Electricity: circuit makers and breakers – Fluid pressure – Diaphragm
Patent
1989-07-17
1991-11-26
Wayner, William E.
Electricity: circuit makers and breakers
Fluid pressure
Diaphragm
73722, 200835, G01L 910, H01H 3540
Patent
active
050685031
ABSTRACT:
A sensor or regulator capable of operating at high absolute pressures and for measurement of pressure, especially pressure differential, or liquid level, is disclosed and has a member which moves in response to pressure differential and being coupled directly to a diaphragm via a lever linkage or which is displaceable by a float and which is juxtaposed with an inductive proximity switch responsive to movement of the member where the proximity switch can be mounted directly in a pressure-retentive wall, a sight glass or like pressurizable partition partition need not be provided. In the preferred construction, however, such a glass, sealed in the pressure wall of the housing, is interposed between the inductive proximity switch and the movable member to which that proximity switch responds. A method of controlling oil/refrigerant mixtures in a refrigerating plant is also disclosed.
REFERENCES:
patent: 2339847 (1944-01-01), Ellison
patent: 2444163 (1948-06-01), Kocmich
patent: 2742544 (1956-04-01), Lovick
patent: 3042769 (1962-07-01), Campbell
patent: 3368173 (1968-02-01), Wolford
patent: 3786211 (1974-01-01), Popp
patent: 3898403 (1975-08-01), Grayson et al.
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