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Class Information
Number: 405/4
Name: Hydraulic and earth engineering > Marine vessel portage, launching, or removing > Dry dock
Description: Method or apparatus (a) for exposing the hull of a vessel to the atmosphere by placing the vessel into an artificial basin formed in or on the earth, which basin is capable of having substantially all the water removed therefrom, (b) for constructing such a basin, or (c) for subcombinations peculiar thereto.










Sub-classes under this class:

Class Number Class Name Patents
405/5 Fabrication 3
405/6 Gate 5
405/7 Vessel support (e.g., bilge or keel block) 45


Patents under this class:

Patent Number Title Of Patent Date Issued
8678703 Watercraft lift Mar. 25, 2014
7503274 Floating lift for watercraft Mar. 17, 2009
7419329 Semi-submersible dry-docking lift apparatus Sep. 2, 2008
7413378 Boat lift Aug. 19, 2008
7401999 Pre-cast deck and dock system Jul. 22, 2008
7090431 Marine vessel lifting system with variable level detection Aug. 15, 2006
7059803 Powered boatlift with electronic controls Jun. 13, 2006
7033107 Pre-cast deck, dock steps and dock system Apr. 25, 2006
6955135 Self-contained drive-on boat docking apparatus, method and kit for creating such apparatus Oct. 18, 2005
6612775 Hydraulic watercraft lift Sep. 2, 2003
6602022 Drive-on boat docking apparatus, method and kit for creating such apparatus Aug. 5, 2003
6585452 Organic composition for erosion control and barrier formation Jul. 1, 2003
6526706 Beach stairway Mar. 4, 2003
6427395 Elongated covering member of extruded plastic suitable for flooring, decking, seating, and like uses Aug. 6, 2002
RE36971 Method of determining and analyzing a ship's weight Nov. 28, 2000
5927222 Drydock pollution control system and process Jul. 27, 1999
5860765 In-water dry dock system with removable centerline insert Jan. 19, 1999
5832859 Welded stud hanging assembly for a blasting and coating containment system Nov. 10, 1998
5810513 Method and apparatus for preventing trench overflows behind trench liners Sep. 22, 1998
5275505 Locking system for boat water-lifts Jan. 4, 1994
5259694 Personal watercraft launcher Nov. 9, 1993
5178488 Method of determining and analysing a ships weight Jan. 12, 1993
5140922 Lift for a watercraft Aug. 25, 1992
4955308 Floating boat lift Sep. 11, 1990
4895479 Lift for watercraft Jan. 23, 1990
4861192 Marine craft lift Aug. 29, 1989
4773346 Hydraulic boat lift Sep. 27, 1988
4708081 Stabilizer for floating and submersible structures Nov. 24, 1987
4686919 Method for constructing large-scale marine structure Aug. 18, 1987
4686920 Cradle type boat lifts Aug. 18, 1987
4549835 Docking apparatus for ships Oct. 29, 1985
4479450 Floating dock Oct. 30, 1984
4276847 Method for assembling hulls of vessels Jul. 7, 1981
4267788 Self-stabilized elevator-float for drydocking or floating any type of vessel May. 19, 1981
4231679 Dry dock for building vessels Nov. 4, 1980
4226202 Floating lash barge lifting device Oct. 7, 1980
4087979 Drydock lifting platform May. 9, 1978
4084529 Floating dry dock with lifting pontoons Apr. 18, 1978
4056942 Method for moving built structures by flotation Nov. 8, 1977
3978676 Ship lifting apparatus Sep. 7, 1976











 
 
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