Land vehicles – Skates – Runner type
Patent
1991-12-11
1993-05-04
Mitchell, David M.
Land vehicles
Skates
Runner type
280617, 280636, 411178, A63C 504
Patent
active
052074455
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a shock absorber for the fastening of ski bindings to a ski having an upper belt, with the ski binding having a base or rather binding plate with receiving points for fastening screws, and with at least one insert receiving and anchoring the screws being provided in a recess in the core of the ski, which insert is constructed of at least one layer of a high strength material, as for example of a metal layer, preferably of an aluminum alloy and/or of GFK-texture laminates, with each insert, aside from the high strength layer, having at least one layer of an elastomer material, like rubber, silicon rubber or the like, preferably arranged above the high strength layer, and with at least one spacer sleeve being provided, which is supported on the high strength layer and extends through the layer of elastomer material and the upper belt, at least the latter one with clearance, and the spacer sleeve, when the binding is mounted, projecting upwardly beyond the upper side of the ski and holding the ski binding, in particular its base or binding plate, at a distance from the upper side of the ski.
BACKGROUND OF THE INVENTION
A shock absorber for ski findings has been accessible to the general public since the ISPO '89 through products, catalogues and illustrative discussions. The inserts, which are used to receive the fastening screws, are in this known design constructed in the core of the ski in the form of multi-layer strips so that front and rear fastening screws, which are each provided on one side of a ski binding part, can each be received by means of an insert. Even if the design has advantageous shock absorbing characteristics, tolerance problems occur from case to case because the strip-shaped inserts must be installed during the manufacture of the ski so that with differently wide skis and with ski binding parts having different hole arrangements the optimum position between the fastening screws and the strip-shaped inserts cannot always be achieved. This design is also disclosed in U.S. Pat. No. 5,016,901.
The purpose of the present invention is to bring help here and to arrange the shock absorbing elements corresponding with the respective hole arrangements of the ski binding parts to be fastened.
SUMMARY OF THE INVENTION
The objects and purposes of the invention are met by providing a shock absorber for effecting a fastening of a ski binding to a ski which has an upper belt, and internal core and a lower belt, the ski binding having a base plate member adapted to be secured to the ski. An insert device is provided for reception through an opening in the upper belt and into the internal core of the ski for effecting a securement of the ski binding to the ski. The insert device includes an elongated hollow sleeve member fixedly anchored in the internal core of the ski so that a central axis thereof is oriented generally perpendicular to an upper surface of the upper belt. An end of the hollow sleeve member adjacent the upper belt is opened. The hollow sleeve member has a smooth inner wall surface defining a first cross sectional area larger than a second cross sectional area of the open end into the hollow sleeve. A high strength layer member is reciprocally received in the hollow sleeve member. The high strength layer member has a further cross sectional area conforming in size to the cross sectional area of the inside of the hollow sleeve member as well as a first part of a two part fastening device. An elastomer material member is oriented between the high strength layer member and the opened end of the hollow sleeve member so that the elastomer material member will be compressed as the high strength layer member moves toward the open end. The first part of the two part fastening device is connected to a second part to facilitate a securing of the ski binding to the ski, the connected first and second parts effectively uniting the base plate member to the high strength layer member.
BRIEF DESCRIPTION OF THE DRAWINGS
Further advantages, details
REFERENCES:
patent: 4097061 (1978-06-01), Dietlein
patent: 5016901 (1991-05-01), Mayr
HTM Sport- und Freizeitgeraete Gesellschaft m.b.H.
Mitchell David M.
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