Vacuum break device

Details Vacuum break device Vacuum break device

1976-07-30

1978-07-04

Wayner, William E.

Automatic temperature and humidity regulation

Motors

Fluid-operated

92 48, 236101C, 261234, 261 39B, G05D 2301

Patent

active

040984591

ABSTRACT:
A double diaphragm, two stage vacuum break device in which the vacuum break plunger operates in a first stage in response to movement of one diaphragm assembly and in a second stage in response to movement of a pair of diaphragm assemblies. Metering valves are employed to cause delay of movement of the vacuum break devices in each of its ranges and delay can be eliminated from a selected one or both of the stages of movement by omitting a valve member. The stages of movement are under the control of separate sources of vacuum, a selected one of which may be under control of a temperature responsive valve. The range of movement of the plunger in its two stages of operation may be adjusted by mechanical means or a member responsive to temperature.

REFERENCES:
patent: 2954022 (1960-09-01), Mick
patent: 3433132 (1969-03-01), James
patent: 3752450 (1973-08-01), Charron et al.
patent: 3831567 (1974-08-01), Freismuth et al.
patent: 3915132 (1975-10-01), Thornburgh
patent: 3923427 (1975-12-01), Uyeda
patent: 3956433 (1976-05-01), Garcea
patent: 3965223 (1976-06-01), Benjamin

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