Watercraft hull with adjustable keel

Details Watercraft hull with adjustable keel Watercraft hull with adjustable keel

2005-12-06

2008-03-04

Swinehart, Ed (Department: 3617)

Marine propulsion

Screw propeller

Having means to control flow around propeller

Reexamination Certificate

active

07338336

ABSTRACT:
A watercraft hull having a pair of laterally spaced propulsion tunnels located on opposite sides of its keel, with said tunnels being open downwardly towards the water, includes a movably mounted keel section located between said propulsion tunnels to prevent water crossflow between said tunnels and increase dynamic lift on the hull.

REFERENCES:
patent: 352682 (1886-11-01), Edmondson
patent: 1265035 (1918-05-01), Bazaine
patent: 1665149 (1928-04-01), Van Wienen
patent: 2753135 (1956-07-01), Gouge
patent: 3146752 (1964-09-01), Ford
patent: 3308780 (1967-03-01), Abramson
patent: 3456611 (1969-07-01), Johnson
patent: 3528380 (1970-09-01), Yost
patent: 3561389 (1971-02-01), Hunt
patent: 3998176 (1976-12-01), Stout et al.
patent: 4371350 (1983-02-01), Kruppa et al.
patent: 4406635 (1983-09-01), Wuhrer
patent: RE31563 (1984-04-01), Stout et al.
patent: 4649847 (1987-03-01), Tinkler et al.
patent: 4682560 (1987-07-01), Lieb et al.
patent: 4756265 (1988-07-01), Lane
patent: 4821663 (1989-04-01), Schad
patent: 4977845 (1990-12-01), Rundquist
patent: 5588389 (1996-12-01), Carter, Jr.
patent: 6193573 (2001-02-01), Small
patent: 6461206 (2002-10-01), Small et al.
patent: 6544081 (2003-04-01), Paulo
patent: 6773316 (2004-08-01), Keehn, Jr
patent: 2004/0142609 (2004-07-01), Davis
patent: 3607942 (1987-09-01), None
patent: WO87/00135 (1987-01-01), None

Affiliated with

Also associated with

Rating

Watercraft hull with adjustable keel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Watercraft hull with adjustable keel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Watercraft hull with adjustable keel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3965019