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5016685 |
Device for sliding and floating a boat lift
The present invention is a device for attachment to the leg of a boat lift, wherein the device has a housing with a lower surface of substantial area and an air entrapment volume therein; the air...
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5002000 |
Automatic leveler for boat lifts
A boat lift and leveler are provided in which the boat lift consists of a cradle supported by at least two pontoons laterally disposed beneath and fixed to the cradle. A leveler for the lift...
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4934298 |
Boat lift
A boat lift for raising and lowering a boat in a boat slip disposed between spaced apart parallel dock sides, the lift having a pair of cross members disposed perpendicularly to the dock sides and...
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4808028 |
Boat lift
A boat lift for installation in a boat well in a boat dock between the opposing sides of the boat well to lift a boat out of the water and lower a boat into the water. The boat lift comprises a...
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4782778 |
Inflation valve device
An inflation valve device which comprises a tee, a screwed bushing, a valve, and a hose having a hose adaptor. The inflation valve device is inserted in the hose of a pontoon type boat lift. The...
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4773346 |
Hydraulic boat lift
The present invention sets forth an hydraulically operated boat lift for lifting small boats upwardly out of a body of water by simultaneously supplying water pressure to four support posts...
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4763592 |
Radio controlled boat lift
A remote controlled boat lift comprises a remote transmitter unit that can selectively transmit one of two pre-determined RF signals, an up receiver and down receiver connected to operate a...
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4750444 |
Shiplifting device
A shiplifting device comprising a platform (1) submersible in a basin and having a deck (2) and a downwardly open lifting skirt (3) positioned below the platform. The shiplifting device supplies...
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4732102 |
Portable, self-contained, self-adjustable craft lift and wet/dry storage system
The invention comprises an improved system for raising, lowering and wet/dry storing of a craft supported thereon. This improvement includes pontoon means and structural frame means, respectively,...
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4691656 |
Floating dock construction
A floating dock comprises a base portion forming a floating pontoon and side portions made up of closed side boxes or tanks located on each side of said base and including detachable buoyancy boxes...
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4686919 |
Method for constructing large-scale marine structure
A method for constructing a large-scale marine structure, which comprises: providing, near a dock (2) of which at least one end faces the waters through a gate (6), a pond (5) having an end thereof...
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4686920 |
Cradle type boat lifts
A boat lift for a berth having permanently positioned piles in pairs spaced apart a distance sufficient to permit the boat to be berthed thereat to move between the paired piles while in the water...
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4615289 |
Floating dry dock
A dry dock having flotation chambers on two opposite sides of the load-carrying platform is submerged by flooding the flotation chambers. A reversible air pump is used to raise the dry dock by...
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4559894 |
Fiber-cement deck structure
A fiber-cement/plywood surface providing a preformed surface material for flooring, decking, walkways and roadways, more particularly for use with marine dock structures. The structure is formed by...
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4549835 |
Docking apparatus for ships
A docking apparatus comprises a drive truck adapted to run along a side wall of a dock approximately horizontally, a surface treating truck connected to the drive truck at all times and having a...
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4509446 |
Drydocking device having a moment resisting arrangement
The present invention relates to a drydocking method and apparatus including a moment resisting arrangement for maintaining the drydocking device in a substantially horizontal plane while raising...
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4409917 |
Rotating pontoon
A rotatable pontoon includes a floating cylinder provided with watertight compartments and having a hollow interior for receiving one or more vessels adapted to be overturned by rotation of the...
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4391550 |
Gunnel support system for use with a boat lift
In combination with a boat lift of the type having a plurality of opposed floatation tanks being affixed to a main structure and an horizontally disposed intermediate platform extending...
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4381723 |
Submersible drydock
The submersible drydock system of the present invention is one in which the buoyancy of the docking platform is altered to effect raising and lowering thereof. The submersible dock comprises a...
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4341174 |
Bow dock
A bow dock for use in a two-step docking method to allow the repair or recement of a sonar-dome rubber window on a variety of classes of full draft vessels in harbors and other water of limited...
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4280429 |
Floating boat storage dry dock
A floating dry dock for a boat comprising a tubular, boat-supporting platform made from a planar array of interconnected PVC conduit (or similar material) and a pair of vertical, buoyant, tubular...
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4276849 |
Ballast control system for submersible vessel
A submersible vessel, such as a barge, has a plurality of ballast compartments, each of which communicates with the exterior of the vessel through a separate riser, each terminating in an elongate...
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4267788 |
Self-stabilized elevator-float for drydocking or floating any type of vessel
A self stabilizing elevator float having a float body divided into a series of ballast tanks which are bailed or flooded to raise or lower the float body. A first pair of vertically displaceable...
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4155322 |
Apparatus for use in the jointing of floating ship sections
There is provided a floating caisson device for placing below and transversely to the bottom of a vessel hull in engagement with the lower portions of the hull side walls for providing a dry...
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4106637 |
Apparatus for and method of loading loose granular material from barges into ships
A floating transfer vessel provides exterior mooring for a ship adapted to receive loose granular cargo, and interior dry-docking for a plurality of barges loaded with loose granular material...
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4104082 |
Lifting device for use in a liquid medium
A lifting device for raising a platform out of a liquid medium and lowering it back into the liquid medium comprises a tank supporting the platform and connected to a side wall of the space...
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4084528 |
Working method of breaking up ship
The present invention relates to a working method of breaking up a ship, particularly a large ship, and is characterized by cutting the hull to shorten the length thereof as it is floating on the...
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4084529 |
Floating dry dock with lifting pontoons
A floating dry dock system comprises a main or central boxlike dry dock which for example may include a bottom and a side wall on each side and a lifting pontoon associated with the central unit...
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4072119 |
Vertical rising boat lift
A boat lift for lifting and storing boats out of the water, the lift being arranged for mounting in a boat well having opposed parallel vertical sidewalls spaced above the surface of a body of...
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4037423 |
Process for producing a connecting construction unit, such as a quay, container or platform
Process for producing a connecting construction unit, such as a quay, container or platform, without the use of docks. The first step involves erecting when floating on the sea a rigid raft...
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4027492 |
Transportable boat lift
A transportable boat lift including a framework having a base portion and a boat support portion mounted on the base portion for vertically directed movement between extended or boat supporting and...
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4018179 |
Pontoon system for supporting watercraft on a body of water
A pontoon system for supporting watercraft on a body of water having a submersible structure comprised of pontoons into which air is injected expelling the water therefrom to provide lift for the...
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3991695 |
Watercraft docking
The invention described and disclosed herein is a dry dock for boats which consists of a frame, formed supports for the boat hull, guides used in docking and lateral support for the docked boat,...
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3976022 |
Floating dry dock with buoyancy controlled air injection and venting system
The present disclosure is directed to lifting boats and barges within a dry dock by means of compressed air. The air is conducted from compressor through hose lines to open bottomed compartments of...
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3967570 |
Floating dock boat lift
A floating dock boat lift comprises a flat deck and a parent structure to which the deck is hinged. The free end of the deck over-lies a variable buoyancy chamber communicating by pipes or hoses to...
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3951087 |
Boat dry docking apparatus
The present invention relates to a boat dry docking apparatus for installation in a boat dock having substantially parallel sides. An elongated frame is provided adapted to be disposed horizontally...
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3916811 |
Tide compensation system
A method for automatically adjusting the ballast of the floating structure to compensate for changes in tide. This is accomplished by measuring the tide level with a float gauge to obtain a digital...
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3895592 |
Boat lift
One embodiment of a boat lift utilizes elongated, upendable floats of polyurethane material which project more deeply into the water when the floats are upright than when they are prone. Attachment...
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3878688 |
Bilge block reeving system
A system for reeving bilge blocks mounted on tracks or guides in a dry-dock arrangement is described having an unique cable system allowing for the single, simultaneous power source driving of...
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3857248 |
PLATFORM LEVELING DEVICE
A platform leveling device for use on apparatuses with hoisting means and the like and comprising platform suspension means for movably attaching the platform to the apparatus, leveling means...
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3811583 |
METHOD FOR MOVING AND LIFTING A SHIP SECTION
The movement of a section of a ship during assembly or repair is facilitated by cushions of pressurised fluid positioned beneath the section, lateral escape of the fluid being prevented by flexible...
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3786773 |
HYDROCARBON RETAINER FOR DRYDOCKS
A device placed on the floor of a drydock to encompass the damaged area of the hull of a ship drydocked therein, intercepts the flow of water from the area of the hull during drydocking to filter...
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3736898 |
DEVICE FOR CONTROLLING LIST AND LEVEL OF PONTOON
For a floating dry dock comprising a plurality of pontoons which are interconnected, means for leveling each pontoon. The apparatus has two interconnected systems, one of which corrects the list or...
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3688719 |
LIFT PONTOON AND DOCK
Pontoon structures, particularly a low-cost watercraft defining a plurality of isolated compartments vented at their tops with respect to each other and each compartment having an independent valve...
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3670682 |
METHOD AND APPARATUS FOR HANDLING SHIPS
A launching and retrieving facility for handling ships with an open ended, sectionally constructed drydock having one side of removable wingwalls. In an inshore position the drydock is ballasted to...
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3638437 |
FLOATABLE CASTING FOR WORKING ON HULL STRUCTURES BELOW WATER LEVEL
A floatable casing which is adapted to be positioned around two hull sections of a vessel to be joined while they are in the water includes two sections or portions which are hinged together...
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3610192 |
SYSTEM OF MOVING LADEN SHIPS THROUGH SHALLOW DRAFT-LIMITED WATERS
A method of lifting laden ships through shallow draft-limited waters comprising moving a specially constructed buoyant carrier capable of lifting a fully laden ship into position relative to fully...
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3603276 |
FLOTATION DOCKING FACILITY FOR SMALL CRAFT
A flotation docking facility for marinecraft slidable vertically of suitable bracket means with rise and fall of the tide and including pontoon-supported cradle means for lifting small craft clear...
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3468393 |
AIR CUSHION TRANSPORTING SYSTEM FOR HEAVY DUTY PALLET
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3465533 |
CARGO TRANSPORT APPARATUS USING AIR CUSHION SUPPORT
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