Land vehicles – Skates – Shoe attaching means
Patent
1987-12-18
1990-02-13
Marmor, Charles A.
Land vehicles
Skates
Shoe attaching means
280634, A63C 9084
Patent
active
049000535
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a heel-holder for a safety ski binding.
2. Description of the Related Art
A heel-holder for a safety ski binding is disclosed in German Offenlegungsschrift No. 17 03 719. This safety ski binding releases the ski boot both horizontally and vertically. The binding includes a spring-loaded snap-in device cooperating with two snap-in elements. One of these snap-in elements locks the binding against vertical motion, the other against lateral motion. If a load is applied in one direction, the corresponding snap-in element for that direction forces the snap-in device back against the force of the spring and thereby reduces the spring force required for release of the heel-holder when pivoting motion occurs in the direction orthogonal thereto. However the motion in the one direction requires the loosening of the snap-in element in the other direction because the snap-in device moves away from its corresponding snap-in element. Accordingly when a single snap-in device is used which includes a snap-in element for vertical motion and one for horizontal motion, difficulties are encountered in adjusting the two snap-in processes.
Austrian patent No. 380,174 discloses a heel-holder with a housing and a snap-in mechanism which pivots against the force of a spring about a vertical pin fixed to a base plate, which is in turn fixed to a ski. The snap-in mechanism includes two levers, both pivoting about the same pivot in the housing. One lever controls horizontal pivoting and the other lever controls vertical pivoting. The lever controlling horizontal pivoting is disposed in a recess of the lever controlling the vertical pivoting. Both levers pivot about the same pivot. The lever controlling the horizontal pivoting is spring-loaded and includes a control cam cooperating with a roller mounted on an extension of the base plate. This arrangement requires three springs.
The object of the invention is to provide a safety ski binding having a controlled vertical and horizontal release which is free of the drawbacks of the above-described bindings.
Additional objects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objects and advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the appended claims.
SUMMARY OF THE INVENTION
To achieve the foregoing objects, and in accordance with the purposes of the invention as embodied and broadly described herein, there is provided a heel-holder for a safety ski binding comprising a base plate adapted to be mounted to the upper surface of a ski, the base plate including a raised pin at one end and at least one extension at the other end thereof; a housing horizontally pivotable about the raised pin, the housing including a cross-pin provided in the upper part thereof; a sole-holder vertically pivotable about the cross-pin, the sole holder including a hollow portion housing a control cam on an upper wall of the hollow portion; a snap-in device provided in the housing, the snap-in device comprising a snap-in rocker pivotably mounted in the housing about a pivot pin arranged parallel to the cross pin and a control member pivotably mounted on the snap-in rocker and perpendicular to the pivot pin, the snap-in rocker engaging the control cam of the sole-holder and the control member engaging the at least one base plate extension; and a spring for loading the snap-in device, the spring being capable of applying a force for releasing the binding, the snap-in device reducing the spring force necessary for releasing the binding during both the vertical pivoting of the sole-holder and the horizontal pivoting of the housing.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings which are incorporated in and constitute a part of of the specification, illustrate presently preferred embodiments
REFERENCES:
patent: 3610650 (1971-10-01), Korger et al.
patent: 3620545 (1971-11-01), Korger et al.
patent: 3649037 (1972-03-01), Vouthier
patent: 4165883 (1979-08-01), Wiegl et al.
patent: 4230338 (1980-10-01), Wiegl et al.
patent: 4266439 (1980-10-01), Kirsch
patent: 4266806 (1981-05-01), Wiegl et al.
patent: 4337965 (1982-07-01), Salomon
patent: 4553772 (1985-11-01), Boussemart et al.
patent: 4681338 (1987-07-01), Spitaler
Freisinger Henry
Luschnig Franz
Stritzl Karl
Johnson Brian L.
Marmor Charles A.
TMC Corporation
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