ZA745275B - Cyclic pressure responsive means with plural diaphragms - Google Patents

Cyclic pressure responsive means with plural diaphragms

Info

Publication number
ZA745275B
ZA745275B ZA00745275A ZA745275A ZA745275B ZA 745275 B ZA745275 B ZA 745275B ZA 00745275 A ZA00745275 A ZA 00745275A ZA 745275 A ZA745275 A ZA 745275A ZA 745275 B ZA745275 B ZA 745275B
Authority
ZA
South Africa
Prior art keywords
pressure responsive
responsive means
cyclic pressure
plural diaphragms
diaphragms
Prior art date
Application number
ZA00745275A
Inventor
R Nelson
Original Assignee
R Nelson
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by R Nelson filed Critical R Nelson
Publication of ZA745275B publication Critical patent/ZA745275B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/242—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow operated by one particular pressure-time function
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
    • G01F23/16—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid
    • G01F23/164—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid using a diaphragm, bellow as transmitting element
ZA00745275A 1973-09-10 1974-08-16 Cyclic pressure responsive means with plural diaphragms ZA745275B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US395520A US3859484A (en) 1973-09-10 1973-09-10 Cyclic pressure switch with plural diaphrams

Publications (1)

Publication Number Publication Date
ZA745275B true ZA745275B (en) 1975-08-27

Family

ID=23563393

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00745275A ZA745275B (en) 1973-09-10 1974-08-16 Cyclic pressure responsive means with plural diaphragms

Country Status (9)

Country Link
US (1) US3859484A (en)
JP (1) JPS51124462A (en)
BE (1) BE819691A (en)
CA (1) CA1020053A (en)
CH (1) CH594238A5 (en)
DE (1) DE2443236A1 (en)
FR (1) FR2243429B3 (en)
GB (1) GB1459607A (en)
ZA (1) ZA745275B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946176A (en) * 1974-12-04 1976-03-23 Dresser Industries, Inc. Differential pressure switch
US4081636A (en) * 1976-03-03 1978-03-28 Johnson Controls, Inc. Differential pressure cutout switch
US4281667A (en) * 1976-06-21 1981-08-04 Cosman Eric R Single diaphragm telemetric differential pressure sensing system
US4206761A (en) * 1976-06-21 1980-06-10 Cosman Eric R Pressure-balanced telemetric pressure sensing method
US4206762A (en) * 1976-06-21 1980-06-10 Cosman Eric R Telemetric differential pressure sensing method
US4281666A (en) * 1976-06-21 1981-08-04 Cosman Eric R Single diaphragm pressure-balanced telemetric pressure sensing system
US4140436A (en) * 1977-08-19 1979-02-20 Virginia Chemicals Inc. Pressure control device for fluid systems
DE4023611A1 (en) * 1990-07-25 1992-02-06 Centra Buerkle Gmbh & Co Liquid level sensor with pressure tight sealed immersion tube - has pressure sensor sealing tube top and float body exerting pressure greater than that of enclosed gas
US7191792B2 (en) * 2003-09-19 2007-03-20 Ingersoll-Rand Company Compressor assembly
KR101651589B1 (en) * 2016-06-28 2016-08-26 김민수 BOV valve using Differential pressure of air
US10768037B2 (en) 2017-06-12 2020-09-08 Raytheon Technologies Corporation Oil level sensor guide
PL72062Y1 (en) * 2017-12-15 2021-07-12 Marek Bronowski Suction nozzle (suction cup) based negative pressure sensor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134332A (en) * 1962-03-19 1964-05-26 Robert E Nelson Pump and liquid level regulator
US3127586A (en) * 1962-06-01 1964-03-31 Chrysler Corp Lubrication warning signal
US3246094A (en) * 1963-12-13 1966-04-12 Holley Carburetor Co Delayed return pressure actuated device
US3535479A (en) * 1968-06-07 1970-10-20 Koehler Dayton Time delay pressure switch
US3784772A (en) * 1971-10-07 1974-01-08 J Nelson Fluid pressure actuated switch with prestressed diaphragm
JPS556178A (en) * 1978-06-29 1980-01-17 Mitsubishi Heavy Ind Ltd Air conditioner
EP0161901B1 (en) * 1984-05-18 1993-12-01 New England Medical Center Hospitals, Inc. Human il-1 cDNA sequences encoding biologically-active human il-1 proteins

Also Published As

Publication number Publication date
JPS51124462A (en) 1976-10-29
FR2243429A1 (en) 1975-04-04
GB1459607A (en) 1976-12-22
CH594238A5 (en) 1977-12-30
BE819691A (en) 1974-12-31
FR2243429B3 (en) 1977-06-17
AU7305774A (en) 1976-03-11
CA1020053A (en) 1977-11-01
DE2443236A1 (en) 1975-03-20
US3859484A (en) 1975-01-07

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