Snow tooth for a snow tiller and said snow tiller for the preparation of the snow cover of the ski slopes

Patent metadata

Field	Value
Publication number	US-12509832-B2
Application number	US-202217988483-A
Country	US
Kind code	B2
Filing date	Nov 16, 2022
Priority date	Nov 23, 2021
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

A snow tooth for a snow tiller for preparing the snowpack of ski slopes; the snow tooth comprising a first projection having a first height and a second projection having a second height, the first height and the second height; the snow tooth being shaped so as to be connected to a rotating shaft and have, in use, a main direction of rotation. The first projection is arranged along the snow tooth so that, in use, the first projection sinks into the snowpack before the second projection in particular when, in use, the snow tooth is attached to a shaft of the snow tiller and the shaft rotates in the main direction of rotation.

First claim

The invention claimed is:

1 . A snow tooth comprising:
a first projection having a first height, a second projection having a second height different from the first height, wherein when the snow tooth is attached to a shaft of a snow tiller and the shaft rotates in a first direction of rotation, the first projection sinks into a snowpack before the second projection, a first cutting portion defining a first profile, at least part of the first profile having a first angle of curvature, and a second cutting portion defining a second profile, at least part of the second profile having a second angle of curvature that is less than the first angle of curvature, wherein the first cutting portion and the second cutting portion face in a same direction of rotation such that when the snow tooth is attached to the shaft of the snow tiller and the shaft rotates in the first direction of rotation, the first cutting portion and the second cutting portion have a same orientation with respect to the first direction of rotation.

2 . The snow tooth of claim 1 , wherein the second profile defines one of a cusp shape and a V shape.

3 . The snow tooth of claim 1 , wherein the second profile defines a curved shape along a plane of symmetry.

4 . The snow tooth of claim 1 , further comprising a third cutting portion defining a third profile, wherein at least part of the third profile has a third angle of curvature at least equal to the first angle of curvature and greater than the second angle of curvature, wherein the first cutting portion faces in the first direction of rotation, and the third cutting portion faces in a second, opposite direction of rotation.

5 . The snow tooth of claim 1 , wherein:
the first profile comprises a portion inclined with respect to a first axis that lies on a plane of symmetry, and the third profile comprises a portion inclined with respect to the first axis, the portions being symmetrical with each other with respect to the first axis.

6 . The snow tooth of claim 1 , further comprising:
a first cutting portion, and a second cutting portion, wherein when the snow tooth is attached to the shaft of the snow tiller, the first cutting portion and the second cutting portion are each facing in the first direction of rotation and are separated by the first projection such that when the shaft rotates in the first direction of rotation, the first cutting portion sinks into the snowpack before the second cutting portion.

7 . The snow tooth of claim 6 , further comprising:
a third cutting portion facing in a second, opposite direction of rotation, wherein the second cutting portion and the third cutting portion are separated by the second projection such that when the snow tooth is attached to the shaft of the snow tiller and the shaft rotates in the second, opposite direction of rotation, the third cutting portion sinks into the snowpack before the second cutting portion.

8 . The snow tooth of claim 1 , further comprising a base defining a circumferential portion configured to be attached to the shaft of the snow tiller.

9 . The snow tooth of claim 8 , further comprising a central body extending along a first axis from the base and having a first cusp on a first side of a plane of symmetry and a second cusp on a second side of the plane of symmetry.

10 . The snow tooth of claim 1 , wherein:
the first height of the first projection is measured from a base, and the second height of the second projection is measured from the base, the second height is greater than the first height.

11 . The snow tooth of claim 1 , wherein:
the first projection comprises a first face perpendicular to a plane of symmetry and facing the first direction of rotation when the snow tooth is attached to the shaft of the snow tiller, and the second projection comprises a second face facing the first direction of rotation when the snow tooth is attached to the shaft of the snow tiller, an extension surface of the second face being greater than an extension surface of the first face.

12 . A snow tooth comprising:
a first projection having a first height and a first thickness measured along a direction perpendicular to a plane of symmetry and a first axis that lies on the plane of symmetry, the snow tooth being symmetrical with respect to the plane of symmetry, the snow tooth extending in height along the first axis, and the first thickness varies along an axis that lies on the plane of symmetry and is perpendicular to the first axis such that when the snow tooth is attached to a shaft of a snow tiller and the shaft rotates in a first direction of rotation, the thickness that sinks into a snowpack increases during rotation, and a second projection having a second height different from the first height and a second thickness measured along the direction perpendicular to the plane of symmetry and the first axis, the second thickness varies along the axis that lies on the plane of symmetry and is perpendicular to the first axis such that when the snow tooth is attached to the shaft of the snow tiller and the shaft rotates in the first direction of rotation, the first projection sinks into the snowpack before the second projection, and when the snow tooth is attached to the shaft of the snow tiller and the shaft rotates in a second, opposite direction of rotation, the thickness that sinks into the snowpack increases during rotation.

13 . The snow tooth of claim 12 , further comprising:
a first cutting portion, and a second cutting portion, wherein when the snow tooth is attached to the shaft of the snow tiller, the first cutting portion and the second cutting portion are each facing in the first direction of rotation and are separated by the first projection such that when the shaft rotates in the first direction of rotation, the first cutting portion sinks into the snowpack before the second cutting portion.

14 . The snow tooth of claim 12 , wherein:
the first projection comprises a first face perpendicular to a plane of symmetry and facing the first direction of rotation when the snow tooth is attached to the shaft of the snow tiller, and the second projection comprises a second face facing the first direction of rotation when the snow tooth is attached to the shaft of the snow tiller, an extension surface of the second face being greater than an extension surface of the first face.

15 . A snow tooth comprising:
a first projection having a first height and a first radial height, and a second projection having a second height different from the first height and a second radial height greater than the first radial height, wherein when the snow tooth is attached to a shaft of a snow tiller and the shaft rotates in a first direction of rotation, the first projection sinks into a snowpack before the second projection.

16 . The snow tooth of claim 15 , further comprising:
a first cutting portion, and a second cutting portion, wherein when the snow tooth is attached to the shaft of the snow tiller, the first cutting portion and the second cutting portion are each facing in the first direction of rotation and are separated by the first projection such that when the shaft rotates in the first direction of rotation, the first cutting portion sinks into the snowpack before the second cutting portion.

17 . The snow tooth of claim 15 , wherein:
the first projection comprises a first face perpendicular to a plane of symmetry and facing the first direction of rotation when the snow tooth is attached to the shaft of the snow tiller, and the second projectio

Assignees

• Prinoth Spa

Inventors

• Kirchmair Martin
• Unterholzner Markus
• Insam Mirko

Classifications

• A01B33/021

  with rigid tools · CPC title

• E01H4/02 Primary

  for sporting purposes, e.g. preparation of ski trails; {Construction of artificial surfacings for snow or ice sports (construction of ice skating rinks E01C13/102); Trails specially adapted for on-the-snow vehicles}, e.g. devices adapted for ski-trails (production of snow or ice for winter sports or similar recreational purposes F25C3/00) · CPC title