Hitch device for connecting a groomer vehicle and a ski slope snow grooming implement, and control method employing such a hitch device
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United States of America Patent
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Apr 22, 2014
Grant Date -
Jul 25, 2013
app pub date -
Mar 11, 2013
filing date -
Oct 30, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A hitch device for connecting a groomer vehicle having a first frame extending along a first axis, and an implement, in particular a rotary snow tiller, for grooming the snow covering of ski slopes and having a second frame extending crosswise to and symmetrically with respect to a second axis. The hitch device has an arm hinged to the first frame about a third axis perpendicular to the first axis, and about a fourth axis perpendicular to the first and third axis; a first actuator for adjusting the position of the arm about the third axis with respect to the first frame to lift and lower the implement; at least one second actuator for adjusting the position of the arm about the fourth axis with respect to the first frame; a movable coupling movable between the arm and one of the first and second frame; and a third actuator for adjusting the position of the arm in a plane crosswise to the fourth axis.
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