GB1489446A - Electromechanical filter unit - Google Patents

Electromechanical filter unit

Info

Publication number
GB1489446A
GB1489446A GB33389/75A GB3338975A GB1489446A GB 1489446 A GB1489446 A GB 1489446A GB 33389/75 A GB33389/75 A GB 33389/75A GB 3338975 A GB3338975 A GB 3338975A GB 1489446 A GB1489446 A GB 1489446A
Authority
GB
United Kingdom
Prior art keywords
tines
supporting members
filter unit
aug
electromechanical filter
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
GB33389/75A
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.)
Seiko Instruments Inc
Original Assignee
Daini Seikosha Co Ltd
Seiko Instruments and Electronics Ltd
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 Daini Seikosha Co Ltd, Seiko Instruments and Electronics Ltd filed Critical Daini Seikosha Co Ltd
Publication of GB1489446A publication Critical patent/GB1489446A/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
    • H03H9/46—Filters
    • H03H9/48—Coupling means therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
GB33389/75A 1974-08-29 1975-08-11 Electromechanical filter unit Expired GB1489446A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1974103673U JPS5517545Y2 (cg-RX-API-DMAC10.html) 1974-08-29 1974-08-29

Publications (1)

Publication Number Publication Date
GB1489446A true GB1489446A (en) 1977-10-19

Family

ID=14360301

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33389/75A Expired GB1489446A (en) 1974-08-29 1975-08-11 Electromechanical filter unit

Country Status (3)

Country Link
US (1) US4007432A (cg-RX-API-DMAC10.html)
JP (1) JPS5517545Y2 (cg-RX-API-DMAC10.html)
GB (1) GB1489446A (cg-RX-API-DMAC10.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243292A (en) * 1991-10-07 1993-09-07 Xerox Corporation Electrostatic measuring tuning fork and means for limiting mechanical amplitude thereof
US6281619B1 (en) * 1997-05-09 2001-08-28 Citizen Watch Co., Ltd. Vibration gyro
US6437490B1 (en) * 1997-06-13 2002-08-20 Citizen Watch Co., Ltd. Vibration gyroscope
JP4033643B2 (ja) * 2001-06-18 2008-01-16 日本碍子株式会社 圧電／電歪デバイスおよびその製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3106124A (en) * 1961-07-21 1963-10-08 Melpar Inc Tuning forks
JPS44109Y1 (cg-RX-API-DMAC10.html) * 1965-08-30 1969-01-07
GB1229871A (cg-RX-API-DMAC10.html) * 1967-08-24 1971-04-28
JPS478829U (cg-RX-API-DMAC10.html) * 1971-03-02 1972-10-03

Also Published As

Publication number Publication date
US4007432A (en) 1977-02-08
JPS5130443U (cg-RX-API-DMAC10.html) 1976-03-05
JPS5517545Y2 (cg-RX-API-DMAC10.html) 1980-04-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee