Ships – Vessel raising and docking – Floating dry docks
Patent
1979-02-22
1981-07-28
Blix, Trygve M.
Ships
Vessel raising and docking
Floating dry docks
114263, 114125, 405 3, B63C 102
Patent
active
042804299
ABSTRACT:
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 atmosphere venting system with its outlet above the water surface at all times connected to the base conduit platform and a freely positionable pump in fluid communication with the platform conduit array, which allows for the pumping of water into and out of the platform tubular array, which controls the depth level of the platform. The vertical side wall conduits are sealed and filled with air to add positive buoyancy to the platform to prevent it from sinking beyond a desired level. The diameter of each conduit of the ballasting tubular array for the platform is selected to accommodate boats of varying displacements. In operation, the device can be stored by floating adjacent a sea wall or the like. For loading a boat thereupon, the pump is initiated such that the platform conduits are flooded to sink the platform to a depth below the draft of the boat to be positioned in the water above the platform. After the boat is aligned directly over the platform, the pump is used to evacuate the water from the conduits in the platform, causing the entire platform to float, raising the boat therewith. The diameter of the side wall conduits (which are essentially filled with air and do not receive any ballast water) are selected in conjunction with the diameter of the platform conduit (which do receive ballasting water) such that the entire device can be adjustably buoyant to prevent deep submerging of the platform during the boat loading operation. Thus, the vertical side walls provide a variable buoyant force that increases as the platform submerges to control the depth of sinking of the dock.
REFERENCES:
patent: 1043411 (1912-11-01), Engstrand
patent: 3603276 (1971-09-01), DeLisle
patent: 3991695 (1976-11-01), McDonald
patent: 4018179 (1977-04-01), Rutter
Blix Trygve M.
Keen D. W.
LandOfFree
Floating boat storage dry dock does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Floating boat storage dry dock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Floating boat storage dry dock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-545272