Safety binding for a ski boot
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United States of America Patent
Stats
-
Jun 30, 1987
Grant Date -
N/A
app pub date -
Jul 12, 1983
filing date -
Jul 13, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for connecting a ski boot to a ski having a binding that is adapted to permit the heel of the boot to be lifted from the ski in normal use. In addition, the binding is also adapted to permit the boot to pivot around the vertical pivot axis. The vertical pivot axis passes through a support zone of the foot which is bounded by the phalanges and metatarsals of the foot. In one preferred embodiment the vertical pivot axis passes through the journal axis around which the metatarsals journal on the phalanges. As a result, lateral forces that are produced as a result of normal skiing by the foot acting against boot cause only a negligible torsion moment because these forces act at the vertical pivot axis, and therefore the lever arm is negligible. In another embodiment, the apparatus is adapted to attach a small boot or a large boot to the ski. In this embodiment, the vertical pivot axis is located so as to pass through the area common to the support zone of the foot in the large boot and the support zone of the foot in the small boot.
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