US3665887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for feeding a cable through an aperture in a bulkhead separating two liquids at different pressures
Assignee: HARLAND SIMON Ltd
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Filing: 1970-06-11
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Granted: 1972-05-30
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Expires: 1990-06-11
Abstract
Abstract Apparatus for forcing an insulated cable through an aperture in a bulkhead separating two fluids at different pressures comprising a pair of independently reciprocatable elements, means to cause said elements selectively to grip the cable and at the same time to form a seal around the cable, the arrangement being such that while one element grips and moves the cable in the required direction through the bulkhead, the other element is returning with its grip released to take up a position ready to grip the cable again and to continue its movement before the said one element releases the cable to return to begin another cycle, and means surrounding and in sealing engagement with the elements, said means being in sealing engagement around said aperture to separate the fluid from the other fluid.
Inventors
- 👤 Nicolas Worthing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:32
CPC Classifications
B; B63; B63G; B63G8/00; B63G8/38
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
199 words
Apparatus for forcing an insulated cable at a steady continuous speed through an aperture in a bulkhead separating two fluids at different pressures comprising a pair of independently reciprocatable elements, grip effecting means to cause said elements selectively to grip the cable and at the same time to form a seal around the cable, operating means for reciprocating said elements independently, control means for controlling the operation of said grip effecting means and said operating means for causing a cycle of operations in which one of said elements grips the cable and is operated by its associated operating means to move the cable in one direction through said aperture while the other of said elements, with its grip released, is being returned in the opposite direction by its associated operating means to take up a position to grip the cable and to then move in said one direction before the said one of said elements releases the cable to return in said opposite direction to begin another cycle, and sealing means surrounding and in sealing engagement with said reciprocatable elements, said sealing means being in sealing engagement around said aperture to separate the one fluid from the other fluid.
Claim 2
Dependent Claim
199 words
Apparatus for forcing an insulated cable at a steady continuous speed through an aperture in a bulkhead separating two fluids at different pressures comprising a pair of independently reciprocatable elements, grip effecting means to cause said elements selectively to grip the cable and at the same time to form a seal around the cable, operating means for reciprocating said elements independently, control means for controlling the operation of said grip effecting means and said operating means for causing a cycle of operations in which one of said elements grips the cable and is operated by its associated operating means to move the cable in one direction through said aperture while the other of said elements, with its grip released, is being returned in the opposite direction by its associated operating means to take up a position to grip the cable and to then move in said one direction before the said one of said elements releases the cable to return in said opposite direction to begin another cycle, and sealing means surrounding and in sealing engagement with said reciprocatable elements, said sealing means being in sealing engagement around said aperture to separate the one fluid from the other fluid.
Claim 3
Dependent Claim
69 words
Apparatus as claimed in claim 1, in which said sealing means separating one fluid from the other fluid includes an outer casing, each of said elements comprises an inner tube, said tubes being inside of and surrounded by said casing at separate locations therein and being reciprocatable by said operating means, said operating means comprising power means, and each of said tubes being in sealed relationship with said casing.
Claim 4
Dependent Claim
63 words
Apparatus as claimed in claim 2, in which said bulkhead is the bulkhead of a submarine, said casing is connected to and in sealing engagement with the aperture in the bulkhead and in which the cable is passed through said aperture in said bulkhead and an aperture in said casing leading to the interior of the submarine, and through each reciprocatable inner tube.
Claim 5
Dependent Claim
23 words
Apparatus according to claim 3, including independent means for each inner tube, which means are hydraulically operated to grip and release the cable.
Claim 6
Dependent Claim
60 words
Apparatus according to claim 4, in which each of said independent means comprises a resilientlY deformable material so positioned inside the associated tube that in a released state there is a clearance between the material and the cable and in a gripped state the material grips the cable and forms a seal between the cable and the respective inner tube.
Claim 7
Dependent Claim
52 words
Apparatus according to claim 5, in which each of said independent means comprises one or more resiliently deformable gripping sleeves arranged in recesses within the inner tube, each of said sleeves being moved between gripping and release positions by fluid pressure acting respectively on the outside or the inside of the sleeve.
Claim 8
Dependent Claim
70 words
Apparatus according to claim 6, including a double acting piston pump for each sleeve of each gripping means, a first fluid line leading from the pump, on one side of the piston, via a telescopic connection, to the exterior of the gripping sleeve(s) and a second fluid line leading from the pump on the other side of the piston, via a telescopic connection, to the inside of the gripping sleeve(s).
Claim 9
Dependent Claim
69 words
Apparatus according to claim 1, including a casing in which said independently reciprocatable elements are mounted, and fluid volume compensating means associated with each said element to prevent fluid being pumped out of the casing upon movement of an element, said compensating means being arranged to pump an equal amount of fluid in the opposite direction to that being pumped at any given time by one of said elements.
Claim 10
Dependent Claim
21 words
Apparatus according to claim 8, in which the compensating means comprises at least one double ended piston assembly for each element.
Claim 11
Dependent Claim
62 words
Apparatus according to claim 9, including a double ended piston assembly arranged one each side of its respective element, the two ends of said piston being located respectively in chambers connected to the respective ends of the element, and means connecting said two double ended pistons with the respective element to cause it to move in the opposite direction to the element.
Claim 12
Dependent Claim
59 words
Apparatus according to claim 10, in which the connecting means comprises two endless drive systems each entrained around a pair of pulleys arranged on opposite sides of each element, one run of each endless drive system being secured to the element and the other run of each endless drive system being secured to one of the double ended pistons.
Claim 13
Dependent Claim
66 words
Apparatus according to claim 1, in which said grip effecting means and said operating means are operable by fluid pressure, and including a rotary valve for controlling the application of fluid pressure to said operating means to move said elements and said grip effecting means to cause them selectively to grip the cable, and a ratchet mechanism for advancing said valve upon movement of the elements.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |