Flexible rotary snow tiller
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Nov 26, 1991
Grant Date -
N/A
app pub date -
Apr 21, 1987
filing date -
Apr 21, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The flexible tiller has a center and two end sections, each including a cutter bar, frame, apron and grooming bar. The two tiller end sections are connected flexibly to the ends of the center section by frame to frame hinges and by cutter to cutter universal joints, so that the end sections can rotate freely about the hinges. The tiller center section is secured to the towing mechanism to oscillate about a central horizontal axis in the direction of travel. The oscillating center section and the two pivotally attached end sections cooperate to enable the tiller to closely conform to and thoroughly groom rolling snow paths without reducing them to flat ones. The rolling paths are enjoyable to ski, and are slower and safer. A controllable hydraulic ram is mounted to act across each hinge, so that the operator may select the degree of bending permitted at each hinge, and may hydraulically lock it into selected position, if desired.
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