Water craft

Details Water craft Water craft

2005-12-02

2011-10-11

Olson, Lars A (Department: 3617)

Ships

Submersible device

Having attitude control

C114S331000

Reexamination Certificate

active

08033235

ABSTRACT:
A water craft (10) includes a hull (12) defining two cavities (18). An inflatable chamber (22) is arranged in each cavity (18), for displacing water from hull (12), in use, to increase the buoyancy of the craft (10). As the chamber (22) is inflated, it expands to reduce the free space available for water in the cavity (18), so as to directly expel water from the cavity (18). The chamber (22) can be deflated, in order to flood the cavity and thereby sink the craft (10). The craft (10) is intended to be operated in a normal buoyant mode and in a submarine mode, and includes propeller means (34). The craft may be in the form of a catamaran-type vessel, a jet-ski, or a submersible tank.

REFERENCES:
patent: 3257982 (1966-06-01), Meldrum
patent: 3943869 (1976-03-01), Frechette
patent: 4577583 (1986-03-01), Green, II
patent: 5704309 (1998-01-01), Kohnen
patent: 6065419 (2000-05-01), Stecker, Sr.
patent: 6321676 (2001-11-01), Kohnen et al.
patent: 6443087 (2002-09-01), Stecker, Sr.
patent: 2688466 (1993-09-01), None
patent: 2222390 (1990-03-01), None
patent: 2338943 (2000-01-01), None
patent: 97/20732 (1997-06-01), None

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