FR1377422A - Dispositif à ultrasons - Google Patents

Dispositif à ultrasons

Info

Publication number
FR1377422A
FR1377422A FR947672A FR947672A FR1377422A FR 1377422 A FR1377422 A FR 1377422A FR 947672 A FR947672 A FR 947672A FR 947672 A FR947672 A FR 947672A FR 1377422 A FR1377422 A FR 1377422A
Authority
FR
France
Prior art keywords
ultrasonic device
ultrasonic
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
FR947672A
Other languages
English (en)
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.)
AT&T Inc
Original Assignee
Western Electric Co Inc
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
Priority claimed from US226381A external-priority patent/US3307120A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to FR947672A priority Critical patent/FR1377422A/fr
Application granted granted Critical
Publication of FR1377422A publication Critical patent/FR1377422A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
    • H01F1/0311—Compounds
    • H01F1/0313—Oxidic compounds
    • H01F1/0315—Ferrites
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/13—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
    • H03H9/133—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials for electromechanical delay lines or filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/30—Time-delay networks
    • H03H9/36—Time-delay networks with non-adjustable delay time

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
FR947672A 1962-09-26 1963-09-16 Dispositif à ultrasons Expired FR1377422A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR947672A FR1377422A (fr) 1962-09-26 1963-09-16 Dispositif à ultrasons

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US226381A US3307120A (en) 1962-09-26 1962-09-26 Ultrasonic wave device
FR947672A FR1377422A (fr) 1962-09-26 1963-09-16 Dispositif à ultrasons

Publications (1)

Publication Number Publication Date
FR1377422A true FR1377422A (fr) 1964-11-06

Family

ID=26203399

Family Applications (1)

Application Number Title Priority Date Filing Date
FR947672A Expired FR1377422A (fr) 1962-09-26 1963-09-16 Dispositif à ultrasons

Country Status (1)

Country Link
FR (1) FR1377422A (fr)

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