Vacuum producing device

Details Vacuum producing device Vacuum producing device

2006-11-28

2006-11-28

Chambers, A. Michael (Department: 3753)

Fluid handling

Systems

With pump

C137S832000, C137S907000, C417S187000, C294S064200

Reexamination Certificate

active

07140389

ABSTRACT:
A vacuum producing device (1) possessing a principal suction nozzle unit (2) with a shut off valve (27) on the upstream side thereof and an additional suction nozzle unit (3) connected in parallel to the principal suction nozzle unit (2). While the supply of pressure medium for the principal suction nozzle unit (2) is controlled in a manner dependent on the negative pressure produced by controlling the shut off valve (27), the additional suction nozzle unit (3) remains (3) constantly in operation. This means that a complete build up of vacuum may be ensured in conjunction with a complete switching off of the principal suction nozzle unit (2) together with a resulting air economizing effect.

REFERENCES:
patent: 5188411 (1993-02-01), Golden
patent: 6719536 (2004-04-01), Schmalz et al.
patent: 29903330 (1999-08-01), None
patent: 19808548 (1999-09-01), None
patent: 0540 488 (1993-05-01), None
patent: 61055400 (1986-03-01), None
patent: 06185499 (1991-01-01), None

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