GB901195A - Electromechanical transducers - Google Patents

Electromechanical transducers

Info

Publication number
GB901195A
GB901195A GB435161A GB435161A GB901195A GB 901195 A GB901195 A GB 901195A GB 435161 A GB435161 A GB 435161A GB 435161 A GB435161 A GB 435161A GB 901195 A GB901195 A GB 901195A
Authority
GB
United Kingdom
Prior art keywords
plug
housing
tube
spigot
supported
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
GB435161A
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.)
Clevite Corp
Original Assignee
Clevite Corp
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 Clevite Corp filed Critical Clevite Corp
Publication of GB901195A publication Critical patent/GB901195A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/09—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up
    • G01P15/0915—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up of the shear mode type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
    • B06B1/0655—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element of cylindrical shape
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

901,195. Electric transducers. CLEVITE CORPORATION. Feb. 6, 1961 [March 11, 1960], No. 4351/61. Class 40 (1). [Also in Groups XXXIX and XL (b)] An accelerometer or strain gauge comprises a longitudinally polarized tube 15 of ceramic piezoelectric material, e.g. barium titanate, provided with electrodes 20, 22 on inner and outer cylindrical surfaces and supported from at least one of these surfaces. As shown, the element is supported by a nickel-iron plug 14 and responds to shear stress caused by axial movement of the plug. A threaded shank 13 of the plug enables attachment to a piece of apparatus whose behaviour is being investigated. The inertia of the element may be increased by surrounding it by a massive metal sleeve 36. Copper electrodes formed by electrodeposition may be used. Contact between the plug 14 and the inner electrode may be improved by knurling the plug and filling the interstices between the plug and the electrode with a conducting cement. Sensitivity to lateral forces may be reduced by ensuring that the electric axis of the tube is strictly parallel with its electric axis. This may be done by bending the axis of the supporting spigot 14. A flange 34 of the spigot may be hermetically sealed to a housing 28 which is provided with a further seal 33 at its other extremity. Electrical connections are made to the housing and to the sleeve 36. In a modification (Fig. 3, not shown), the ceramic tube 15 is supported by a sleeve which fits closely between the tube and the housing. The spigot is replaced by a close-fitting metallic core which is unattached to the housing and merely provides inertia. The housing is attached to the apparatus being investigated by an external thread.
GB435161A 1960-03-11 1961-02-06 Electromechanical transducers Expired GB901195A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1429560A 1960-03-11 1960-03-11

Publications (1)

Publication Number Publication Date
GB901195A true GB901195A (en) 1962-07-18

Family

ID=21764617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB435161A Expired GB901195A (en) 1960-03-11 1961-02-06 Electromechanical transducers

Country Status (1)

Country Link
GB (1) GB901195A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014744A1 (en) * 1979-02-20 1980-09-03 Kistler Instrumente AG Method of making a piezoelectric transducer
FR2550346A1 (en) * 1983-08-04 1985-02-08 Marchal Equip Auto Piezoelectric accelerometer
GB2238120A (en) * 1989-10-21 1991-05-22 British Nuclear Fuels Plc Corrosion monitoring using a piezo-electric crystal on a solid probe
AT505303B1 (en) * 2007-08-02 2008-12-15 Piezocryst Advanced Sensorics POWER SENSOR
CN114441802A (en) * 2020-11-02 2022-05-06 基斯特勒控股公司 Acceleration sensor
WO2024038395A1 (en) * 2022-08-16 2024-02-22 Otsuka Medical Devices Co., Ltd. Air-backed transducers for ultrasound denervation and systems that use air-backed transducers

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014744A1 (en) * 1979-02-20 1980-09-03 Kistler Instrumente AG Method of making a piezoelectric transducer
FR2550346A1 (en) * 1983-08-04 1985-02-08 Marchal Equip Auto Piezoelectric accelerometer
GB2238120A (en) * 1989-10-21 1991-05-22 British Nuclear Fuels Plc Corrosion monitoring using a piezo-electric crystal on a solid probe
GB2238120B (en) * 1989-10-21 1993-09-08 British Nuclear Fuels Plc Corrosion monitoring
AT505303B1 (en) * 2007-08-02 2008-12-15 Piezocryst Advanced Sensorics POWER SENSOR
CN114441802A (en) * 2020-11-02 2022-05-06 基斯特勒控股公司 Acceleration sensor
WO2024038395A1 (en) * 2022-08-16 2024-02-22 Otsuka Medical Devices Co., Ltd. Air-backed transducers for ultrasound denervation and systems that use air-backed transducers

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