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Class 405/3 - Lifting


Subclass of Class 405 - Hydraulic and earth engineering
Definition: Method or apparatus wherein the vessel is raised or lowered
No. of patents: 235
Last issue date: 05/29/2012


          6  
NumberTitleIssue Date
4708081Stabilizer for floating and submersible structures
A series of simple detachable frames, fitted between a floating body and its' mooring support structure, will provide static stability to the floating body, by restraining all movements--except those occurring vertically under tides and buoyancy lift, and...
11/24/1987
4686920Cradle 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 includes a cradle having fore and aft transverse members u...
08/18/1987
4678366Boat lift
A boat lift includes a vertical H-beam driven into the floor of a body of water adjacent a pier. A shaft housing surrounds the H-beam and slides up and down it on rollers mounted within the channels defined between the opposed flanges and web of the H-bea...
07/07/1987
4653420Protective cover for boat hoist bumpers
A protective cover for fragile boat bumpers includes two sheets of relatively thin rubber having a sheet of criss-crossing fibers therebetween, the two rubber sheets being fused to each other. The cover is initially formed from a blank of sheet stock comp...
03/31/1987
4641595Boat lift with self aligning attachment
A boat lift with self aligning attachment. The lift used for raising and lowering a boat in a boat slip. The slip disposed between spaced apart parallel dock sides. The lift adjustable for various widths of boat slips along with adjustment for the vertica...
02/10/1987
4641996Side loading boat lifts
A boat lift mounted on a plurality of spaced masts secured in suitable foundations are provided to support an equal number of spaced rails extending angularly into the water to a depth below the draft of the boats to be elevated on the boat lift. A plural...
02/10/1987
4641596Boat dock and lift
A boat dock and lift is disclosed in which an upright frame is provided having a pair of spaced upright members and a horizontal cross member therebetween. A lift is movably mounted on the frame. The lift has a support engageable with a boat hull and a pa...
02/10/1987
4595313Boat hoist
A boat hoist has a frame with forward part including spaced upright posts, a rearward part including spaced upright posts, spaced to permit the passage of a boat therebetween, and an inclined track assembly attached to the frame between the pairs of space...
06/17/1986
4548152Maritime transportation and distribution system and method for bulk raw materials
A system for maritime transportation and distribution of bulk raw materials includes a series of containers, a carrier vessel, a container unloading dock for unloading material from each container, and a loading dock for loading material into each contain...
10/22/1985
4509446Drydocking 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 or lowering a vessel relative to a surface of a body of wat...
04/09/1985
4482268Boat lift
A boat lift supported on a single stanchion that includes a sleeve assembly mounted for slidable movement on the stanchion. A cross arm mounted on the sleeve assembly carries fork members which protrude out from the cross member. Blocks on the forks cradl...
11/13/1984
4473321Method of launching a large floatable object from a dock to water and delaunching it
A method of launching a large object such as a ship, barge or floatable offshore structure from a dock to water at a lower level than the dock surface by pushing the object over the dock edge, supporting the portion of the object extending past the dock e...
09/25/1984
4468150Adjustable cradle for supporting and stabilizing boats
The present invention entails an adjustable boat cradle for supporting a boat. There is disclosed a rectangular base frame structure with a plurality of adjustable vertical support assemblies strategically located and connected to the base frame structure...
08/28/1984
4432664Boat hoist
A boat hoist comprising a column, a tubular hoist slidable vertically, on said column, a boat cradle on said hoist, shore reinforcement means to anchor an upper part of said column to the shore, and a power unit connecting said column and hoist....
02/21/1984
4391550Gunnel 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 therebetween; a gunnel supporting system which comprises a plurality ...
07/05/1983
4381723Submersible 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 submersible platform having a buoyancy chamber formed therein....
05/03/1983
4329082Shiplift apparatus
The present shiplift apparatus has a horizontal lift platform with eight lift points (four on each side along the length of the platform). Four lift motors are provided, each operating a first cable for lifting the platform at a lift point which is locate...
05/11/1982
4318632Retractable wheel attachment for boat lift
An attachment for a boat lift to facilitate its placement and/or removal from a dockside location. A boat lift for small pleasure boats generally comprises a stationary framework which supports a movable boat supporting member and a winch or equivalent me...
03/09/1982
4280429Floating 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 side walls connected to the platform. The dock includes an ...
07/28/1981
4195948Hydraulic boat lift with regulating system therefor
An hydraulic boat lift utilizing readily available city water as the pressure fluid comprises one or more lift cylinders buried vertically under a body of water with the upper ends of the cylinders protruding into the water, a cradle supporting plate is c...
04/01/1980
4149469Log braking and stabilizing system for log flume ride
A braking and stabilizing system for a boat in a water channel, including boat lifting apparatus in the water channel engageable with the bottom of the boat, and including inflatable bags connected to the boat lifting apparatus for moving same upwardly to...
04/17/1979
4111144Ship's docking plant
A ship's docking plant includes a floating platform, partly enclosing a vertically displaceable docking member, providing large working areas around the same, when in raised position. The docking member is retained in relation to the platform by a vertica...
09/05/1978
4104082Lifting 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 containing the liquid medium through a linkage pivoted to the sid...
08/01/1978
4087979Drydock lifting platform
A lifting platform of a drydock has plural sections along its length pivoted together at transverse support beams supported at each end by winch cables; flotation chambers in other embodiments contain air or foamed resin and are always below the lowest wa...
05/09/1978
4084529Floating 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 which is adapted to be flooded so as to be positionable comp...
04/18/1978
4072119Vertical 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 water, the lift including two pairs of trunnion members affixe...
02/07/1978
4037421Float-on boat docking and lifting assembly
A float-on boat lift for pleasure craft has a substantially rectangular, open-ended support framework adapted to project outwardly of a dock facility or seawall, within which framework is pivotally secured, at one end, a float-on boat cradle. Winch mechan...
07/26/1977
4027492Transportable 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 non-supporting or retracted positions, and at least one f...
06/07/1977
4022027Marine structures
Marine structures adapted to be installed in relatively shallow bodies of water, such as for use in storing boats and in defining pier structures. The marine structures are arranged to be stored subjacent the water surface during winter months and more sp...
05/10/1977
4019212Boat cover apparatus
A boat cover apparatus that includes a boat lift assembly mounted on a main frame for lifting a boat above the level of the water, a cover assembly that includes a cover frame having a subframe of a size and shape that is greater than the maximum horizont...
04/26/1977
4018179Pontoon 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 system, and a frame which maintains the pontoons in fixed s...
04/19/1977
3991695Watercraft 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, air bladders to provide flotation, air control valves with a...
11/16/1976
3967570Floating 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 an inlet air pump on or near the parent structure and to ...
07/06/1976
3951087Boat 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 in the boat dock and a boat supporting cradle and flotati...
04/20/1976
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