Patent US4230075A successfully refreshed from Google Patents.
Patent US3765333A successfully refreshed from Google Patents.
US3765333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subsea cable cutter and the method of its use
Assignee: Jet Research Center Inc
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Filing: 1971-06-14
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Granted: 1973-10-16
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Expires: 1991-06-14
Abstract
Abstract The present invention relates to an apparatus for severing cable or line at a preselected time and more particularly to a cutter employing a shaped charge for severing mooring cable or line beneath the surface of the water.
Inventors
- 👤 W Reed
- 👤 Livingston K Bratton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:13
CPC Classifications
B; B63; B63G; B63G7/00; B63G7/02; B63G7/04; F; F42; F42B; F42B3/00; F42B3/08
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
112 words
A cable cutter comprising: a. An elongated tubular sleeve having each end thereof open and being adapted for loose and slidable placement around a cable; b. an elongated tubular housing having each end thereof closed and being tangentially and fixedly attached to said sleeve; c. a shaped charge positioned within said housing so as to direct, upon detonation, a jet blast toward said sleeve wherein said shaped charge is of sufficient size to generate a blast capable of severing said cable and at least said tangentially attached portions of said housing and said sleeve; and d. a self-contained timed detonating means disposed within said housing and operatively connected to said shaped charge.
Claim 2
Dependent Claim
112 words
A cable cutter comprising: a. An elongated tubular sleeve having each end thereof open and being adapted for loose and slidable placement around a cable; b. an elongated tubular housing having each end thereof closed and being tangentially and fixedly attached to said sleeve; c. a shaped charge positioned within said housing so as to direct, upon detonation, a jet blast toward said sleeve wherein said shaped charge is of sufficient size to generate a blast capable of severing said cable and at least said tangentially attached portions of said housing and said sleeve; and d. a self-contained timed detonating means disposed within said housing and operatively connected to said shaped charge.
Claim 3
Dependent Claim
18 words
an elongated tubular housing having each end thereof closed and being tangentially and fixedly attached to said sleeve,
Claim 4
Dependent Claim
18 words
an elongated tubular housing having each end thereof closed and being tangentially and fixedly attached to said sleeve,
Claim 5
Dependent Claim
15 words
The cable cutter of claim 1 wherein said shaped charge is a linear shaped charge.
Claim 6
Dependent Claim
14 words
The cable cutter of claim 1 wherein said shaped charge is formed of cyclotrimethylenetrinitramine.
Claim 7
Dependent Claim
50 words
a shaped charge positioned within said housing so as to direct, upon detonation, a jet blast toward said sleeve wherein said shaped charge is of sufficient size to generate a blast capable of severing said cable and at least said tangentially attached portions of said housing and said sleeve; and
Claim 8
Dependent Claim
50 words
a shaped charge positioned within said housing so as to direct, upon detonation, a jet blast toward said sleeve wherein said shaped charge is of sufficient size to generate a blast capable of severing said cable and at least said tangentially attached portions of said housing and said sleeve; and
Claim 9
Dependent Claim
41 words
a self-contained timed detonating means disposed within said housing and operatively connected to said shaped charge; b. sliding said cable cutter down said suspended cable until said shaped charge is detonated by said timed detonating means, whereby said cable is cut.
Claim 10
Dependent Claim
41 words
a self-contained timed detonating means disposed within said housing and operatively connected to said shaped charge; b. sliding said cable cutter down said suspended cable until said shaped charge is detonated by said timed detonating means, whereby said cable is cut.
Claim 11
Dependent Claim
44 words
The cable cutter of claim 1 wherein said timed detonating means comprises: a. a timer; b. a pressure-operated switch to initiate said timer at a predetermined pressure; c. a battery operatively connected to said timer; and d. a detonator operatively connected to said timer.
Claim 12
Dependent Claim
22 words
The cable cutter of claim 1 wherein said sleeve comprises two symmetrical, elongated, curved members connected along one elongated side by hinges.
Claim 13
Dependent Claim
35 words
The cable cutter of claim 1 wherein each of said closed ends of said housing is a watertight seal, said housing having sufficient compressive strength to withstand up to about 20,000 feet of hydraulic head.
Claim 14
Dependent Claim
34 words
The cable cutter of claim 1 wherein said housing is attached to said sleeve such that a plane containing the longitudinal axis of said housing is perpendicular to the longitudinal axis of said sleeve.
Claim 15
Dependent Claim
18 words
The cable cutter of claim 7 wherein said housing is set into the outer wall of said sleeve.
Claim 16
Independent Claim
44 words
A method of cutting cable suspended in a body of water, said cutting occurring at predetermined point below the surface of said water, comprising the steps of: a. placing a cable cutter on the cable sought to be cut, wherein said cable cutter comprises
Claim 17
Independent Claim
44 words
A method of cutting cable suspended in a body of water, said cutting occurring at predetermined point below the surface of said water, comprising the steps of: a. placing a cable cutter on the cable sought to be cut, wherein said cable cutter comprises
Claim 18
Dependent Claim
14 words
The method of claim 9 wherein said shaped charge is a linear shaped charge.
Claim 19
Dependent Claim
13 words
The method of claim 9 wherein said shaped charge is formed of cyclomethylenetrinitramine.
Claim 20
Dependent Claim
43 words
The method of claim 9 wherein said timed detonating means comprises: a. a timer b. a pressure-operated switch to initiate said timer at a predetermined pressure; c. a battery operatively connected to said timer; and d. a detonator operatively connected to sAid timer.
Claim 21
Dependent Claim
21 words
The method of claim 9 wherein said sleeve comprises two symmetrical, elongated, curved members connected along one elongated side by hinges.
Claim 22
Dependent Claim
34 words
The method of claim 9 wherein each of said closed ends of said housing is a watertight seal, said housing having sufficient compressive strength to withstand up to about 20,000 feet of hydraulic head.
Claim 23
Dependent Claim
33 words
The method of claim 9 wherein said housing is attached to said sleeve such that a plane containing the longitudinal axis of said housing is perpendicular to the longitudinal axis of said sleeve.
Claim 24
Dependent Claim
17 words
The method of claim 9 wherein said housing is set into the outer wall of said sleeve.
Claim 25
Dependent Claim
16 words
The method of claim 9 wherein said timed detonating means is activated by predetermined hydrostatic head.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |