A - Human Necessities – 01 – C
Patent
A - Human Necessities
01
C
275/9
A01C 3/06 (2006.01) B60P 1/00 (2006.01)
Patent
CA 1117565
Abstract of the Disclosure A hydraulically operated conveying mechanism for a manure spreader composed of a fore-and-aft shiftable floor extension that is supported on a fixed floor of the spreader box and a transverse vertical push-off supported to shift fore-and-aft on the extension. First and second hydraulic cylinders are used to shift the floor extension and push-off respectively and includes a first cylinder and associated rod with the latter being composed of inner and outer concentric tubes closed at their respective ends and with the inner tube opening into the closed end of the cylinder. The outer tube has a port opening into the cylinder. The second double-acting cylinder that operates the push-off has its opposite ends in fluid communication with the inner tube and outer tubes. A shuttle valve within the main cylinder shifts axially to close the port as fluid is introduced to the closed end of the main cylinder and opens the port as the rod approaches its fully extended position.
338777
Trott Clarence R.
Willer David A.
Borden Ladner Gervais Llp
Deere & Company
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