GB550123A - Improved piezo-electric device for converting pressure variations into potential variations - Google Patents

Improved piezo-electric device for converting pressure variations into potential variations

Info

Publication number
GB550123A
GB550123A GB1524941A GB1524941A GB550123A GB 550123 A GB550123 A GB 550123A GB 1524941 A GB1524941 A GB 1524941A GB 1524941 A GB1524941 A GB 1524941A GB 550123 A GB550123 A GB 550123A
Authority
GB
United Kingdom
Prior art keywords
pressure
variations
piezo
electric device
diaphragm
Prior art date
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
GB1524941A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to GB1524941A priority Critical patent/GB550123A/en
Publication of GB550123A publication Critical patent/GB550123A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
    • G01L23/08—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically
    • G01L23/10—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically by pressure-sensitive members of the piezoelectric type

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

550,123. Piezo-electric crystals. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Nov. 26, 1941, No. 15249. [Class 40 (v)] In a pressure indicator in which pressure is measured in terms of the E.M.F. produced when a piezo-electric crystal is compressed through the medium of a diaphragm, the sensitivity and linearity are increased by subjecting the crystal to a preliminary pressure by means of an adjustable spring, which thus relieves the diaphragm of strain. Pressure is applied through a diaphragm 2 and member 6 to crystals 3, 4 supported by an adjustable member 8. The E.M.F. is taken off by a plate 7 and lead 7A. Preliminary pressure is applied by three dish springs 5 supported on a shoulder on a bush 1 and acting on member 6 the pressure being adjustable by member 8.
GB1524941A 1941-11-26 1941-11-26 Improved piezo-electric device for converting pressure variations into potential variations Expired GB550123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1524941A GB550123A (en) 1941-11-26 1941-11-26 Improved piezo-electric device for converting pressure variations into potential variations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1524941A GB550123A (en) 1941-11-26 1941-11-26 Improved piezo-electric device for converting pressure variations into potential variations

Publications (1)

Publication Number Publication Date
GB550123A true GB550123A (en) 1942-12-23

Family

ID=10055706

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1524941A Expired GB550123A (en) 1941-11-26 1941-11-26 Improved piezo-electric device for converting pressure variations into potential variations

Country Status (1)

Country Link
GB (1) GB550123A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0317163A2 (en) * 1987-11-09 1989-05-24 Texas Instruments Incorporated Cylinder pressure sensor for an internal combustion engine
WO2007000373A1 (en) * 2005-06-29 2007-01-04 Robert Bosch Gmbh Sheathed element glow plug
WO2014067722A1 (en) * 2012-10-30 2014-05-08 Robert Bosch Gmbh Miniaturized combustion chamber pressure sensor having a tension-biased sensor housing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0317163A2 (en) * 1987-11-09 1989-05-24 Texas Instruments Incorporated Cylinder pressure sensor for an internal combustion engine
EP0317163A3 (en) * 1987-11-09 1991-04-17 Texas Instruments Incorporated Cylinder pressure sensor for an internal combustion engine
WO2007000373A1 (en) * 2005-06-29 2007-01-04 Robert Bosch Gmbh Sheathed element glow plug
WO2014067722A1 (en) * 2012-10-30 2014-05-08 Robert Bosch Gmbh Miniaturized combustion chamber pressure sensor having a tension-biased sensor housing

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