GB2042799B - Tuning fork type piezo-electric vibrator - Google Patents

Tuning fork type piezo-electric vibrator

Info

Publication number
GB2042799B
GB2042799B GB7941622A GB7941622A GB2042799B GB 2042799 B GB2042799 B GB 2042799B GB 7941622 A GB7941622 A GB 7941622A GB 7941622 A GB7941622 A GB 7941622A GB 2042799 B GB2042799 B GB 2042799B
Authority
GB
United Kingdom
Prior art keywords
tuning fork
fork type
electric vibrator
type piezo
piezo
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
GB7941622A
Other versions
GB2042799A (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.)
Suwa Seikosha KK
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 JP15018678A external-priority patent/JPS5575320A/en
Priority claimed from JP15018278A external-priority patent/JPS5575318A/en
Priority claimed from JP15018378A external-priority patent/JPS5575319A/en
Application filed by Suwa Seikosha KK filed Critical Suwa Seikosha KK
Publication of GB2042799A publication Critical patent/GB2042799A/en
Application granted granted Critical
Publication of GB2042799B publication Critical patent/GB2042799B/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 devices; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/21—Crystal tuning forks
    • H03H9/215—Crystal tuning forks consisting of quartz
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus 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
    • H03H3/04—Apparatus 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)
GB7941622A 1978-12-04 1979-12-03 Tuning fork type piezo-electric vibrator Expired GB2042799B (en)

Applications Claiming Priority (3)

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

Publications (2)

Publication Number Publication Date
GB2042799A GB2042799A (en) 1980-09-24
GB2042799B true GB2042799B (en) 1983-02-02

Family

ID=27319878

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7941622A Expired GB2042799B (en) 1978-12-04 1979-12-03 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
GB2042799A (en) 1980-09-24
HK87685A (en) 1985-11-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19981203