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US 4,391,051 AGranted
Machine arrangement for forming tracks and/or levelling surfaces related to cross-country ski trails or downhill ski slopes
OwnerAnton R. Bachlerinventor
Life of this patent
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OwnerAnton R. Bachlerinventor
Estimating the term…
An apparatus for making ski tracks and/or levelling ski slopes is mounted in front of a driving vehicle so as to be freely vertically movable relative to the vehicle to adjust its position to varying snow heights encountered in treating the snow cover. Front and rear supports such as sleds or rollers are pivotally mounted on the frame and support the apparatus on the snow cover. A rotating cutting tool for treating the snow is mounted on an arm which is pivotally joined to the frame, to allow the cutting tool to swing upward and downward relative to the frame in response to varying snow heights. The cutting tool support arm may be resiliently mounted to bias the cutting tool in a downward direction to provide a flatter snow surface. At least one of the front and rear supports may be swingably mounted similarly to the cutting tool. The apparatus produces a flatter snow cover in areas of varying length of waves in the snow surface.
Apparatus for treating a snow cover of varying height to make tracks for ski trails and/or to level surfaces for ski slopes and adapted to be attached to and positioned in front of a driving vehicle, comprising a frame, at least one front support, at least one rear support, said front and rear supports being adapted to contact the snow cover and support the apparatus thereon, pivot means for connecting said front and rear supports to said frame, cutting means connected to said frame between said front and rear supports for treating the snow cover, and coupling means for attaching said frame to the driving vehicle, said coupling means being responsive to the height of the snow cover relative to the driving vehicle whereby said frame and thereby said cutting means may move vertically relative to the driving vehicle to adjust their vertical position to the height of the snow cover.
Apparatus for treating a snow cover of varying height to make tracks for ski trails and/or level surfaces for ski slopes and adapted to be attached to and positioned in front of a driving vehicle for driving said apparatus in a forward direction, comprising a frame, at least one front support and at least one rear support for contacting the snow cover and supporting the apparatus thereon, pivot means for pivotally connecting said front and rear supports to said frame, coupling means for attaching said frame to the driving vehicle, said coupling means being responsive to the height of the snow cover whereby the apparatus may move vertically relative to the driving vehicle to adjust its position to the varying height of the snow cover, said coupling means being adjustable so as to allow either preselection of a vertical position of said frame relative to the driving vehicle or free movement of said frame in a vertical direction relative to the driving vehicle, and cutting means connected to said frame between said front and rear supports for treating the snow cover, the connection between said cutting means and said frame including means for biasing said cutting means in a downward direction relative to said frame to yieldingly resist upward movement of said cutting means relative to said frame caused by increased height of the snow cover relative to said frame.
Dependencies are inferred from the claim text.