Suction apparatus

Details Suction apparatus Suction apparatus

1998-10-15

2000-05-23

Cherry, Johnny D.

Handling: hand and hoist-line implements

Utilizing fluid pressure

Venturi effect

294907, B25J 1506

Patent

active

060657898

ABSTRACT:
A suction apparatus includes an opening/closing valve for supplying a negative pressure fluid to a pad section when one end of a valve rod abuts against a workpiece to make a change from a valve-closed state into a valve-opened state, and a lead switch for detecting that the opening/closing valve is changed from the valve-closed state into the valve-opened state. Once the lead switch is in the ON state, it is possible to detect that the workpiece is certainly attracted by the pad section.

REFERENCES:
patent: 3219380 (1965-11-01), Carliss
patent: 3696596 (1972-10-01), Wegscheid
patent: 3923177 (1975-12-01), Horton
patent: 4266905 (1981-05-01), Birk et al.
patent: 4730861 (1988-03-01), Spencer
patent: 5139245 (1992-08-01), Bruns et al.
patent: 5183670 (1993-02-01), Trudeau
patent: 5201838 (1993-04-01), Roudaut

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