Automatic warning flag system for a water ski boat

Details Automatic warning flag system for a water ski boat Automatic warning flag system for a water ski boat

2006-03-21

2006-03-21

Olson, Lars A. (Department: 3617)

Ships

Towing or pushing

Towing by means of cable

C114S252000, C116S173000

Reexamination Certificate

active

07013823

ABSTRACT:
A mechanical warning flag system for a water ski boat. A first plate is coupled for rotation underneath the rope pylon. A second plate is coupled to the first plate and includes a vertical portion with an arcuate opening. A lever plate is pivotally coupled to the vertical portion of the second plate and includes a lever arm that receives one end of a bias spring and travels in the arcuate opening. The lever plate includes a pair of rope holders through which the tow rope is threaded. One rope holder is part of the pivotal connection, and the other is located on a distal portion of the lever plate. Since the lever arm is located between the rope holders, tension applied to the tow rope forces the lever plate downward thereby lowering the warning flag. In the absence of rope tension, a bias spring urges the lever plate upward to raise the warning flag.

REFERENCES:
patent: 3602188 (1971-08-01), Penaflor
patent: 3735724 (1973-05-01), Miller
patent: 3786778 (1974-01-01), Palmer et al.
patent: 3848244 (1974-11-01), Young et al.
patent: 4640213 (1987-02-01), Lugo
patent: 4782784 (1988-11-01), Little
patent: 4871996 (1989-10-01), Tsunamoto et al.
patent: 4934972 (1990-06-01), Shumway et al.
patent: 5408221 (1995-04-01), Carsella, Sr. et al.
patent: 5771836 (1998-06-01), Crouse

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