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Browse by Category: Main > Transportation & Automotive
Class Information
Number: 114/48
Name: Ships > Vessel raising and docking > Floating dry docks > Elevators
Description: Floating drydocks having a platform upon which the hull of the vessel is supported and which is elevated or depressed upon the dock by buoyant action secured by emptying water-tanks or by hoisting.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8316786 Lift system for an elevator Nov. 27, 2012
8251608 Method of operating a shiplift Aug. 28, 2012
8251609 Method of operating a shiplift Aug. 28, 2012
8186908 Method of operating a shiplift May. 29, 2012
7866275 Retractable platform for transom of boat Jan. 11, 2011
7766577 Method of operating a shiplift Aug. 3, 2010
7527014 Self-adjusting watercraft canopy May. 5, 2009
7377720 Boat lift May. 27, 2008
7267066 Boat lift Sep. 11, 2007
7066776 Vessel provided with a propeller tunnel Jun. 27, 2006
7059803 Powered boatlift with electronic controls Jun. 13, 2006
7021861 Low profile floating lift for watercraft Apr. 4, 2006
6935807 Device for maintaining tension on lift cables Aug. 30, 2005
6823809 Floating watercraft lift apparatus and method Nov. 30, 2004
6769839 Stern-on mooring boat lift Aug. 3, 2004
6767004 Replacement motorized drive unit for boat lifts Jul. 27, 2004
6752096 Unitary plastic boat lift buoyancy tank Jun. 22, 2004
6598549 Boat lift Jul. 29, 2003
6591770 Boating lift Jul. 15, 2003
6584922 Portable boat lift Jul. 1, 2003
6547485 Stern-on mooring boat lift Apr. 15, 2003
6494155 Three piling boat lift Dec. 17, 2002
6470816 Watercraft lift assembly Oct. 29, 2002
6318929 Low profile lift for watercraft Nov. 20, 2001
6257159 Apparatus for raising and lowering boats in water Jul. 10, 2001
RE37061 Method of distributing loads generated between a ship and a supporting dry dock Feb. 20, 2001
RE36971 Method of determining and analyzing a ship's weight Nov. 28, 2000
6076478 Apparatus for raising and lowering boats Jun. 20, 2000
5988941 Boat lift cable lock apparatus Nov. 23, 1999
5941660 Modular watercraft support structure Aug. 24, 1999
5921195 Apparatus for coastal navigation and self rescue Jul. 13, 1999
5868514 Small water vehicle lift Feb. 9, 1999
5826528 Floating boat lift with retracting walkway Oct. 27, 1998
5795098 Modular watercraft support structure Aug. 18, 1998
5772360 Topless watercraft lifting apparatus with a differential gearing system Jun. 30, 1998
5755529 Boat lift May. 26, 1998
5749313 Watercraft lift May. 12, 1998
5701834 Lift for watercraft Dec. 30, 1997
5655850 Floating dock and boat lift Aug. 12, 1997
5628583 Small water vehicle lift May. 13, 1997
5613462 Lifting device Mar. 25, 1997
5590978 Elevator construction for the launching and recovery of personal watercraft Jan. 7, 1997
5544606 Boat lifting device Aug. 13, 1996
5531177 Roller construction for the launching and recovery of personal watercraft Jul. 2, 1996
5445101 System for spray washing boat hulls Aug. 29, 1995
5427471 Dock mounted boat hoist Jun. 27, 1995
5380143 Lightweight combination boat trailer and lift Jan. 10, 1995
5314263 Method of distributing loads generated between a ship and a supporting dry dock May. 24, 1994
5311970 Low-profile watercraft lift May. 17, 1994
5275505 Locking system for boat water-lifts Jan. 4, 1994

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