Floating Dry Docks Patents (Class 114/45)
  • Patent number: 10227115
    Abstract: This invention relates to a submersible vessel for dry docking a vessel. The submersible vessel comprises a floating unit, a deck above the floating unit and a number of stabilizing towers arranged on the deck. The deck has a base, a sidewall along a perimeter of the base and a block provided within the sidewall and resting on the base, defining a cavity such that when the vessel is being docked onto the deck, a thruster of the vessel is above the cavity.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: March 12, 2019
    Assignee: Keppel Offshore & Marine Technology Centre Pte Ltd
    Inventors: Aziz Amirali Merchant, Woei Siong Chong, Shahnas Riza Ahmad, Anis Altaf Hussain, Murthy S. Pasumarthy, Chong Yong Huang
  • Patent number: 10183728
    Abstract: A method for conversion of a Very Large Ore Carrier (VLOC) to an FLNG vessel for offshore stranded gas reservoirs and at-shore or near-shore Liquefied Natural Gas (LNG) export terminals.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: January 22, 2019
    Assignee: Bechtel Hydrocarbon Technology Solutions, Inc.
    Inventor: John Kwangho Shin
  • Patent number: 10053196
    Abstract: Embodiments include a retrofit pontoon system including a pontoon, the pontoon having a pontoon body defining a first cavity, a retrofit assembly, the retrofit assembly including a first lateral tube, wherein the first lateral tube is sized to pass through a first aperture formed in the pontoon body and a selectively fillable container, where the first lateral tube is operably coupled with the selectively fillable container, a main tube, where the main tube is fluidly coupled with the first lateral tube, and a pump, the pump being coupled with the main tube such that operation of the pump selectively fills and drains water from the selectively fillable container, where filling the selectively fillable container lowers the profile of the pontoon in the water and emptying the selectively fillable container raises the profile of the pontoon in the water.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: August 21, 2018
    Inventor: Lawrence Donald Sporing
  • Patent number: 9604709
    Abstract: A floating boat lift having flotation tanks positioned under sides of a frame of the boat lift. Water flow is regulated so that tanks fill from near the center of the boat lift. A preferred hingeable connection of the boat lift to a bulkhead, along with lateral stabilization, participates in maintaining a generally horizontal attitude for the boat lift. Water is accepted into or pumped from the flotation tanks, allowing the frame of the boat lift to fall or rise relative to the surface of the water. One or more catwalks along the sides of the boat lift and connected to the bulkhead may float, but at a level that is independent of the boat lift frame.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: March 28, 2017
    Inventors: Sean A. Barnes, Michael W. Kirby
  • Patent number: 9284026
    Abstract: A boat lift transport device is disclosed for moving a boat lift in and out of the water. The transport device includes a floating platform depending from which are a plurality of booms, beams, or crane arms that extend outboard of the platform. Cables extending along and from the ends of the crane arms are attachable to the boat lift and can be reeled in or paid out by way of winch to move the boat lift between a suspended position and a lowered and resting position.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: March 15, 2016
    Inventor: Douglas Todd Harrell
  • Patent number: 9242704
    Abstract: A system of floating canal sections that connect end-to-end along a route to form a shipping canal and contain brine to prevent freezing. The canal sections of the present invention resemble floating dry-docks that are filled with the brine solution rather than with normal sea water. Sections can be floated into place and connected. Sections can be anchored to the sea floor. A typical section can be around 1000 feet long, 150 feet wide and about 50 feet deep. The sections can be manufactured anywhere and towed to the Arctic and connected. The use of brine prevents pollution if there should be a leak.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: January 26, 2016
    Inventor: Roland Lawes
  • Patent number: 9079641
    Abstract: A connector for a assembling members of a floating dock system comprises at least one post and a brace extending from the post. The post is shaped generally complimentarily to the shape of the socket, and comprises a generally convex midsection connected between a pair of generally falcate end portions. The post and brace define a flat, generally horizontal top surface to the connector. The dock system also includes a supplemental floatation system having a hollow floatation member body defining a chamber. The body includes a water port positioned to place the body interior in communication with water. An air port positioned vertically above the water port is placed in communication with a pump. A valve can be positioned between the chamber and the pump to selectively place the chamber in communication with the pump or to place the chamber in communication with the atmosphere.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: July 14, 2015
    Assignee: E-Z-DOCK, INC.
    Inventors: Dustin Imel, Curtis Downs, Dan Guthrie
  • Patent number: 9061749
    Abstract: A system and method of performing a dry-dock operation on a floating vessel, while the floating vessel may maintain operations. The dry-docking may be performed by another vessel, such as a semi-submersible transport vessel. The method may include: submerging the semi-submersible transport vessel, adjusting the positions of the vessels until the vessel is over the deck of the semi-submersible transport vessel, securing the vessel on the deck of the semi-submersible transport vessel, raising both vessels, performing the dry-dock operation, lowering the vessel back into the water, and unsecuring vessel from the semi-submersible transport vessel. The system may include suitable elements to perform the method.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: June 23, 2015
    Assignee: DOCKWISE SHIPPING B.V.
    Inventors: Hans Christiaan Leerdam, Leendert Poldervaart
  • Patent number: 8887653
    Abstract: An air direction device is submerged under a dry dock. The device imitates the orientation of the dry dock and is in communication with an air source, which pipes air under the device. The air travels to the most elevated portion of the device, which in turn directs the air into a depressed tank to correct dry dock imbalance.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: November 18, 2014
    Inventor: L. Keith Rogerson
  • Publication number: 20140251196
    Abstract: A free-floating, compact, self-stabilizing, self-monitoring, remote-controlled, shallow-water, solar, high-speed, air displacement watercraft lift constructed of polyethylene tanks, and non-metallic structure. This device provides vertical lifting by inflating 4 or more air tanks at once using a blower for each tank, pushing water out an exit hole on the bottom of each tank. Each tank has an electric valve for filling and another for exhausting air. Pairs of tanks are pivotally connected along the centerline, and pairs of tanks are connected with a union tube inside the axles. A monitoring system fills the air tanks if air leaks. The width of the lift is adjusted by adjusting the center bunk height, or by adding a spacer.
    Type: Application
    Filed: March 10, 2014
    Publication date: September 11, 2014
    Inventor: Kenneth E. Hey
  • Patent number: 8826839
    Abstract: A method for constructing an FPSO comprises (a) assembling and integrating a plurality of modules to form a module assembly for installation on the FPSO. In addition, the method comprises (b) supporting the module assembly with one or more ballast adjustable pontoons. Further, the method comprises (c) positioning the module assembly over a deck of a vessel after (a) and (b). Still further the method comprises (d) de-ballasting the vessel and/or ballasting the one or more pontoons to load the module assembly onto the deck of the vessel after (c).
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: September 9, 2014
    Assignee: Horton do Brasil Technologia Offshore, Ltda
    Inventors: Luiz Germano Bodanese, Edward E. Horton, III, James V. Maher, IV, Rafael Louzada Bodanese, Xavier Castello, Rodrigo M. R. Guimares
  • Publication number: 20140238287
    Abstract: A system and method of performing a dry-dock operation on a floating vessel, while the floating vessel may maintain operations. The dry-docking may be performed by another vessel, such as a semi-submersible transport vessel. The method may include: submerging the semi-submersible transport vessel, adjusting the positions of the vessels until the vessel is over the deck of the semi-submersible transport vessel, securing the vessel on the deck of the semi-submersible transport vessel, raising both vessels, performing the dry-dock operation, lowering the vessel back into the water, and unsecuring vessel from the semi-submersible transport vessel. The system may include suitable elements to perform the method.
    Type: Application
    Filed: April 24, 2013
    Publication date: August 28, 2014
    Applicant: DOCKWISE SHIPPING B.V.
    Inventors: Hans Christiaan Leerdam, Leendert Poldervaart
  • Patent number: 8770130
    Abstract: A dock-side cradle for providing a safe point of entry into and out of a personal watercraft such as a canoe or kayak launching and landing same. The cradle is trough-shaped and is open at each end, with a slight slope from one end to the other. Preferably the trough is defined by a plurality of support arms in spaced separation from one another which are connected to a pair of guiding elements. The cradle is adapted to be hingedly connected to a dock so that it can be positioned in the water for use, or rotated up onto the dock when not in use. The cradle is equipped with handrails connecting to the support arms and the support arms themselves may be extendable in order to accommodate varying water levels in relation to the dock. The cradle may be sold as a kit.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: July 8, 2014
    Inventor: Richard A Holmes
  • Patent number: 8627778
    Abstract: An elevated dock designed to lift boats out of the water when not in use is provided because storing a boat in the water exposes the boat to contaminants in both fresh and salt water. These contaminants attach to the bottom of the boat severely impeding the performance of the boat. Cleaning these contaminants off of the boat is time consuming and costly. Repeated cleaning of the boat will eventually result in damage to the hull. The elevated dock uses polymer to form adjustable pontoons that can easily be fitted to a variety of sizes and styles of boats. An embodiment of the elevated dock uses an articulated set of pontoons for lifting sailboats. The elevated dock can be deployed completely independent of the dock, eliminating unwanted stress to the dock. The unique gusset design, free-floating feature, articulated pontoon option coupled with the unique manner in which the pontoon length, width and volume can be adjusted for various boat types and sizes.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: January 14, 2014
    Inventors: Jeff Wright, Tod Wright, Scott Wheatley
  • Publication number: 20130233224
    Abstract: A method for constructing an FPSO comprises (a) assembling and integrating a plurality of modules to form a module assembly for installation on the FPSO. In addition, the method comprises (b) supporting the module assembly with one or more ballast adjustable pontoons. Further, the method comprises (c) positioning the module assembly over a deck of a vessel after (a) and (b). Still further the method comprises (d) de-ballasting the vessel and/or ballasting the one or more pontoons to load the module assembly onto the deck of the vessel after (c).
    Type: Application
    Filed: August 30, 2012
    Publication date: September 12, 2013
    Applicant: HORTON DO BRASIL TECHNOLOGIA OFFSHORE, LTDA.
    Inventors: Luiz Germano Bodanese, Edward E. Horton, III, James V. Maher, IV, Rafael Louzada Bodanese, Xavier Castello, Rodrigo M.R. Guimares
  • Publication number: 20130180441
    Abstract: A system and method in which a buoyant central docking station captures, lifts and couples one or more other sea vessels is disclosed, wherein a flexible, modularized production system is quickly realized on a cost effective basis. The capabilities of a number of older, less expensive, readily available vessels are combined to achieve an effective FPSO substitute that allows lower producing fields to be explored and produced in a profitable manner. The time horizon between initiation and consummation of field operations is reduced, and older vessels that might otherwise be scrapped or retired are again made useful and seaworthy in a safe and profitable exploration and production environment.
    Type: Application
    Filed: March 6, 2013
    Publication date: July 18, 2013
    Applicant: ANADARKO PETROLEUM CORPORATION
    Inventor: Anadarko Petroleum Corporation
  • Patent number: 8256366
    Abstract: A boatlift for use with small, manual or paddle or oar powered watercraft (such as canoes and kayaks) is provided with a guide rails on either side of the boat lift, which can be utilized by a boater to propel or urge his/her watercraft onto the boatlift. In addition, that boatlift is provided with an entrance/exit assist member which can be used by boaters with impaired leg function to enter and exit from the watercraft.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: September 4, 2012
    Assignee: E-Z-Dock, Inc.
    Inventors: Dustin Imel, David J Sturtevant
  • Patent number: 8221028
    Abstract: A boat lift includes a lift frame rotatably mounted to a boat dock. A lower trolley with a buoyant body slides on the frame. An upper trolley slides on the frame and is engaged by the boat as it propels itself forward onto the frame when the latter is in a boat receiving position. A linkage connected between the trolleys causes the lower trolley and the buoyant body to slide rearwardly underneath the boat to rotate the lift frame into a final docking position in which the boat is out of the water. The upper trolley is locked into position, thus holding the lower trolley in position through the linkage. The boat is launched by releasing the upper trolley lock, which permits the upper trolley to slide rearwardly, with concomitant forward sliding movement of the lower trolley that permits the frame to rotate and launch the boat from the frame.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: July 17, 2012
    Assignee: Propulsion, Gas Turbine, and Energy Evaluations, LLC
    Inventor: J. Walter Smith
  • Patent number: 8155812
    Abstract: This invention relates to a ready system for providing floating dock deflection management systems increasing operations efficiency and providing accurate, safe control to eliminate man-made accidents. This invention also relates to a ready system for providing floating dock deflection management systems providing information to safely operate at least one dry dock without over-stressing the metallurgy of the dry dock.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: April 10, 2012
    Inventors: David Q. Smith, Alan P. LeVezu
  • Publication number: 20110277675
    Abstract: A floating dock including a submersible platform including at least one buoyancy tank wherein the buoyancy tank has a plurality of compartments each of which has a permanently open vent through which water is freely flowable into and out of the compartment and an inlet which enables air to be expelled from the compartment into the atmosphere or enables compressed air to be supplied to the compartment via a non return valve which causes water within the tank to be forced out via the vent, thereby increasing the buoyancy of the tank. The vent does not have any valves associated with it and is permanently open to the sea. As a result the floating dry dock of the present invention may be lowered and raised faster than conventional dry docks which rely on valved vents to control entry and exit of water into and out of their buoyancy tanks.
    Type: Application
    Filed: November 17, 2009
    Publication date: November 17, 2011
    Applicant: WELCOME INN INVESTMENTS NV
    Inventors: Donald Scot Thom, Richard Peter Bayley
  • Patent number: 7966958
    Abstract: The present invention relates to a pontoon lift mechanism includes: a plurality of PVC tubing aligned in parallel; a portion of the plurality of PVC tubing including air filled PVC tubes; a portion of the plurality of PVC tubing including water filled PVC tubes; and an inlet valve and outlet valve provided for each PVC tube. The air filled PVC tubes and water filled PVC tubes abut each other and alternate in the parallel alignment of the tubes. The pontoon lift mechanism also includes a means to fill the air filled PVC tubes and the water filled PVC tubes, where said means to fill includes an air hose extending from an air supply valve and a water hose extending from a water supply valve.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: June 28, 2011
    Inventor: Dan Cauley
  • Publication number: 20110146554
    Abstract: An elevated dock designed to lift boats out of the water when not in use is provided because storing a boat in the water exposes the boat to contaminants in both fresh and salt water. These contaminants attach to the bottom of the boat severely impeding the performance of the boat. Cleaning these contaminants off of the boat is time consuming and costly. Repeated cleaning of the boat will eventually result in damage to the hull. The elevated dock uses polymer to form adjustable pontoons that can easily be fitted to a variety of sizes and styles of boats. An embodiment of the elevated dock uses an articulated set of pontoons for lifting sailboats. The elevated dock can be deployed completely independent of the dock, eliminating unwanted stress to the dock. The unique gusset design, free-floating feature, articulated pontoon option coupled with the unique manner in which the pontoon length, width and volume can be adjusted for various boat types and sizes.
    Type: Application
    Filed: December 17, 2010
    Publication date: June 23, 2011
    Inventors: Jeff Wright, Tod Wright, Scott Wheatley
  • Publication number: 20110135390
    Abstract: A system and method in which a buoyant central docking station captures, lifts and couples one or more other sea vessels is disclosed, wherein a flexible, modularized production system is quickly realized on a cost effective basis. The capabilities of a number of older, less expensive, readily available vessels are combined to achieve an effective FPSO substitute that allows lower producing fields to be explored and produced in a profitable manner. The time horizon between initiation and consummation of field operations is reduced, and older vessels that might otherwise be scrapped or retired are again made useful and seaworthy in a safe and profitable exploration and production environment.
    Type: Application
    Filed: January 28, 2011
    Publication date: June 9, 2011
    Applicant: ANADARKO PETROLEUM CORPORATION
    Inventors: Keith K. Millheim, Eric E. Maidla, Charles H. King
  • Patent number: 7921604
    Abstract: An aluminum-foam structural housing unit that is storm-proof, self-contained, and built to withstand natural disaster conditions resulting from hurricanes, tornadoes, earthquakes, and fire, and then assist its inhabitants immediately thereafter when interruptions in public utility system service can be experienced. The combined use of aluminum alloy and foam as its building materials gives the unit its great strength, as well as the versatility needed to face natural disaster conditions while providing absolute resistance to heavy winds, flooding, earthquake and fire. Since the unit is buoyant, during flooding conditions it lifts from the ground and is guided by vertical poles to maintain a horizontal orientation. The unit also automatically disconnects from public utility systems as lifting occurs, and it then provides its inhabitants with self-contained sources of water, electrical energy, and sewage management. Thus, the unit is designed to adjust to the flow of nature, instead of working against it.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: April 12, 2011
    Inventor: Siaosi Kaihau Lino
  • Patent number: 7823523
    Abstract: A Portable Dry Dock (PDD) system designed for commercial servicing of recreational vessels (RVs) in inland waterways (IW). This PDD is disassembled and transported from one IW to another. This PDD was designed specifically to improve the efficiency in the most typical maintenance jobs in RVs. The convenient layout of the equipment and the closed environment of the PDD reduce the execution time and improve the working conditions. The isolated environment created by the superstructure, deck and roof of the PDD significantly reduces the environmental impact. The isolated environment inside the PDD is controlled in temperature and humidity. The air filtering and waste water collection systems remove dust and other substances coming from the operation, stopping pollutants from getting into the IW.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: November 2, 2010
    Inventor: Marcelo Alejandro Perez
  • Patent number: 7527014
    Abstract: 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 lifting support for supporting the watercraft lifting support on a body of water. The float is movable to selectively lift and lower the watercraft lifting support relative to the body of water along a first path of movement. The lift further includes an assembly which causes the protective cover to move along a second path of movement different from the first path in response to movement of the float.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: May 5, 2009
    Assignee: Sunstream Corporation
    Inventors: Kenneth E. Hey, Bryce M. Kloster
  • Publication number: 20090101054
    Abstract: A Portable Dry Dock (PDD) system designed for commercial servicing of recreational vessels (RVs) in inland waterways (IW). This PDD is disassembled and transported from one IW to another. This PDD was designed specifically to improve the efficiency in the most typical maintenance jobs in RVs. The convenient layout of the equipment and the closed environment of the PDD reduce the execution time and improve the working conditions. The isolated environment created by the superstructure, deck and roof of the PDD significantly reduces the environmental impact. The isolated environment inside the PDD is controlled in temperature and humidity. The air filtering and waste water collection systems remove dust and other substances coming from the operation, stopping pollutants from getting into the IW.
    Type: Application
    Filed: September 24, 2008
    Publication date: April 23, 2009
    Inventor: Marcelo Alejandro Perez
  • Patent number: 7509916
    Abstract: A marine dock and integrated boat lift include a dock portion having a framework that carries a plurality of float elements. A lift is mounted within the framework between an upper walking surface of the dock and the underlying body of water.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: March 31, 2009
    Inventor: Ben Nelson, Jr.
  • Patent number: 7503274
    Abstract: The mobile floating lift is disclosed and may include a cradle dimensioned and adjustable to conform to, engage, lift and store a watercraft, wherein the cradle has at least a first end and a second end opposite the first end, at least two floatation assemblies, each spaced along separate axes, each of the at least two floatation assemblies having at least one floatation device, wherein the cradle is spaced between the at least two floatation assemblies pivotally attached near the first end of the cradle at least one pivot point, and at least one drive mechanism operatively connected to at least one of the at least two floatation assemblies and to the cradle for moving the cradle in an arcing vertical direction toward the at least two floatation assemblies, wherein the at least one drive mechanism operates to raise the second end of the cradle in an arc relative to the pivot point.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: March 17, 2009
    Inventors: Ronald T. Weed, Richard W. Rapp
  • Patent number: 7500439
    Abstract: The present invention concerns a buoyant fluid comprising a liquid and a plurality of rigid containers, the rigid containers each having a sealed void containing a gas. A particular use is to transport heavy objects subsea. The gas in the rigid containers provides buoyancy but does not compress at different subsea pressures. Therefore effective buoyancy control subsea is much easier compared to known methods. For certain embodiments, a secured supply container may be provided subsea to supply the liquid and rigid containers to a lifting device having a container therefor and an attachment mechanism secured to the object being transported. The liquid is preferably a biodegradable substance such as vegetable oil.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: March 10, 2009
    Assignee: Ythan Environmental Services Ltd.
    Inventor: Patrick Joseph Collins
  • Publication number: 20080306642
    Abstract: The present invention disclosure relates to boat lifts and in particular a boat lift preferably employing to a remote controlled, position sensing and auto-leveling boat lift controller. The controller is capable of monitoring the height of the lift relative to the surface of the water and the angle of the lift relative to horizontal level. The controller filters out the effects of wave action or other interfering conditions, obtaining precise measurements of the height and angle. The controller continuously maintains both height and angle at the position set by the operator.
    Type: Application
    Filed: June 7, 2008
    Publication date: December 11, 2008
    Applicant: Aqualogic Marine, Inc.
    Inventors: John A. Figura, Matthew L. Narzinski
  • Patent number: 7421963
    Abstract: The watercraft dry storage assembly includes two generally cylindrical bladders that are inflated to lift a boat from the water and hold the hull in a raised position. Each bladder is made from a scrim encased in a flexible plastic. The scrim is substantially non-stretchable. Air fills the bladders until each inch of bladder material is tensioned in a direction parallel to a long axis of the bladder by a force of at least 5 pounds and in a transverse direction by a force of at least 10 pounds. A plurality of straps encircle each bladder. Rings on the ends of each strap are connected by coupler assemblies to secure both bladders together. The straps are attached to the bladders in selected positions along the length of the bladders.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: September 9, 2008
    Inventor: Remi L. Victor
  • Publication number: 20080087208
    Abstract: An apparatus for protecting the hull of a watercraft includes a support. A submersible barrier assembly is connected to the support and is displaceable with respect to the support between an inoperative, submerged position and an operative surface position. The barrier assembly is configured to cover at least a submerged portion of the hull in the operative position. A displacement mechanism is operable on the barrier assembly to displace the barrier assembly between the inoperative and operative positions.
    Type: Application
    Filed: October 17, 2006
    Publication date: April 17, 2008
    Inventor: Allan Barber
  • Patent number: 7325503
    Abstract: A lift for a watercraft has plastic reinforcing brackets which engage in pockets in the thin-walled plastic floatation tanks of the lift and which provide mounting flanges at the top surfaces of the floatation tanks for abutment with mounting pads which connect to the watercraft support frame. The brackets are engaged on the floatation tanks and the pads overlap and are bolted to the plastic brackets, so that the pads are locked against but not bolted to the floatation tanks. Thus, the integrity of the tanks is not compromised by assembly-associated openings through the tank walls. Furthermore, the bolts are above the tank waterlines so that no corrosive material is disposed below the waterlines.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: February 5, 2008
    Assignee: Hydro Hoist International, Inc.
    Inventor: Michael D. Vaughn
  • Patent number: 7143868
    Abstract: An underdeck pontoon lift system for supporting pontoons of various sizes in a stable manner. The underdeck pontoon lift system includes a base structure, a plurality of front lifting jacks and a rear lifting jack pivotally attached to the base structure, a support bed pivotally attached to the lifting jacks, a front structure extending from the base structure, and an elevating unit for manipulating the lifting jacks. The lifting jacks preferably have an inverted U-shaped base member with a pair of support members extending upwardly, where the width of the support members is less than the width of the base member. The lifting jacks are preferably attached to cross members that extend between side members of the base structure. The support bed preferably has a rear tapered portion for assisting in the loading of a pontoon.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: December 5, 2006
    Inventors: Michael T. Christen, Mark C. Christen
  • Patent number: 7096809
    Abstract: The watercraft dry storage assembly includes a cylindrical port bladder and a cylindrical starboard bladder. Both bladders are made from sheet material with a substantially non-stretchable polyester or nylon scrim encased in a poly vinyl chloride plastic, a urethane plastic or a mixture of poly-vinyl chloride and urethane. The bladders are attached to each other. A blower system blows air into the bladders to lift a boat hull out of the water. The blower system also sucks air out of the bladders to lower the boat into the water. A guide system indicates the location of the bladders under the water and guides the bladders as they are inflated. One or more envelopes with open tops are attached to the bladders if required and receive rudders, keels and propellers as they are raised by the bladders. After the open tops are raised above the water, water in the envelopes are pumped out by a pump.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: August 29, 2006
    Inventor: Remi L. Victor
  • Patent number: 6955135
    Abstract: 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 outer ends are pivotally secured to a dock, a set of fixed posts, a bulkhead or other fixed structure. The floats and beams form a well having an entrance away from which is mounted a rear bar and further away from the rear bar and on the beams is mounted a front bar. A boat mounting frame onto which a boat can be driven under its own power is pivotally mounted on the rear bar such that after a boat is loaded on the boat mounting frame, the frame can be tilted such that its leading end engages the front bar and maintains the boat above the water in a position suited for storage. A method of forming the apparatus and a kit containing the apparatus is also disclosed.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: October 18, 2005
    Inventor: James F. Wilkins
  • Patent number: 6926468
    Abstract: A portable flotation platform is disclosed for use in supporting a load of equipment, hunting dogs, or personnel above the level of a body of water. The platform includes a deck constructed to be of an overall density less than that of water and sized so as to support the load above the level of the water. An anchor extends down to the bottom of the water and up to the deck to hold the deck on station in the water. The deck is provided with a carrying attachment to facilitate the user carrying the deck to a point of deployment at the water. The deck further has anchor storage for carrying the anchor along with the deck to the point of deployment.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: August 9, 2005
    Inventor: James Francis Sehl
  • Patent number: 6923133
    Abstract: 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 attachable to the horizontal support beams of a boatlift that are capable of receiving of volume of air and/or water. A first hose and a second hose are fluidly connected to the first tube and second tube respectively for delivering pressurized air when buoyancy is desired for the boatlift. The first tube and the second tube also have a first aperture and a second aperture respectively within lower portions thereof for allowing for the draining of water when pressurized air is input into the tubes.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: August 2, 2005
    Inventors: Jay Ross, Lance Hendrickson
  • Patent number: 6857821
    Abstract: A device for lifting a seagoing construction such as a drilling rig, which device comprises one or more floater bodies, one or more beam-like lifting members supported movably on a floater body and running parallel or practically parallel to each other, wherein the or each lifting member is supported on at least two support points of the floater body, at least one of which is adjustable in height direction, and the end part of the lifting member lying outside the floater body has a pressure point which is in contact with the construction for lifting, this such that the seagoing construction can be easily connected to the end of the lifting member without this construction suffering damage as a result of the sea swell.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: February 22, 2005
    Assignee: Excalibur Engineerng B.V.
    Inventors: André Luur Jan Steenhuis, Martin Arie Schenkel
  • Patent number: 6834604
    Abstract: 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 the hull. The vessel is preferably comprised of a multiplicity of rigid U-shape, separately floodable, buoyant sections, including end sections, which have self-propulsion. The several sections are pivotably interconnected, as by hinge assemblies, so the transporter platforms adjust to major up or down bends along the length of the hull, during lifting. The platforms are surfaced with a layer of resilient deformable material, or movable blocks, to accommodate local irregularities in the bottom of the ship.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: December 28, 2004
    Assignee: Seaworthy Systems, Inc.
    Inventors: David A O'Neil, William A. Wood
  • Patent number: 6823809
    Abstract: 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 watercraft lift includes a pair of longitudinally extending and approximately parallel floats with an apparatus for supporting and lifting the watercraft positioned between the floats. When the watercraft lift is positioned in a lowered position, the apparatus is submerged and each of the floats is in a first orientation and partially submerged. The apparatus may then be activated to move the watercraft lift to a raised position by moving the floats downwardly and inwardly towards the watercraft, so that the floats become further submerged in the water. The buoyancy of the submerging floats thus lifts the lift apparatus and the watercraft above the water surface.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: November 30, 2004
    Assignee: Sunstream Corporation
    Inventor: Kenneth Hey
  • Patent number: 6783304
    Abstract: A weather resistant dock walkway comprises a dock walkway substructure in combination with a plurality of elongated planks each with a first and second opposite ends. The planks are rotatable between a horizontal position and a vertical position, and are arranged side-by-side. The first and second opposite ends of each plank are attached to the opposite ends of the substructure. The planks are responsive to contact with a body of water such that the planks rotate from a horizontal position to a vertical position to enable surging water to circulate freely between the vertical planks to prevent surge damage to the weather resistant dock walkway. A ratchet system can be used to reversibly lock the planks in a vertical position.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: August 31, 2004
    Inventor: Julian C. Lee
  • Patent number: 6769839
    Abstract: In a lift for mooring a boat stern-on, a pair of horizontally spaced guide members is fixed to the sea wall. A frame is fixed to a pair of substantially parallel hydro-pneumatic buoyancy tanks to provide a flotation platform for supporting the hull of the boat. The stern end of each of the tanks is connected to the guide members. The guide members limit movement of the platform away from the sea wall and along the sea wall but permit vertical reciprocation of the stern ends of the lift tanks in unison and restrict the lift from listing during operation.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: August 3, 2004
    Assignee: HydroHoist International, Inc.
    Inventor: Todd A. Elson
  • Patent number: 6752096
    Abstract: 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 is formed within the tank during its molding process. A segment of framing steel is bracketed between a pair of inwardly tapered compressible opposed grips. The compressible grips each have outwardly tapered slots with mating tapered rigid inserts. With the inserts partially seated on the grips, the grips are slipped lengthwise or pressed laterally into their respective grooves. Bolts extending through the grips into threaded holes in the inserts are tightened to pull the grips over their tapered inserts. This spreads and compresses the grips in their respective grooves, locking the brackets and connecting steel in place on top of the tanks.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: June 22, 2004
    Assignee: Hydrohoist International, Inc.
    Inventors: Todd A. Elson, Kelly D. Peyton
  • Patent number: 6752097
    Abstract: 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 is formed within the tank during its molding process. A segment of framing steel is bracketed between a pair of inwardly tapered compressible opposed grips. The compressible grips each have outwardly tapered slots with mating tapered rigid inserts. With the inserts partially seated on the grips, the grips are slipped lengthwise or pressed laterally into their respective grooves. Bolts extending through the grips into threaded holes in the inserts are tightened to pull the grips over their tapered inserts. This spreads and compresses the grips in their respective grooves, locking the brackets and connecting steel in place on top of the tanks.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: June 22, 2004
    Assignee: HydroHoist International, Inc.
    Inventors: Todd A. Elson, David L. Waltrip
  • Patent number: 6682804
    Abstract: A fender protective structure having an inner layer of resilient plastic/elastomer alloy having a delayed elastic response, having voids to reduce weight and allow the inner layer to expand upon impact. A relatively hard top layer is also provided.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: January 27, 2004
    Assignee: Duramax Marine, LLC
    Inventor: Roy Lee Orndorff, Jr.
  • Publication number: 20030217681
    Abstract: A portable dock structure for the temporary docking of boats, particularly of pontoon or houseboats and the like, the dock structure having a gangway having an anchor end adapted for securing the structure to the shore of a body of water and having a boat end adapted for affixing to a boat, a flotation device on the gangway adjacent the boat end whereby the boat end can be first floated from the shore out into the water and the anchor end then secured to the shore and then the boat end affixed to a boat to thereby provide a stable passageway between the boat and the shore.
    Type: Application
    Filed: June 5, 2003
    Publication date: November 27, 2003
    Inventor: James E. Funk
  • Patent number: 6648554
    Abstract: A portable flotation platform is disclosed for use in supporting a load of equipment or hunting dogs above the level of a shallow body of water. The platform includes a deck constructed to be of an overall density less than that of water and sized so as to support the load above the level of the water. An anchor extends down to the bottom of the water and up to the deck to hold the deck on station in the water. The deck is provided with a carrying attachment to facilitate the user carrying the deck to the point of deployment on the water.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: November 18, 2003
    Inventor: James Francis Sehl
  • Patent number: 6547485
    Abstract: In a lift for mooring a boat stern-on, a pair of horizontally spaced guide members is fixed to the sea wall. A frame is fixed to a pair of substantially parallel hydro-pneumatic buoyancy tanks to provide a flotation platform for supporting the hull of the boat. The stern end of each of the tanks is connected to the guide members. The guide members limit movement of the platform away from the sea wall and along the sea wall but permit vertical reciprocation of the stern ends of the lift tanks in unison and restrict the lift from listing during operation.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: April 15, 2003
    Assignee: Hydrohoist International, Inc.
    Inventor: Todd A. Elson