Land vehicles – Skates – Runner type
Patent
1997-05-02
1998-11-24
Camby, Richard M.
Land vehicles
Skates
Runner type
A63C 710
Patent
active
058397469
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a ski brake in which at least one brake arm is pivotably mounted about an axis fixed relative to the ski from a readiness position into a braking position and back, the axis fixed relative to the ski extending substantially in parallel to the ski upper side and at a right angle to the longitudinal axis of the ski, and the brake arm being connected with a pedal plate via a pivot axis extending in parallel to the pivot axis of the brake arm, and in which the pedal plate is biassed into the braking position by at least one spring and capable of being brought into the readiness position against the biassing force of the spring by pressing down, in which readiness position the free end of the brake arm is generally lifted to the lvel of the ski upper side, and in the braking position an end-side latching portion of the pedal plate being supported in the region of the ski upper side on a supporting surface fixed relative to the ski, and the pedal plate on the side opposite the latching portion being extended beyond its brake arm pivot axis so as to form an actuation portion for releasing the latching portion of the pedal plate from the supporting surface when pressing down the pedal plate.
From FR 2 255 926 A a ski brake is known in which a brake arm is mounted to be pivotable about an axis directly attached to the side face of a ski transversely to its longitudinal axis, from a readiness position into a braking position and back. The brake arm is connected with a pedal plate via a pivot axis extending in parallel to the pivot axis of the brake arm, a tension spring, one end of which is fastened to the pedal plate and its other end being fastened at the pivot axis of the brake arm, bringing the brake arm into the braking position if the pedal plate is not loaded. On the ski upper side, a longitudinal guide for the lower end of the pedal plate and consisting of an upper portion and a lower portion is fastened. The lower portion of the longitudinal guide has a ramp-shaped elevation extending transversely to the longitudinal axis of the ski, which elevation serves as a support for the lower end of the pedal plate in the braking position. When the upper end of the pedal plate extended beyond its pivot axis is pressed down, the lower end of the pedal plate moves upwards outwardly from the elevation of the lower portion of the longitudinal guide and slides forwards along the lower side of the upper portion of the longitudinal guide, until the brake arm is in the readiness position in which the upper edge of the brake arm is approximately located at the level of the ski upper side. What is a grave disadvantage is that if the brake arm is in the braking position and the ski is loaded more heavily, e.g. if someone steps on the ski externally of the ski binding, the brake arm may be bent or even broken.
A ski brake in which the pedal plate and the brake lever are interconnected in the manner of a toggle lever is further known from AT 380 794 B or from EP-77 006 B1. There, the lower or front end of the pedal plate is articulately connected with a ram which is guided in a housing and is biassed by a pressure spring in a manner that the brake lever is pivoted into the braking position. In the braking position, the pressure spring is only slightly tensioned, and thus only a rather moderate braking effect is attainable, since with the corresponding forces exerted thereon by the ground, the brake lever is pivoted back, contrary to the--slight--spring force. To counteract this, a strong pressure spring would have to be used, which is, however, detrimental with a view to stepping with the ski boot into the ski binding as well as with a view to the action of forces on the ski boot.
It is thus the object of the invention to provide a ski brake of the initially defined type, in which the brake lever in the braking position cannot simply be pivoted back towards the readiness position by an action of force merely from the ground, even if a rather weak spring is used for biassing the brake arm, so that neverthe
REFERENCES:
patent: 4361343 (1982-11-01), Luitz
patent: 4500106 (1985-02-01), Svoboda
patent: 4564211 (1986-01-01), Luitz et al.
patent: 4872698 (1989-10-01), Szafranski
Atomic Austria GmbH
Camby Richard M.
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