Patent US3826023A successfully refreshed from Google Patents.
US3826023A
Expired / Lapsed
US
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Wave motion compensating assembly for suction dredger
Assignee: Individual
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Filing: 1973-01-29
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Granted: 1974-07-30
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Expires: 1993-01-29
Abstract
Abstract A Suction dredger, comprising a vessel and a conduit suspended on the vessel by means of at least one lifting cable guided over a guide pulley beared in a support, the lifting cable being connected via a dashing compensator comprising a cable length variator with a winch mounted on the vessel is improved for considerably reducing the wear of the expensive lifting cable. To this aim the support of the guide pulley of the lifting cable is suspended on the vessel by means of a support cable connected to the vessel through the cable length variator.
Inventors
- 👤 Koning J De
- 👤 Der Veen R Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:55
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/06; E02F9/067
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
233 words
A suction dredger assembly comprising, in combination: a buoyant hull having winch means and suction dredging means mounted thereon, said suction dredging means including a nozzle adapted to be inserted into the bottom below said hull and a flexible conduit portion between said nozzle and the hull whereby the flexible conduit portion is free to flex as the hull rises and falls due to wave action without significantly affecting the position of said nozzle; a wave motion compensating assembly comprising a length of motion-compensating cable secured to said hull, a first pulley fixed to said hull and over which said motion-compensating cable is trained, a support fixed to said motion-compensating cable below said pulley, and load-responsive means for paying out and reeling in said motion-compensating cable over said first pulley; and a winch cable issuing from said winch means and connected to said nozzle to support same in desired bottom-penetrating position, and a load-bearing pulley carried by said support and over which said winch cable is trained whereby the load imposed on said winch cable is imparted to said motion-compensating cable; said motion-compensating cable being of a length to position said load-bearing pulley to define a substantially horizontal winch cable section between such load bearing pulley and said winch means whereby minimally to travel said winch cable over said load-bearing pulley in response to paying out and reeling in of said motion-compensating cable.
Claim 2
Dependent Claim
233 words
A suction dredger assembly comprising, in combination: a buoyant hull having winch means and suction dredging means mounted thereon, said suction dredging means including a nozzle adapted to be inserted into the bottom below said hull and a flexible conduit portion between said nozzle and the hull whereby the flexible conduit portion is free to flex as the hull rises and falls due to wave action without significantly affecting the position of said nozzle; a wave motion compensating assembly comprising a length of motion-compensating cable secured to said hull, a first pulley fixed to said hull and over which said motion-compensating cable is trained, a support fixed to said motion-compensating cable below said pulley, and load-responsive means for paying out and reeling in said motion-compensating cable over said first pulley; and a winch cable issuing from said winch means and connected to said nozzle to support same in desired bottom-penetrating position, and a load-bearing pulley carried by said support and over which said winch cable is trained whereby the load imposed on said winch cable is imparted to said motion-compensating cable; said motion-compensating cable being of a length to position said load-bearing pulley to define a substantially horizontal winch cable section between such load bearing pulley and said winch means whereby minimally to travel said winch cable over said load-bearing pulley in response to paying out and reeling in of said motion-compensating cable.
Claim 3
Dependent Claim
46 words
A suction dredger assembly as defined in claim 1 including a frame mounted on said hull and projecting upwardly and outboard therefrom, said first pulley being carried by the outboard end of said frame whereby to provide a substantial length of said horizontal winch cable section.
Claim 4
Dependent Claim
47 words
A section dredger assembly as defined in claim 2 wherein said load-responsive means comprises a hydraulic piston-cylinder assembly and a pneumatic accumulator connected to the cylinder space of such assembly, a second pulley carried by said piston, and said motioncompensating cable being trained over said second pulley.
Claim 5
Dependent Claim
47 words
A suction dredger assembly as defined in claim 2 including second winch means mounted on said hull and a second winch cable issuing therefrom, said second winch cable being connected to said nozzle in spaced relation to the point of attachment of the first-mentioned winch cable thereto.
Claim 6
Dependent Claim
22 words
A suction dredger assembly as defined in claim 4 including a second wave motion compensating assembly associated with said second winch cable.
Claim 7
Dependent Claim
24 words
A suction dredger assembly as defined in claim 4 wherein said support carries a further pulley over which said second winch cable is trained.
Claim 8
Dependent Claim
47 words
A suction dredger assembly as defined in claim 1 wherein said load-responsive means comprises a hydraulic piston-cylinder assembly and a pneumatic accumulator connected to the cylinder space of such assembly, a second pulley carried by said piston, and said motion-compensating cable being trained over said second pulley.
Claim 9
Dependent Claim
47 words
A suction dredger assembly as defined in claim 7 including second winch means mounted on said hull and a second winch cable issuing therefrom, said second winch cable being connected to said nozzle in spaced relation to the point of attachment of the first-mentioned winch cable thereto.
Claim 10
Dependent Claim
22 words
A suction dredger assembly as defined in claim 8 including a second wave motion compensating assembly associated with said second winch cable.
Claim 11
Dependent Claim
24 words
A suction dredger assembly as defined in claim 8 wherein said support carries a further pulley over which said second winch cable is trained.
Claim 12
Dependent Claim
47 words
A suction dredger assembly as defined in claim 1 including second winch means mounted on said hull and a second winch cable issuing therefrom, said second winch cable being connected to said nozzle in spaced relation to the point of attachment of the first-mentioned winch cable thereto.
Claim 13
Dependent Claim
22 words
A suction dredger assembly as defined in claim 11 including a second wave motion compensating assembly associated with said second winch cable.
Claim 14
Dependent Claim
24 words
A suction dredger assembly as defined in claim 11 wherein said support carries a further pulley over which said second winch cable is trained.
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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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |