VIBRATORY CABLE PLOW
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United States of America Patent
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Sep 8, 2015
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Sep 8, 2014
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Abstract
A vibratory plow has a lift bracket. The lift bracket couples to an upper link by an upper spring having an upper energy absorptive member. The upper spring and upper energy absorptive member are configured to limit upper link movement relative to the lift bracket in a first direction. The lift bracket is coupled to the upper link by a lower spring having a lower energy absorptive member; the lower spring and lower energy absorptive member are configured to limit upper link movement relative to the lift bracket in a direction opposite the first direction. The upper link is coupled to a shaker box which is attached to a plow blade. The shaker box is configured to travel from a baseline position a first distance greater than two inches in the first direction before the upper spring compresses enough that the upper energy absorptive member dampens shaker box movement.
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