Reversible plow
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 23, 1982
Grant Date -
N/A
app pub date -
Apr 24, 1980
filing date -
Apr 26, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A frame of a reversible plow having plow shares that are directed to the right and to the left. The frame is turned by means of a piston connected to a turning shaft of the frame, the turning of the cylinder being controlled by an automatic reversing valve. The valve has a fixed housing and a movable shaft. Peripheral grooves are present in either the housing or shaft through which hydraulic oil is supplied from one side of the piston to the other side thereof.
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Cited Art Landscape
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