A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
A01B 23/02 (2006.01) A01B 61/04 (2006.01)
Patent
CA 2100612
The invention relates to a grubber tine of a tubular cross-section which, as compared to known grubber tines, gives reduced weight and larger flexure and vibrations when moved through the soil, which gives reduced tractive power. The grubber tine is adpated to escape obstacles within the soil in that the grubber tine is pivotally suspended on a shaft. Boss means is/are attached to the grubber tine through friction forces between boss means and grubber tine at a preferably conical contact face, achieved in that the boss means is/are pressed into holes in the wall of the grubber tine. In the working position, the grubber tine rests against a shaft and is kept in place by means of a safety bolt adapted to be stretched off upon the occurrence of overload. The safety bolt may be combined with a resilient member, such that the grubber tine to a certain degree may yield upon load and then return to working position. Alternatively, the safety bolt may completely be substituted by a biased spring allowing the grubber tine to rotate around the shaft, escaping obstacles and passing over possible obstacles, thereafter returning to working position by means of the spring force.
Kverneland Klepp As
Smart & Biggar
LandOfFree
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