Pneumatic valve for braking systems

Details Pneumatic valve for braking systems Pneumatic valve for braking systems

1987-04-02

1987-12-15

Rosenthal, Arnold

Fluid handling

Convertible

Unit orientable in a single location between plural positions

1376275, 251 634, 251 62, F16K 1122, F16K 31143, B60T 1506

Patent

active

047125772

ABSTRACT:
The valve comprises a body with an inlet connector and an outlet connector for connection to a pressure source and a pneumatic circuit respectively, and with an obturator valve which controls communication between the connectors. The valve has a control device including a piston sealingly slidable in a guide portion of the body between a first chamber which can be put into communication with a pressure source and a second chamber housing a valve so that the piston can move and open the valve under the effect of the pressure in the first chamber. The guided portion of the piston is generally cylindrical and has a smaller cross-section than the passage cross-section of the guide portion of the body. An intermediate member is sealingly interposed between the guided portion of the piston and the guide portion of the body. The intermediate member has stop means and is locatable between the wall of the body and the guided portion of the piston in the first or second orientations, in which the stop means respectively allow and prevent the movement with the piston under the effect of the pressure in the chamber.

REFERENCES:
patent: 3464742 (1969-09-01), Cruse
patent: 3606494 (1971-09-01), Frank et al.
patent: 4258741 (1981-03-01), Roger

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