[go: up one dir, main page]

GB410429A - Improvements in or relating to piezo-electric devices - Google Patents

Improvements in or relating to piezo-electric devices

Info

Publication number
GB410429A
GB410429A GB34038/33A GB3403833A GB410429A GB 410429 A GB410429 A GB 410429A GB 34038/33 A GB34038/33 A GB 34038/33A GB 3403833 A GB3403833 A GB 3403833A GB 410429 A GB410429 A GB 410429A
Authority
GB
United Kingdom
Prior art keywords
piezo
electric
axis
dec
relating
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
GB34038/33A
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of GB410429A publication Critical patent/GB410429A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/19—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

410,429. Piezo - electric crystals. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL, 79, Boulevard Haussmann, Paris. Dec. 4, 1933, No. 34038. Convention date, Dec. 3, 1932. Drawings to Specification. [Class 40 (v).] A quartz crystal is shaped as a rectangular parallelepiped having the electric axis and one other axis equal to one another, while the length of the. third axis is different, the axes being proportioned so that the frequencies of vibration along them are all equal. A piezo-electric lamina may be built up of a number of crystals cut in the above manner. Specification 383,075 is referred to.
GB34038/33A 1932-12-03 1933-12-04 Improvements in or relating to piezo-electric devices Expired GB410429A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR410429X 1932-12-03

Publications (1)

Publication Number Publication Date
GB410429A true GB410429A (en) 1934-05-17

Family

ID=8897596

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34038/33A Expired GB410429A (en) 1932-12-03 1933-12-04 Improvements in or relating to piezo-electric devices

Country Status (1)

Country Link
GB (1) GB410429A (en)

Similar Documents

Publication Publication Date Title
US3564463A (en) Monolithic piezoelectric filter having mass loaded electrodes for resonation regions acoustically coupled together
GB561088A (en) Improvements in or relating to wave transmission networks
GB479637A (en) Improvements in or relating to piezoelectric crystals
GB479979A (en) Piezo-electric crystal apparatus
GB410429A (en) Improvements in or relating to piezo-electric devices
GB491407A (en) Improvements in or relating to piezoelectric crystal apparatus
GB491277A (en) Improvements in or relating to piezo electric crystal elements
GB918652A (en) Piezoelectric crystal device
GB553121A (en) Piezoelectric crystal apparatus
GB1116690A (en) Piezoelectric quartz elements
GB553050A (en) Piezoelectric crystal elements
GB383075A (en) Improvements in disc-shaped piezo-electric oscillators (or resonators)
GB552835A (en) Piezoelectric crystal apparatus
GB532925A (en) Piezoelectric elements
GB294174A (en) Improvements in or relating to oscillating crystals and processes for the manufacture thereof
GB289471A (en) Improvements relating to piezo-electric crystals
GB555400A (en) Piezoelectric crystal apparatus
GB959462A (en) Improvements in or relating to high frequency electromechanical filters
JPS51126785A (en) Frequency-adjusting method of thickness-shear-crystal vibration use cr ystal piece
AU119039B2 (en) Quartz crystal oscillator
GB294177A (en) Improvements in electric filter circuits
GB571623A (en) Improvements in piezo-electric oscillators
GB552355A (en) Piezoelectric crystal apparatus
GB475482A (en) Improvements relating to piezo-electric crystals
GB394097A (en) Improvements in piezo-electric oscillators or resonators of tourmaline