Sailing aid

Details Sailing aid Sailing aid

1979-07-11

1981-02-17

Grieb, William H.

Education and demonstration

Vehicle operator instruction or testing

Sail-equipped vehicle

G09B 906

Patent

active

042506352

ABSTRACT:
A disk has imprinted around its outer periphery various sailboat trim conditions, from beat to run. In the central portion of the disk is an index in the shape of a boat hull. Between this index and the outer periphery of the disk in a rotatable annular index with arrows for indicating the wind direction. By maintaining the central index in alignment with the longitudinal axis of the sailboat hull and rotating the annular index so that it is aligned with the wind direction, one obtains from the outer periphery of the disk a reading which indicates the proper trim of the sailboat for that wind direction.

REFERENCES:
patent: 2395838 (1946-03-01), Beishline
patent: 2470143 (1949-05-01), Christie
patent: 2516677 (1950-07-01), Christie
patent: 3305943 (1967-02-01), Hansen
patent: 3354558 (1967-11-01), Peterson et al.
patent: 3570140 (1971-03-01), Sprong
patent: 3680230 (1972-08-01), Thompson
patent: 3747230 (1973-07-01), Duval
patent: 3783530 (1974-01-01), Duval
patent: 3940862 (1976-03-01), Nishimura
patent: 4202114 (1980-05-01), Berson

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