Ski boot safety binding

Details Ski boot safety binding Ski boot safety binding

1998-06-22

2001-10-02

Mar, Michael (Department: 3611)

Land vehicles

Skates

Shoe attaching means

C280S634000

Reexamination Certificate

active

06296267

ABSTRACT:

FIELD OF THE INVENTION
The invention relates to a heel piece of a safety binding for holding a boot on a ski, comprising a tubular binding body which is open at its two ends, is rigidly linked to a sole grip and is articulated about a transverse cam forming part of a stirrup piece which is articulated about a horizontal axis onto a plate mounted so as to pivot on the ski about a substantially vertical axis, this body containing at least one spring which works in compression between a piston bearing on the cam, and a stop secured to a setting screw.
PRIOR ART
A heel piece of this type, referred to as a pivot heel piece, is described in patent CH 397 500. Moreover, this binding has become a brand image of the applicant over the years. In this heel piece, the stop consists of the setting screw, itself in the form of a screw threaded plug screwed into the tapped end of the binding body. This binding body is in the form of a tube closed on the sole grip side. An embodiment of this type therefore requires the manufacture of a special screw and the tapping of the binding body. This machining represents relatively expensive operations.
In addition, patent FR 2 034 708 discloses a heel piece which is of the same type, but in which the body of the binding is open on the sole grip side. The adjustable stop also consists of a special screw screwed into a tap of the body of the binding, and the cam is mounted between two springs. Access to the setting screw is not very convenient.
SUMMARY OF THE INVENTION
The object of the present invention is to reduce the cost of manufacturing the heel piece.
To this end, the heel piece according to the invention is one wherein the setting screw bears axially, by its head, against a bearing zone of the binding body, and wherein the stop consists of a nut mounted on the setting screw.
It is easy to form a bearing zone at the upper end of the body of the binding by leaving a shoulder around the opening. It is then possible to use a simple commercially available collared screw which bears by its collar against this bearing zone. A nut, for example of the knurled nut type, can be used as a stop. The knurling can at the same time be used as an index for displaying the release setting of the binding.
Between the screw and the bearing zone, a sliding part with low coefficient of friction is advantageously arranged. At the same time, this sliding part seals the binding body on the setting screw side.
The screw with its stop, the spring and the piston are mounted in the binding body through the end corresponding to the sole grip.
Setting continues to take place through the most accessible end of the heel piece.


REFERENCES:
patent: 3249365 (1966-05-01), Beyl
patent: 3964759 (1976-06-01), Salomon
patent: 3970326 (1976-07-01), Salomon
patent: 4607859 (1986-08-01), Wittmann et al.
patent: 4629209 (1986-11-01), Lorenz et al.
patent: 4681338 (1987-07-01), Spitaler
patent: 561008 (1993-09-01), None
patent: 2652273 (1991-03-01), None

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