FR2499716B1 - - Google Patents

Info

Publication number
FR2499716B1
FR2499716B1 FR8202273A FR8202273A FR2499716B1 FR 2499716 B1 FR2499716 B1 FR 2499716B1 FR 8202273 A FR8202273 A FR 8202273A FR 8202273 A FR8202273 A FR 8202273A FR 2499716 B1 FR2499716 B1 FR 2499716B1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR8202273A
Other versions
FR2499716A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Purolator Products Co LLC
Original Assignee
Purolator Products Co LLC
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 Purolator Products Co LLC filed Critical Purolator Products Co LLC
Publication of FR2499716A1 publication Critical patent/FR2499716A1/fr
Application granted granted Critical
Publication of FR2499716B1 publication Critical patent/FR2499716B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/143—Filter condition indicators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
    • G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/08—Means for indicating or recording, e.g. for remote indication
    • G01L19/12—Alarms or signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/14—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means involving the displacement of magnets, e.g. electromagnets
    • 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
    • H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Sampling And Sample Adjustment (AREA)
  • External Artificial Organs (AREA)
FR8202273A 1981-02-09 1982-02-05 Dispositif indicateur de pression differentielle a compensation thermique Granted FR2499716A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/232,485 US4426952A (en) 1981-02-09 1981-02-09 Temperature compensated differential pressure indicating device

Publications (2)

Publication Number Publication Date
FR2499716A1 FR2499716A1 (fr) 1982-08-13
FR2499716B1 true FR2499716B1 (fr) 1984-12-07

Family

ID=22873307

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8202273A Granted FR2499716A1 (fr) 1981-02-09 1982-02-05 Dispositif indicateur de pression differentielle a compensation thermique

Country Status (8)

Country Link
US (1) US4426952A (fr)
JP (1) JPS57160039A (fr)
AU (1) AU555253B2 (fr)
CA (2) CA1176868A (fr)
DE (1) DE3204309A1 (fr)
FR (1) FR2499716A1 (fr)
GB (1) GB2092752B (fr)
IT (1) IT1149539B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563906A (en) * 1983-11-23 1986-01-14 Camtech, Inc. Load measurement apparatus including miniature instrumented hydrostatic cell
AU3423184A (en) * 1984-01-12 1985-07-18 Facet Enterprises Inc. Temperature sensitive differential pressure indicating device
US4645887A (en) * 1985-12-02 1987-02-24 Facet Enterprises, Inc. Pressure differential bypass sensor switch
DE3700593A1 (de) * 1986-01-13 1987-07-16 Sharp Kk Rotations-entwicklungsvorrichtung
US4729339A (en) * 1986-04-21 1988-03-08 Facet Enterprises, Inc. Pressure differential indicator with non-mechanical thermal lockout
US4867095A (en) * 1988-04-05 1989-09-19 Parker Hannifin Corporation Differential pressure indicator
US5188728A (en) * 1989-10-31 1993-02-23 Le Bozec Et Gautier Clogging display with shape memory alloy spring actuator
FR2659141B1 (fr) * 1990-03-01 1994-03-25 Lebozec Gautier Indicateur de colmatage.
GB2297620B (en) * 1995-02-06 1998-10-07 Pall Corp Filter assemblies comprising differential pressure indicators
US20050284802A1 (en) * 2004-06-23 2005-12-29 Jankuski George A Filtering device with integral filter status indicator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125062A (en) * 1964-03-17 Differential pressure responsive device
US2942572A (en) * 1958-06-17 1960-06-28 Pall Corp Magnetic pressure indicator
US3140690A (en) * 1963-12-04 1964-07-14 Pall Corp Magnetic pressure indicator
GB1207866A (en) * 1964-09-25 1970-10-07 Puralator Inc Differential fluid pressure indicator
US3529269A (en) * 1966-08-01 1970-09-15 William P Gardiner Magnetic switch
GB1286808A (en) * 1968-10-14 1972-08-23 Btr Industries Ltd Improvements in or relating to pressure indicating devices
US3785332A (en) * 1972-01-31 1974-01-15 Pall Corp Magnetic pressure indicator
US3974795A (en) * 1975-06-18 1976-08-17 Facet Enterprises, Inc. Filter Products Division Differential pressure indicating device

Also Published As

Publication number Publication date
IT8219501A0 (it) 1982-02-08
CA1176868A (fr) 1984-10-30
GB2092752B (en) 1984-12-12
US4426952A (en) 1984-01-24
AU7957882A (en) 1982-08-19
IT1149539B (it) 1986-12-03
FR2499716A1 (fr) 1982-08-13
DE3204309A1 (de) 1982-09-30
DE3204309C2 (fr) 1989-03-30
GB2092752A (en) 1982-08-18
JPS57160039A (en) 1982-10-02
CA1176485A (fr) 1984-10-23
AU555253B2 (en) 1986-09-18

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Legal Events

Date Code Title Description
ST Notification of lapse