Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Patent
1991-08-05
1994-04-19
Look, Edward K.
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
91433, 91445, 91469, F16B 3102
Patent
active
053035496
ABSTRACT:
A counterforce cylinder and piston exert an upward force on the vertically movable slide of a machine. The cylinder pressure line handles reverse flows during operations of the slide. A pilot-operated checkvalve (normally closed) is inserted in the cylinder line between a pressure source and the counterforce cylinder, and is held open during usual operation of the machine. An accumulator is branch-connected to the cylinder line, at a point between the checkvalve and counterforce cylinder. During machine operations, the accumulator stores pressurized fluid; at shutdown of power, the fast-acting checkvalve closes and reliably seals the cylinder line while the accumulator provides pressure to maintain the counterforce cylinder and slide in a substantially constant holding position for several days.
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Cincinnati Milacron T-Bar CNC Machining Centers, Publication No. SP-166, copyright 1989, brochure of Cincinnati Milacron Marketing Company.
Berchtold Merrill E.
Valvano Dean M.
Cincinnati Milacron Inc.
Farrell Thomas M.
Look Edward K.
Lopez F. Daniel
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