Vacuum generator

Details Vacuum generator Vacuum generator

1976-06-22

1978-05-16

Freeh, William L.

Pumps

One fluid pumped by contact or entrainment with another

Jet

417189, F04F 552

Patent

active

040896226

ABSTRACT:
A vacuum generator of the ejector type includes a control valve subjected to frictional damping forces wherein the frictional damping forces are varied in response to changes in pressure differentials in the device such that the control valve is enabled to move quickly between opened and closed conditions thereby avoiding throttling of the motive fluid.

REFERENCES:
patent: 1159957 (1915-11-01), Kneass
patent: 1180017 (1916-04-01), Davenport
patent: 1441651 (1923-01-01), Anderson et al.
patent: 2340671 (1944-02-01), Lingenbrink
patent: 2765185 (1956-10-01), Mott
patent: 3435841 (1969-04-01), Williams et al.
patent: 3593958 (1971-07-01), Mueller

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