Ski boot safety binding

Details Ski boot safety binding Ski boot safety binding

1998-06-24

2001-03-27

Mar, Michael (Department: 3619)

Land vehicles

Skates

Shoe attaching means

C280S629000, C280S628000

Reexamination Certificate

active

06206404

ABSTRACT:

FIELD OF THE INVENTION
The invention relates to a heel piece of a safety binding for holding the boot on a ski, comprising a tubular binding body which is rigidly linked to a sole grip and is articulated about a transverse cam forming part of a stirrup piece linked to a pivoting plate mounted on a rail, along which rail this plate can be positioned by rear-operated positioning means, the binding body containing at least one spring which works in compression between a piston bearing on the cam and a stop linked to or consisting of a setting screw, the cam being formed in a cylindrical part which serves as a rotation pin for the body and has a flat extending parallel to the axis of said cylindrical part, with the piston bearing on this flat when the heel piece is closed.
PRIOR ART
A heel piece of this type is described in patent CH 397 500 and has been used for a number of years by the applicant. The positioning means generally consist of a longitudinal screw engaging with cycloid teeth on the rail, this screw being operated by a screwdriver.
When this heel piece is open, the piston bears on the cylindrical part of the cam. The binding body can therefore tilt until it touches the ski and thus impair access to the means for setting the position of the heel piece on its rail.
SUMMARY OF THE INVENTION
The principal object of the invention is to limit the extent to which the heel piece opens, so as to leave free access to the means for setting the position of the heel piece on its rail.
To this effect, the heel piece according to the invention is one wherein the zone of the cam on which the piston bears when the heel piece is open is formed in such a way as to limit the tilting of the binding body when the heel piece is being opened.
According to a first embodiment, said zone consists of a second flat, smaller than the first flat but sufficient to hold the binding body by virtue of the strong force exerted by the spring in this position. This position is also stable, and the effect of this is to prevent abrupt accidental closure of the heel piece in the event of impact on the binding body.
According to a second embodiment, said zone of the cam has a projection which limits the rotation of the cam relative to the piston. This projection may have a plane face tensioned to the cylindrical part of the cam. This plane face therefore constitutes a flat whose presence will not be noticed when the binding is being closed, unlike a true secant flat according to the first embodiment.


REFERENCES:
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patent: 5713594 (1998-02-01), Jenni
patent: 5913531 (1999-06-01), Buquet
patent: 2 502 019 (1982-09-01), None
patent: 2 510 019 (1983-02-01), None

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