HK87685A - Tuning fork type piezo-electric vibrator - Google Patents

Tuning fork type piezo-electric vibrator

Info

Publication number
HK87685A
HK87685A HK87685A HK87685A HK87685A HK 87685 A HK87685 A HK 87685A HK 87685 A HK87685 A HK 87685A HK 87685 A HK87685 A HK 87685A HK 87685 A HK87685 A HK 87685A
Authority
HK
Hong Kong
Prior art keywords
tuning fork
fork type
electric vibrator
type piezo
piezo
Prior art date
Application number
HK87685A
Inventor
Eishi Momosaki
Shigeru Kogure
Minoru Inoue
Original Assignee
Suwa Seikosha Kk
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 JP15018278A external-priority patent/JPS5575318A/en
Priority claimed from JP15018678A external-priority patent/JPS5575320A/en
Priority claimed from JP15018378A external-priority patent/JPS5575319A/en
Application filed by Suwa Seikosha Kk filed Critical Suwa Seikosha Kk
Publication of HK87685A publication Critical patent/HK87685A/en

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/15Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/21Crystal tuning forks
    • H03H9/215Crystal tuning forks consisting of quartz
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
    • H03H3/04Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
HK87685A 1978-12-04 1985-11-07 Tuning fork type piezo-electric vibrator HK87685A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP15018278A JPS5575318A (en) 1978-12-04 1978-12-04 Tuning fork type oscillator
JP15018678A JPS5575320A (en) 1978-12-04 1978-12-04 Frequency control method for tuning fork type oscillator
JP15018378A JPS5575319A (en) 1978-12-04 1978-12-04 Tuning fork type oscillator

Publications (1)

Publication Number Publication Date
HK87685A true HK87685A (en) 1985-11-15

Family

ID=27319878

Family Applications (1)

Application Number Title Priority Date Filing Date
HK87685A HK87685A (en) 1978-12-04 1985-11-07 Tuning fork type piezo-electric vibrator

Country Status (2)

Country Link
GB (1) GB2042799B (en)
HK (1) HK87685A (en)

Also Published As

Publication number Publication date
GB2042799B (en) 1983-02-02
GB2042799A (en) 1980-09-24

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Legal Events

Date Code Title Description
PE Patent expired