Fluid feeding valve and a vacuum chuck apparatus using same

Details Fluid feeding valve and a vacuum chuck apparatus using same Fluid feeding valve and a vacuum chuck apparatus using same

1985-02-11

1986-07-15

Yeung, James C.

Handling: hand and hoist-line implements

Utilizing fluid pressure

Venturi effect

137102, B66C 102, G05D 700

Patent

active

046002308

ABSTRACT:
A fluid feeding valve, having a valve chamber with a valve member contained movably therein, the valve member being actuated by the pressure difference between fluid receiving port and fluid feeding port to close and open said ports alternately. The fluid feeding valve body also comprises a fluid reservoir communicating with said fluid receiving and feeding ports.
When the fluid receiving port receives the pressurized fluid, the valve member closes the fluid feeding port and the pressurized fluid is stored in the fluid reservoir through the valve chamber, and when the fluid receiving port stops the receiving of fluid, the valve member closes the fluid receiving port and opens the fluid feeding port, and the pressurized fluid stored in the reservoir is fed to the fluid feeding line automatically.
A vacuum chuck apparatus actuated by the air ejector pump and using such fluid feeding valve is also provided, in which when the air ejector pump stops, the pressurized air stored in the fluid reservoir is fed into the suction pad through the fluid feeding valve and the negative pressure remaining therein can be removed rapidly. Thus a quick acting chuck device can be obtained by the use of such fluid feeding valve of very simple construction.

REFERENCES:
patent: 2764174 (1956-09-01), Wilson
patent: 3219380 (1965-11-01), Carliss
patent: 3680582 (1972-08-01), Pauliukonis

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