| 摘要 |
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.
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