Device for moving an object in relation to a fluid

Details Device for moving an object in relation to a fluid Device for moving an object in relation to a fluid

2011-01-25

2011-01-25

Swinehart, Ed (Department: 3617)

Marine propulsion

Oscillating propelling means

Fishtail motion propelling means

Reexamination Certificate

active

07874882

ABSTRACT:
The device comprises at least one flap member (3) having a rear flap portion that runs in a plate plane, and a forward portion, as seen in the direction of motion (F). The forward portion (8) is connected to the object (2) in such manner that the flap portion (17) can be moved in the fluid transverse to the plate plane and between two positions which are on their respective sides of a neutral place (P). Furthermore, the device comprises an actuating means (8, 9) which allows a freely oscillating motion of the flap member (3; 61, 62), and a drive unit (6) for actuating the flap member (3; 61, 62) when the valve of an oscillation amplitude of the flap member (3; 61, 62) is less than a predetermined threshold value.

REFERENCES:
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patent: 4490119 (1984-12-01), Young
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patent: 0 252 733 (1988-01-01), None
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patent: WO 97/48599 (1997-12-01), None
Japanese Office Action for corresponding Japanese Patent Application No. 2007-535625, mailed Jun. 2, 2010, with English translation.

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