Vacuum producing device

Details Vacuum producing device Vacuum producing device

2005-02-08

2005-02-08

Yu, Justine R. (Department: 3746)

Pumps

One fluid pumped by contact or entrainment with another

Jet

C417S182000, C417S187000, C294S064200, C294S064200

Reexamination Certificate

active

06851936

ABSTRACT:
A vacuum producing device having an ejector means with a jet nozzle and a receiving nozzle downstream from it. At the outlet end of the receiving nozzle there is a receiving space for the fluid flowing through the receiving nozzle and an exit flow duct extends from it. The exit flow duct is provided with choke means for resetting or variably setting the fluid volumetric flow, leaving by way of the exit flow duct, in order to be able to affect the pressure obtaining in the receiving space.

REFERENCES:
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patent: 4549854 (1985-10-01), Yamamoto
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patent: 4865521 (1989-09-01), Ise et al.
patent: 4880358 (1989-11-01), Lasto
patent: 5007803 (1991-04-01), DiVito et al.
patent: 5887623 (1999-03-01), Nagai et al.
patent: 6575705 (2003-06-01), Akiyama et al.
patent: 38 18 381 (1988-12-01), None
patent: 61 004900 (1986-01-01), None

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