Boom brake

Details Boom brake Boom brake

1993-06-25

1995-02-21

Avila, Stephen P.

Ships

Spars

Gaffs, booms, etc.

114102, B63H 904

Patent

active

053906179

ABSTRACT:
A boom brake for controlling the swinging motion of the boom of a sailboat includes a housing attached to the boom having two plates between which three bearing surfaces are mounted to engage a line attached to the sides of the sailboat in a serpentine path such that the line makes less than a full turn around each bearing surface to preclude overwrapping of the line. At least one of the bearing surfaces can be adjustably rotatable such that the force required to cause rotation can be selectively controlled. Braking of the boom motion is provided by sliding friction between the line and the bearing surfaces.

REFERENCES:
patent: 2223389 (1940-12-01), Schaedler
patent: 3391907 (1968-07-01), Vogelsang
patent: 4138962 (1979-02-01), Waelder
patent: 4630564 (1986-12-01), Duckman et al.
patent: 4762318 (1988-08-01), Phillips et al.
patent: 4830340 (1989-05-01), Knitig
patent: 4912814 (1990-04-01), McKenzie
patent: 4941420 (1990-07-01), Heintz
patent: 5070802 (1991-12-01), Corlett

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