Pressure regulating circuit

Details Pressure regulating circuit Pressure regulating circuit

1996-07-01

1997-07-08

Lopez, F. Daniel

Motors: expansible chamber type

With signal, indicator or inspection means

91433, 91446, F01B 3112

Patent

active

056449666

ABSTRACT:
A pressure regulating circuit in which the piston of a pneumatic cylinder can attain a balanced condition without requiring any adjustment to a workpiece. In the pressure regulating circuit, the pressure in an oil pressure chamber of a pressure reducing valve equals the pressure in a pressure sensitive oil chamber of a workpiece retention member. The pressure in a pressure sensitive chamber of the pressure reducing valve equals the pressure in the oil pressure chamber. Therefore, the pressure in a piston pressure chamber of a main valve connected to the pressure sensitive chamber equals the pressure in the pressure sensitive oil chamber. When the pressure in a control chamber of the main valve and the pressure in a working chamber of a pneumatic cylinder are respectively balanced with the pressure in the piston pressure chamber, the piston P can attain a balanced condition. Since the pressure in the piston pressure chamber corresponds to the oil pressure in the pressure sensitive oil chamber generated by the workpiece W, the piston P of the pneumatic cylinder can attain a balanced condition without any adjustment.

REFERENCES:
patent: 5065665 (1991-11-01), Kimura
patent: 5125322 (1992-06-01), Hugdahl

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