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US 2024/0423316 A1Published application
Negative poisson`s ratio materials for winter sports equipment
OwnerJoon Bu Parkinventor
Life of this patent
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Abstract
A ski includes an elongated ski body having a bottom layer defining a bottom surface of the ski, a top layer defining a top surface of the ski, and a middle layer disposed between the bottom layer and the top layer, in which the middle layer includes a negative Poisson's ratio (NPR) foam material having a Poisson's ratio of between 0 and −1.
Claims12
A ski boot comprising:
- a rigid external shell defining an interior space, the shell comprising a rigid sole configured to couple to a binding affixed to a ski;
- a buckle attached to the external shell and configured to maintain the shell in a closed configuration;
- and
- an inner boot disposed within the interior space defined by the external shell, the inner boot configured to receive a foot of a wearer,
- in which the external shell, the internal boot, or both comprises an NPR polymer foam material.
2 more elements
An ice skate comprising:
- a shoe comprising a sole and an upper, the sole and upper defining an interior space sized and dimensioned to receive a foot of a wearer;
- and
- a blade attached to the sole of the shoe, wherein the blade comprises a negative Poisson's ratio (NPR) metal foam material having a Poisson's ratio of between 0 and −1.
A snowboard comprising:
- a snowboard body having a bottom layer defining a bottom surface of the ski, a top layer defining a top surface of the ski, and a middle layer disposed between the bottom layer and the top layer,
- in which the middle layer comprises a negative Poisson's ratio (NPR) foam material having a Poisson's ratio of between 0 and −1.
A snowmobile comprising:
- a body including a seat;
- a motor housed in the body;
- treads attached to a bottom side of the body, wherein the treads are configured to be driven by the motor to rotate relative to the seat;
- and
- a runner attached to the bottom side of the body, in which the runner comprises a negative Poisson's ratio (NPR) foam material having a Poisson's ratio of between 0 and −1.
2 more elements
Dependencies are inferred from the claim text.