to the rear of the linear shaped explosive charge.
Claim 4
Dependent Claim
23 words
A device as in claim 2 wherein said gathering material is in the foRm of a flexible sheet surrounding said resilient backing material.
Claim 5
Dependent Claim
37 words
A device as in claim 1 wherein said case is formed with a means permitting an opening to be readily formed within the case to permit access to the firing mechanism and to the confined detonating cord.
Claim 6
Dependent Claim
18 words
A device as in claim 1 wherein said case is formed of a pair of telescoping box-like sections.
Claim 7
Dependent Claim
37 words
A device as in claim 2 wherein said linear shaped explosive charge, said backing material and said gathering material are in a general alignment with the perimeter for the opening to be cut into the wall-like structure.
Claim 8
Dependent Claim
17 words
A device as in claim 1 wherein said resilient backing material is a closed cell syntatic foam.
Claim 9
Dependent Claim
29 words
A device as in claim 1 wherein said case is provided with flaps which can be opened to permit access to said firing mechanism and said confined detonating cord.
Claim 10
Dependent Claim
29 words
A device as in claim 1 together with means mounted on the case to facilitate securing the case to the wall in which the opening is to be cut.
Claim 11
Dependent Claim
120 words
A device as in claim 1 wherein said firing mechanism is comprised of a housing, a bore in said housing for receiving said confined detonating cord, a detonator mounted in the housing and engaging the cord, a firing pin slidably mounted in the housing, a spring means mounted in the housing for yieldably urging the firing pin in the direction toward the detonator, a trigger mounted in the housing being movable between the first and second positions, said trigger in said first position preventing said firing pin from moving into engagement with said detonator and in second position permitting said firing pin to move into engagement with the detonator and spring means yieldably urging the trigger into the first position.
Claim 12
Dependent Claim
36 words
A device as in claim 1 together with a centrally disposed compartment formed in said housing, said compartment being adapted to receive an additional explosive charge, said case being formed to permit access to said compartment.
Claim 13
Dependent Claim
38 words
A device as in claim 11 wherein said case and said linear shaped explosive charge are formed so that said additional explosive charge can be connected to said linear shaped explosive charge for detonating said additional explosive charge.
Claim 14
Dependent Claim
30 words
A device as in claim 12 wherein said case is formed with a compartment overlying the centrally disposed compartment for receiving the elongate confined detonating cord and the firing mechanism.
Claim 15
Dependent Claim
13 words
A device as in claim 1 wherein said resilient backing material is Vermiculite.
Claim 16
Dependent Claim
34 words
A device as in claim 1 wherein said case is formed of a molded plastic having a compartment disposed behind the linear-shaped explosive charge and wherein said backing material is disposed in said compartment.
Claim 17
Dependent Claim
40 words
A device as in claim 1 together with a centrally disposed compartment formed in said housing, an additional explosive charge in said centrally disposed compartment, and means for detonating said additional explosive charge connected to said elongate confined detonating cord.
Claim 18
Dependent Claim
45 words
A device as in claim 1 wherein said case is formed of plastic and wherein said case has a weakened section in one wall, said weakened section being capable of being broken out to permit access to the firing mechanism and the confined detonating cord.
Claim 19
Dependent Claim
29 words
A device as in claim 1 together with safety means disposed within the linear-shaped explosive charge for defeating the jet of the linear-shaped explosive charge when it is detonated.
Claim 20
Dependent Claim
50 words
A device as in claim 18 wherein said linear-shaped explosive charge is generally V-shaped in cross section and having a generally V-shaped open recess extending longitudinally of the same and wherein said safety means is in the form of wire disposed in the open recess of the linear-shaped explosive charge.
Claim 21
Dependent Claim
25 words
A device as in claim 19 together with means carried by said wire to facilitate ready removal of the same from the linear-shaped explosive charge.
Claim 22
Dependent Claim
174 words
In an ingress and egress device adapted to be explosively actuated for forming an opening in a wall-like structure having an exposed surface, a case formed of a relatively light-weight, substantially non-fragmentable material and which has an outer planar surface adapted to be placed in engagement with the exposed surface of the wall-like structure in which the opening is to be cut, a linear-shaped explosive charge carried by the case adjacent to the outer surface and lying along at least a portion of the line forming at least part of the perimeter for the opening to be cut into the wall-like structure, safety means within the case removably mounted adjacent the linear-shaped explosive charge for defeating the jet created by detonation of the linear-shaped explosive charge prior to removal of said safety means from adjacent said explosive charge, a resilient backing material carried by the case and disposed to the rear of the linear-shaped explosive charge, and integral self-contained means disposed at least partially within said case for selectively detonating said linear-shaped explosive charge.
Claim 23
Dependent Claim
174 words
In an ingress and egress device adapted to be explosively actuated for forming an opening in a wall-like structure having an exposed surface, a case formed of a relatively light-weight, substantially non-fragmentable material and which has an outer planar surface adapted to be placed in engagement with the exposed surface of the wall-like structure in which the opening is to be cut, a linear-shaped explosive charge carried by the case adjacent to the outer surface and lying along at least a portion of the line forming at least part of the perimeter for the opening to be cut into the wall-like structure, safety means within the case removably mounted adjacent the linear-shaped explosive charge for defeating the jet created by detonation of the linear-shaped explosive charge prior to removal of said safety means from adjacent said explosive charge, a resilient backing material carried by the case and disposed to the rear of the linear-shaped explosive charge, and integral self-contained means disposed at least partially within said case for selectively detonating said linear-shaped explosive charge.
Claim 24
Dependent Claim
40 words
A device as in claim 21 wherein said case is formed with a compartment to the rear of the linear-shaped explosive charge and wherein the backing material is disposed in the compartment to the rear of the linear-shaped explosive charge.
Claim 25
Dependent Claim
16 words
A device as in claim 22 wherein said backing material is in the form of Vermiculite.
Claim 26
Dependent Claim
69 words
A device as in claim 21 wherein said linear-shaped explosive charge is substantially V-shaped in cross section and has an open ''''V'''' extending longitudinally of the same and wherein said safety means is in the form of a wire disposed in the open ''''V.'''' 25. A device as in claim 24 together with means secured to the wire for facilitating removal of the wire from the linear-shaped explosive charge.
Claim 27
Dependent Claim
18 words
A device as in claim 21 wherein said linear-shaped explosive charge is positioned along a substantially straight line.
Claim 28
Dependent Claim
41 words
A device as in claim 21 in which said means for detonating the linear-shaped explosive charge is normally disposed entirely within and enclosed by said case within a space provided therein to receive said means for detonating the linear-shaped explosive charge.
Claim 29
Dependent Claim
33 words
A device as in claim 27 wherein said case is provided with a weakened section which is adapted to be broken to gain access to the means for detonating the linear-shaped explosive charge.
Claim 30
Dependent Claim
185 words
In an assembly of the character described, first and second devices adapted to be explosively actuated, each of said devices comprising a case formed of a relatively light-weight, substantially non-fragmentable material and which has an outer surface adapted to be placed in engagement with the exposed surface of the wall-like structure in which the opening is to be cut, a linear-shaped explosive charge carried by the case adjacent to the outer surface and lying along at least a portion of a line which defines at least a portion of the perimeter for the opening to be cut into the wall-like structure, safety means within the case removably mounted adjacent the linear-shaped explosive charge for defeating the jet created by detonation of the linear-shaped explosive charge prior to removal of said safety means from adjacent said explosive charge, a resilient backing material carried by the case to the rear of the linear-shaped explosive charge, means carried by each of the cases for detonating the linear-shaped explosive charge carried thereby, and means interconnecting said means for detonating whereby both of said devices may be initiated substantially simultaneously.
Claim 31
Dependent Claim
185 words
In an assembly of the character described, first and second devices adapted to be explosively actuated, each of said devices comprising a case formed of a relatively light-weight, substantially non-fragmentable material and which has an outer surface adapted to be placed in engagement with the exposed surface of the wall-like structure in which the opening is to be cut, a linear-shaped explosive charge carried by the case adjacent to the outer surface and lying along at least a portion of a line which defines at least a portion of the perimeter for the opening to be cut into the wall-like structure, safety means within the case removably mounted adjacent the linear-shaped explosive charge for defeating the jet created by detonation of the linear-shaped explosive charge prior to removal of said safety means from adjacent said explosive charge, a resilient backing material carried by the case to the rear of the linear-shaped explosive charge, means carried by each of the cases for detonating the linear-shaped explosive charge carried thereby, and means interconnecting said means for detonating whereby both of said devices may be initiated substantially simultaneously.
Claim 32
Dependent Claim
35 words
An assembly as in claim 29 wherein said devices are substantially straight and are adapted to be positioned in spaced parallel positions whereby when they are initiated, they will cut two relatively straight parallel lines.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |