Motors: expansible chamber type – Extension of unit having separately controlled working... – Vane
Patent
1998-04-06
2000-09-12
Ryznic, John E.
Motors: expansible chamber type
Extension of unit having separately controlled working...
Vane
91530, 91173, F15B 1118
Patent
active
061161403
ABSTRACT:
The telescoping system includes a first and second fluid motor. The first fluid motor includes a first cylinder and a second cylinder nested in the first cylinder. The second fluid motor includes the second cylinder and a piston disposed in the second cylinder. The second cylinder has a double barrel outer wall forming a hydraulic fluid passageway. A hydraulic control system in the telescoping system includes a single control valve, solenoid valves, and holding valves, and controls extension and retraction of the telescoping system.
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Barthalow Henry D.
Zimmerman Claude R.
Grove U.S. L.L.C.
Ryznic John E.
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