Automatic trim for power boats

Details Automatic trim for power boats Automatic trim for power boats

2005-08-02

2005-08-02

Swinehart, Ed (Department: 3617)

Ships

Hull or hull adjunct employing fluid dynamic forces to...

Movably mounted hull portion or hull adjunct

Reexamination Certificate

active

06923136

ABSTRACT:
A trim tab (18, 204) hinged (19) at the bottom edge of a boat transom (12, 179) is rotated into a position below the boat when the drive (58, 186) is in a lowest-most trim position, and is raised up, when the drive is above a selected pickup trim position. A push tube (58) connected to the motor (16) operates a push rod (49) and a trim tab (18). A push bar (96, 97) is moved by the drive, causing pieces (104, 105) to rotate trim tabs (18a). A fluidic slave cylinder (142) is operated by a master cylinder (134) or by a pump (148) responding to a position detector (150). Levers (164, 167) may be connected by a cable (155). A hydraulic master cylinder (195) is disposed on a part (186) of an outdrive that rotates for trim, its cylinder rod (200) contacting a fixed part (184), driving fluid to a slave cylinder (201) mounted on a fixed part (183) with its piston rod (202) moving a trim tab (204).

REFERENCES:
patent: 2886462 (1959-05-01), Jagiel

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