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Class Information
Number: 405/3
Name: Hydraulic and earth engineering > Marine vessel portage, launching, or removing > Lifting
Description: Method or apparatus wherein the vessel is raised or lowered in a substantially vertical manner.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8678703 Watercraft lift Mar. 25, 2014
8676402 Sentry system with wireless interface for a docked boat Mar. 18, 2014
8596906 Retractable wheel for boat lift and other structures Dec. 3, 2013
8596907 Lifting system Dec. 3, 2013
8430045 On board lift leg construction for pontoon boats with onboard engine Apr. 30, 2013
8397659 Boat lift canopy entrance Mar. 19, 2013
8388265 Watercraft lift system Mar. 5, 2013
8267620 Rotatable boat lift with sliding pads Sep. 18, 2012
8267621 Floating boatlift Sep. 18, 2012
8251608 Method of operating a shiplift Aug. 28, 2012
8251609 Method of operating a shiplift Aug. 28, 2012
8221028 Boat lift operated by boat's propulsive force Jul. 17, 2012
8215889 System and method for high current recovery cursor Jul. 10, 2012
8215868 Hydraulic powered boat portage apparatus Jul. 10, 2012
8186908 Method of operating a shiplift May. 29, 2012
8137028 Small boat dock racking system Mar. 20, 2012
8123433 Inflatable lift system Feb. 28, 2012
8096729 Wheel adjustment apparatus Jan. 17, 2012
8082100 Watercraft automation and aquatic effort data utilization Dec. 20, 2011
8079779 Device for pulling out a ship Dec. 20, 2011
8061932 Hydraulic boat lift Nov. 22, 2011
7997827 Watercraft support and tote device Aug. 16, 2011
7908988 Method and apparatus for salvaging underwater objects Mar. 22, 2011
7887261 Method for the transport of a civil engineering structure in an aquatic medium Feb. 15, 2011
7856936 Lift lock security system Dec. 28, 2010
7815394 Device for a watercraft for picking up and launching boats Oct. 19, 2010
7765945 Watercraft lift stabilizing system and accessories therefor Aug. 3, 2010
7766577 Method of operating a shiplift Aug. 3, 2010
7707955 Transom platform lifting apparatus and method May. 4, 2010
7637690 Programmable boatlift system with boat position sensor Dec. 29, 2009
7628564 Boat launching, retrieval, and transport method Dec. 8, 2009
7547159 Cradle boat lift storm protection system Jun. 16, 2009
7534069 Programmable boatlift system with boat position sensor May. 19, 2009
7527014 Self-adjusting watercraft canopy May. 5, 2009
7444952 Boat hull rinsing device Nov. 4, 2008
7419329 Semi-submersible dry-docking lift apparatus Sep. 2, 2008
7377720 Boat lift May. 27, 2008
7367747 Adjustable and extending transport cradle for watercraft May. 6, 2008
7354223 Mechanical ship lift Apr. 8, 2008
7338231 Boat hoist Mar. 4, 2008
7318385 Boat lift Jan. 15, 2008
7299758 Apparatus for transporting boat lifts Nov. 27, 2007
7293521 Hydraulic transom lift Nov. 13, 2007
7273329 Hydraulic boat lift Sep. 25, 2007
7267071 Apparatuses and methods useful for centering watercraft Sep. 11, 2007
7267066 Boat lift Sep. 11, 2007
7246970 Shallow water watercraft lift Jul. 24, 2007
7226041 Winch assembly for a lift structure supportive of a recreational boat and related watercraft Jun. 5, 2007
7213526 Personal watercraft lift May. 8, 2007
7207746 Remote boat lift switch Apr. 24, 2007

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