Anti-cavitation system

Ships – Hull or hull adjunct employing fluid dynamic forces to... – Movably mounted hull portion or hull adjunct

Reexamination Certificate

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Details

C114S271000

Reexamination Certificate

active

07380515

ABSTRACT:
An anti-cavitation plate actuating system incorporates pressurized air selectively applied through a control valve to an air assist cylinder. The cylinder, when pressurized, applies force to anti-cavitation plate return springs; the force is not sufficient to expand or retract the springs but merely to apply a pre-load. A control pedal operating through a control shaft applies additional force through an actuating shaft connected through a control lever to the anti-cavitation plate to lower the plate.

REFERENCES:
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patent: 4216737 (1980-08-01), Niederste-Hollenberg et al.
patent: 4781632 (1988-11-01), Litjens et al.
patent: 4896622 (1990-01-01), Thomas
patent: 5178566 (1993-01-01), Stojkov et al.
patent: 6607410 (2003-08-01), Neisen et al.
patent: 6902449 (2005-06-01), Faucheux et al.
patent: 6971932 (2005-12-01), Maselter
patent: 2004/0175997 (2004-09-01), Johnson
patent: 2006/0052014 (2006-03-01), Kobayashi
patent: WO2004/072502 (2004-08-01), None

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