Hydraulic and earth engineering – Marine vessel portage – launching – or removing
Reissue Patent
1998-11-24
2001-02-20
Taylor, Dennis L. (Department: 3673)
Hydraulic and earth engineering
Marine vessel portage, launching, or removing
C114S048000, C405S003000, C414S678000
Reissue Patent
active
RE037061
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a method of distributing the loads generated between a ship and a supporting structure on which the ship is resting.
The invention has particular efficacy in the field of dry docking marine vessels and is described in detail herein in that context.
DESCRIPTION OF THE PRIOR ART
In U.S. Pat. No. 3,073,125 now expired, applicant for a patent for the present invention disclosed and claimed a dry dock which for operation was placed under a ship which lay between two quays, and was then raised by hoist winches on the quays, along with the ship, to a height which brought the ship to quay level. The dry dock included rail mounted trolleys by means of which the ship could be moved onto the quay.
U.S. Pat. No. 4,087,979 also owned by applicant and still in force, discloses and claims improvements to the dry dock of 3,073,125, inter alia by way of enabling construction in module form off site, and articulating the structure at positions along its length, so as to reduce the adverse effect of local load concentrations on the ships' hull. There are a total of one hundred and sixty eight such dry docks in operation in sixty two countries.
Both types of dry dock are operated by hoist winches which in turn are driven by a.c. synchronous motors, so as to ensure lift synchronism. Control is computerised and includes manual override.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a mode of distributing the loads experienced by a ship when on a dry dock of the kind disclosed and claimed in the aforementioned patents which should be regarded as being incorporated herein by virtue of this reference thereto.
The apparatus used in practising the method provides hoist load indicating means in the load path of each hoist winch, in a system of hoist winches on opposing quays.
The load indicating means is of the kind which generates electrical signals when acted on by a said load.
Means are provided which receive and condition the signals and further means are provided which receive the conditioned signals and use them to react upon the system and thereby control it.
The further means also uses said signals to generate visual displays of load magnitudes, current magnitudes, weight distributions and total weights, as experienced by the hoist winches.
REFERENCES:
patent: 2401878 (1946-06-01), McClain
patent: 3073125 (1963-01-01), Pearlson
patent: 3289868 (1966-12-01), Miller
patent: 3327997 (1967-06-01), Zenke
patent: 3429288 (1969-02-01), Suit
patent: 3777691 (1973-12-01), Beale
patent: 3916811 (1975-11-01), Fromnick
patent: 4053138 (1977-10-01), Mattson
patent: 4087979 (1978-05-01), Pearlson
patent: 4251974 (1981-02-01), Vanderklaauw
patent: 4329082 (1982-05-01), Gillis
patent: 4661749 (1987-04-01), Finkbeiner
patent: 4686920 (1987-08-01), Thomas
patent: 4763592 (1988-08-01), Russ
patent: 5020463 (1991-06-01), Franklin
patent: 5051027 (1991-09-01), Horton
patent: 2132142 (1973-01-01), None
patent: 3629244 (1987-03-01), None
patent: 0082677 (1983-06-01), None
patent: 58-36998 (1983-03-01), None
patent: 468833 (1975-12-01), None
Letter, May 1, 1986 From Hydraudyne Systems & Engineering B.V. to a Mr. Michael Pomeroy (14 pages).
Letter, May 23, 1989 From Hydraudyne Systems & Engineering B.V. to a Mr. Michael Pomeroy (17 pages).
Hydraudyne Document dated Apr. 12, 1989 (4 pages).
Excerpt, Luzon Shiplift Manual, undated (1 page).
Cayocca Iver Duane
Green George Montague
Stokoe Geoffrey Atrill
Pillsbury Madison & Sutro LLP
Syncrolift, Inc.
Taylor Dennis L.
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