Hydraulic and earth engineering – Marine vessel portage – launching – or removing – Lifting
Reexamination Certificate
2007-04-24
2007-04-24
Lagman, Frederick L. (Department: 3673)
Hydraulic and earth engineering
Marine vessel portage, launching, or removing
Lifting
Reexamination Certificate
active
11307715
ABSTRACT:
A novel watercraft lifting system for raising a watercraft to different positions relative to water and docks at least includes: at least one motorized winch adapted to be coupled via lift cables to a watercraft lift, the watercraft lift adapted to carry the watercraft thereon; a control unit coupled to the motorized winch to control the operation of the motorized winch; a cable tension detector adapted to detect the tension in the lift cables, and coupled to the control unit; and a user control transmitter adapted to transmit user-chosen RF control signals to the control unit. The control unit further at least includes a receiver adapted to receive the RF control signals, and the cable tension detector indicates that a watercraft has reached a buoyant level when the tension in the lift cables fall below a predetermined threshold.
REFERENCES:
patent: 4763592 (1988-08-01), Russ
patent: 5020463 (1991-06-01), Franklin
patent: 5287821 (1994-02-01), Godbersen
patent: 5427471 (1995-06-01), Godbersen
patent: D359947 (1995-07-01), Greene
patent: 5593247 (1997-01-01), Endres
patent: 5908264 (1999-06-01), Hey
patent: 5988941 (1999-11-01), Sargent et al.
patent: 6554533 (2003-04-01), Godbersen
patent: 6695533 (2004-02-01), Bulmann
patent: 6935807 (2005-08-01), Becker
patent: 7059803 (2006-06-01), Floe et al.
patent: 7090431 (2006-08-01), Cosgrove et al.
No associations
LandOfFree
Remote boat lift switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Remote boat lift switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Remote boat lift switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3800652