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7547159 |
Cradle boat lift storm protection system
An add-on structure for cradle boat lifts incorporating a piling brace that, when hurricane winds threaten, provides for the interconnection of the pilings to the cradle of a cradle boat lift. One...
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7534069 |
Programmable boatlift system with boat position sensor
A programmable boatlift system having a cable extending up from one end of a boatlift cradle, across to a shaft attached to a motor, and down to an opposite end of the boatlift cradle. The cable...
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7527014 |
Self-adjusting watercraft canopy
A self-adjusting watercraft canopy/cover assembly having a protective cover and a floating watercraft lift. The lift includes a watercraft lifting support and a float attached to the watercraft...
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7444952 |
Boat hull rinsing device
Fresh water rinsing of a boat hull of a boat occurs to remove contamination from the boat hull during each raising operation of the boat utilizing a boat lift. The contamination coming primarily...
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7419329 |
Semi-submersible dry-docking lift apparatus
A portable marine lift capable of multi-directional off-loading of yachts, ships, and other marine vessels at ground level to dry-dock them. It is compact and barge-like, and can be shared by...
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7377720 |
Boat lift
A boat lift supported completely from land adjacent to water in which a boat is to be operated for movement between storage and launching positions by the use of parallelogram linkage powered by...
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7367747 |
Adjustable and extending transport cradle for watercraft
A cradle assembly for moving and positioning a watercraft with respect to a support module. The cradle assembly comprises a plurality of horizontally varying cradle beams, a cradle wall extending...
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7354223 |
Mechanical ship lift
A system for lifting ships from one waterway to another waterway. A convex basin is constructed between the waterways and slidably receives a pair of inter-connected chambers movable transverse to...
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7338231 |
Boat hoist
A boat hoist utilizing a lightweight frame for support of a moving platform, which traverses the frame lifting the watercraft above the surface of the water. Minimal force applied to a single hand...
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7299758 |
Apparatus for transporting boat lifts
A boat lift transportation assembly for boat lifts is attachable to and removable from any cantilever boat lift. It comprises a steerable front lever that is positioned adjacent the front upper and...
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7293521 |
Hydraulic transom lift
Devices, apparatus and systems for raising and lowering watercraft such as personal watercraft, jet skis, inflatables from transoms on boats, from bulkheads and from docks, and for raising and...
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7273329 |
Hydraulic boat lift
An improved boat lift with an hydraulically-powered jack is provided with a locking mechanism, not only for maintaining the lift in its raised position when water pressure in the jack cylinder is...
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7267071 |
Apparatuses and methods useful for centering watercraft
Apparatuses and methods useful for helping to center watercraft—such as personal watercraft, ski boats, fishing boats, luxury boats, and the like—as they are docked (such as on trailers or...
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7246970 |
Shallow water watercraft lift
A watercraft lift with translating bunks supported by a base frame and having rollers mounted to the base frame to initially raises the watercraft upward when driven onto the lift sufficiently to...
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7226041 |
Winch assembly for a lift structure supportive of a recreational boat and related watercraft
An improved winch assembly adaptably configured for use with a new or existing lift structure suitably dedicated for short- and long-term storage of a recreational boat and related watercraft. The...
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7213526 |
Personal watercraft lift
The personal watercraft lift attachable to a mooring piling 6 for raising and lowering a watercraft from the water is disclosed. The lift has a cradle 1 attached to a mast 2 secured between...
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7207746 |
Remote boat lift switch
A novel watercraft lifting system for raising a watercraft to different positions relative to water and docks at least includes: at least one motorized winch adapted to be coupled via lift cables...
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7194971 |
Lift arrangement for boats
A lifting arrangement for lifting boats 2 off the water and for putting boats 2 onto the water is provided, which comprises a crane 8, 9, 27 and pallets or cassettes 16 to be arranged under...
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7182030 |
Kayak launcher
An apparatus is described for use in stabilizing a watercraft such as a kayak or canoe during boarding and exiting the watercraft. The apparatus includes a pair of spaced pontoons having...
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7168380 |
Boat lift systems
A module for a boat lift that combines features of both pontoon type and modular type constructions. Each module includes upper and lower pontoons, and can be connected in-line to form one side of...
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7156030 |
Boat lift
The pontoon boat lift system comprises a plurality of lifts mounted to an underside of a deck of the pontoon boat. Each lift comprises a leg that pivotally mounted to the underside of the deck and...
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7117805 |
Boat lift
A boat lift of the type that is mounted on the pilings of a boat slip or dock having four pilings placed in a rectangular arrangement is provided. The boat lift includes a cradle upon which the...
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7112007 |
Cradle for item transportation and storage, especially watercraft storage
A cradle assembly for moving and positioning an item with respect to a support module in a storage assembly with the item including a bottom. The cradle assembly comprises a plurality of cradle...
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7090431 |
Marine vessel lifting system with variable level detection
A marine vessel, typically a power boat, lifting system includes a remotely operated transmitter module, a receiver module, a level sensing module, a motor control module, and motors are integrated...
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7090055 |
Boat lift brake apparatus
A boat lift braking system includes a threaded shaft driven by the boat lift motor. A torsion tube disposed about the shaft carries an interiorly threaded nut that interengages the peripheral...
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7066683 |
Hydraulically operated low profile boat lift utilizing at least two pilings
An assembly for lifting a boat locatable adjacent a dock requires only two elongate vertically disposed pilings each having a lower end portion mounted into the floor of a body of water near the...
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7059803 |
Powered boatlift with electronic controls
A boatlift leg and frame structure utilizing a ball screw lifting mechanism driven by a reversible electric motor to raise and loser a boat support carriage. The raising and lowering operation of...
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7055449 |
Apparatuses and methods useful for centering watercraft
Apparatuses and methods useful for helping to center watercraft—such as personal watercraft, ski boats, fishing boats, luxury boats, and the like—as they are docked (such as on trailers or...
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7021861 |
Low profile floating lift for watercraft
A floating low profile watercraft lifting apparatus comprises a buoyant support apparatus and a watercraft lift attached to the buoyant support apparatus. Embodiments of the lift have first and...
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7001104 |
Boatlift and movable canopy assembly
A boatlift assembly having a boat cradle portion and a canopy portion. The canopy portion and boat cradle portion are movably coupled to cause the canopy portion to be automatically raised when the...
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6979149 |
Vessel transfer system and associated methods
A system for transferring a vessel between a first body of water having a first water level and a second body of water having a second water level includes a barrier separating the first body of...
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6976442 |
Variable range apparatus for watercraft lift
The invention generally relates to an apparatus and method that allows the lifting range of a four-bar, ground-based watercraft lift to be adjustable. More particularly, it relates to a...
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6964239 |
Modular floating boat lift
The present invention relates to a boat lift including a base structure a cradle connected with the base structure and configured to support a boat, and a plurality of pontoons connected with the...
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6955135 |
Self-contained drive-on boat docking apparatus, method and kit for creating such apparatus
An apparatus for lifting and storing a boat above water and particularly for shallow water, is made up of a pair of laterally spaced floats fixedly secured to inner ends of a pair of beams whose...
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6935807 |
Device for maintaining tension on lift cables
A device for preventing the tangling or crossing of lift cables by maintaining the tension on the lift cables. When the tension is removed from lift cables ( 4 ) by placing a boat in a water body,...
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6923133 |
Boatlift buoyancy system
A boatlift buoyancy system for assisting in maneuvering a boatlift while in the water by adding buoyancy to the boatlift. The boatlift buoyancy system includes a first tube and a second tube...
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6918345 |
Watercraft lifts and cable tie-off device for watercraft lifts
Novel cable tie-off devices for watercraft lift assemblies are disclosed and claimed herein. In certain embodiments, the cable tie-off devices are mounted onto the vertical pilings of the...
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6904857 |
Boat lift securing device
A device secured to a submersible portion of a boat lift to stabilize the submersible portion of the boat lift from unwanted lateral movement. Elongated pipe-like devices are attached to a...
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6848379 |
Adjustable boat lift stanchion
An adjustable stanchion assembly for a large capacity boat lift includes a pair of guides, namely mounting channels that are attached to respective sides of a cradle beam. Each mounting channel...
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6843191 |
Device and method for raising sunken objects
A device and method for raising sunken objects such as crates, small boats, vessels and ships including a platform equipped with winches to lower down a basket net and a frame supporting a...
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6837651 |
Gravity watercraft lift
In a lift for watercraft, a load translation mechanism balances load upon the actuator throughout the raising and lowering of watercraft, thereby greatly reducing load spikes. Embodiments of the...
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6834604 |
Transporting a ship over shallows of a watercourse
A laden ship is transported across a shallow portion of a watercourse by a submergible floating vessel, while the ship is lifted upwardly within the water by means of a vessel platform placed under...
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6830410 |
Bunk beam and bunk cushion apparatus for supporting a watercraft
The present invention is directed to an apparatus for supporting the hull of a watercraft using a flexible bunk beam and a convex cushion attached to the beam using locking elements. The beam has a...
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6830002 |
Lift for watercraft
A lift for watercraft has raised and lowered positions and is adapted to be mounted in a body of water. The lift has a substantially rectangular base with first and second pairs of vertical corner...
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6823809 |
Floating watercraft lift apparatus and method
The present invention is generally directed to a floating watercraft lift capable of raising and lowering a watercraft, and more particularly to a floating watercraft lift. In one embodiment, the...
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6823808 |
Boat hoist drive unit
A boat hoist including a vertical frame and a horizontally disposed movable platform, with the platform movable between a lowered and boat unload position and a raised, boat load position. A cable...
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6752096 |
Unitary plastic boat lift buoyancy tank
A plastic rotationally molded polyethylene buoyancy tank for boat lifts allows connection of steel to lengthwise grooves molded into each side of the buoyancy tank. Preferably, a plastic bulkhead...
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6709197 |
Large capacity boat lift
A large capacity boat lift includes a lift assembly mounted on each side of a boat supporting platform. Each lift assembly includes a support structure that carries a winder. A lifting cable is...
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6695533 |
Boat hoist hydraulic lift device
A hydraulic lift device for in-water boat hoists. A hydraulic cylinder is utilized to extend and retract a cylindrical rod with a vertical cross member at its end. Lift cables are attached to the...
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6612775 |
Hydraulic watercraft lift
A watercraft lift having hydraulic cylinders secured to lift towers and pivot axles located above the water surface to raise and lower a cradle that is secured to a surrounding support framework...
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