Earth working – Having tool overload shift controlled by a fluid pressure...
Patent
1998-06-26
1999-09-21
Novosad, Christopher J.
Earth working
Having tool overload shift controlled by a fluid pressure...
172263, A01B 6104
Patent
active
059541393
ABSTRACT:
Soil tillage apparatus with a hydraulic reset mechanism has a rigid vertical shank mounted to an elongate arm fixed below a lower plate which is pivotable upon an upper plate. The upper plate is adapted for mounting to an agricultural tool bar. A hydraulic cylinder is vertically mounted to the upper plate and is biased by pressurized hydraulic fluid to resist extension of the ram therefrom. The hydraulic cylinder is pivotal upon the upper plate and the ram is fixed by a pin to the elongate arm. A pressure reducing/relieving valve is adjustable to supply a fixed hydraulic fluid pressure to the hydraulic cylinder at all times.
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Harms Allan L.
Novosad Christopher J.
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