Hydraulic and earth engineering – Marine vessel portage – launching – or removing – Lifting
Reexamination Certificate
2006-06-13
2006-06-13
Lee, Jong-Suk (James) (Department: 3673)
Hydraulic and earth engineering
Marine vessel portage, launching, or removing
Lifting
C405S004000, C114S044000, C114S048000
Reexamination Certificate
active
07059803
ABSTRACT:
A boatlift leg and frame structure utilizing a ball screw lifting mechanism driven by a reversible electric motor to raise and loser a boat support carriage. The raising and lowering operation of the ball screw mechanism is controlled by electronic circuitry that includes wired and remote direction selection; lifting logic with conflict detection and direction reversal delay; lighting control logic; motor power control; and overload detection logic to detect lifting overload and disable power to the motor power control. A drive train mechanism converts high-speed low torque rotation of the motor drive shaft to low-speed high-torque rotation drive of the ball screw. A boatlift leveling mechanism associated with one or more legs of the boatlift includes a ground engaging footpad, an extendible leg, a height adjusting screw mechanism and a height adjusting actuator with mating bevel gears coupled to the height adjusting screw for allowing adjustment through the side of a boatlift leg.
REFERENCES:
patent: 2307420 (1943-01-01), Mead
patent: 2529948 (1950-11-01), Jones
patent: 2562189 (1951-07-01), Harris
patent: 2589882 (1952-03-01), Sinner et al.
patent: 3077742 (1963-02-01), Brown
patent: 3139732 (1964-07-01), Thompson
patent: 3169644 (1965-02-01), Godbersen
patent: 3177668 (1965-04-01), Schneider et al.
patent: 3265024 (1966-08-01), Kramlich
patent: 3275167 (1966-09-01), Godbersen
patent: 3284052 (1966-11-01), Godbersen
patent: 3409153 (1968-11-01), Stearn et al.
patent: 3528563 (1970-09-01), Valory et al.
patent: RE27090 (1971-03-01), Rutter
patent: 3640403 (1972-02-01), Godbersen
patent: 3654885 (1972-04-01), Godbersen
patent: 3675258 (1972-07-01), Osmundson
patent: 3683838 (1972-08-01), Godbersen
patent: 3697048 (1972-10-01), Sarno
patent: 3757962 (1973-09-01), Chavet
patent: 3865223 (1975-02-01), Godbersen
patent: 3895592 (1975-07-01), King
patent: 3905499 (1975-09-01), Speidel
patent: 3911980 (1975-10-01), McColl
patent: 4027492 (1977-06-01), Carpenter
patent: 4072119 (1978-02-01), Williams
patent: 4109896 (1978-08-01), Ragen
patent: 4126006 (1978-11-01), Lewis
patent: 4174187 (1979-11-01), Parisien
patent: 4195948 (1980-04-01), Vancil
patent: 4280429 (1981-07-01), Wells
patent: 4287625 (1981-09-01), Dawson
patent: 4318632 (1982-03-01), Fortmeyer
patent: 4363284 (1982-12-01), Monroe
patent: 4391550 (1983-07-01), Rutter
patent: 4401335 (1983-08-01), Godbersen
patent: 4432664 (1984-02-01), Baldyga
patent: 4482268 (1984-11-01), Stevenson et al.
patent: RE32118 (1986-04-01), Godbersen
patent: 4595313 (1986-06-01), Kotke
patent: 4641596 (1987-02-01), Reprogle et al.
patent: 4641996 (1987-02-01), Seal
patent: 4653769 (1987-03-01), Kenney et al.
patent: 4678366 (1987-07-01), Williamson
patent: 4763593 (1988-08-01), Lasko
patent: 4764081 (1988-08-01), Peterson
patent: 4832210 (1989-05-01), Wood, II
patent: 5482401 (1996-01-01), Spisak
patent: 5522671 (1996-06-01), Keesling
patent: 5593247 (1997-01-01), Endres et al.
patent: 5655850 (1997-08-01), Holmgren
patent: 5772360 (1998-06-01), Wood, II
patent: 5908264 (1999-06-01), Hey
patent: 6174106 (2001-01-01), Bishop et al.
patent: 6230639 (2001-05-01), McLaughlin et al.
patent: 6408776 (2002-06-01), McLaughlin et al.
patent: 6554533 (2003-04-01), Godbersen
patent: 6695533 (2004-02-01), Bulmann
patent: 50319373 (1993-12-01), None
Floe Wayne G.
Myers Daniel C.
Floe Wayne G.
Johnson Charles A.
Lee Jong-Suk (James)
LandOfFree
Powered boatlift with electronic controls does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Powered boatlift with electronic controls, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Powered boatlift with electronic controls will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3676547