GB1258034A - - Google Patents
Info
- Publication number
- GB1258034A GB1258034A GB1258034DA GB1258034A GB 1258034 A GB1258034 A GB 1258034A GB 1258034D A GB1258034D A GB 1258034DA GB 1258034 A GB1258034 A GB 1258034A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transducers
- drive
- sheet
- tine
- pick
- 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
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 230000010355 oscillation Effects 0.000 abstract 2
- 235000014676 Phragmites communis Nutrition 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- OCDRLZFZBHZTKQ-NMUBGGKPSA-N onetine Chemical compound C[C@@H](O)[C@@]1(O)C[C@@H](C)[C@@](C)(O)C(=O)OC\C2=C\CN(C)CC[C@@H](OC1=O)C2=O OCDRLZFZBHZTKQ-NMUBGGKPSA-N 0.000 abstract 1
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
- H03H9/24—Constructional features of resonators of material which is not piezoelectric, electrostrictive, or magnetostrictive
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
- G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
- G04C3/101—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
- G04C3/102—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details of the mechanical oscillator or of the coil
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
Abstract
1,258,034. Oscillator circuits. BUNKERRAMO CORP. 2 June, 1970 [23 July, 1969], No. 26464/70. Heading H3F. [Also in Divisions G3, G5 and H2] A vibrator structure comprising a pair of metallic tine members integral with a base portion is formed by stamping out a U-shaped aperture in a thin metallic sheet, as shown in Fig. 1. The portion 14 of the sheet defines one tine member, and the portions 12a, 12b and 16 together define the other tine member, the remaining portion 22 defining the base. The sheet 10 may be in the form of a bi-metal laminated sheet, one lamina being made of a material from a class of high nickel content alloys having a positive temperature coefficient of elasticity, and the other lamina being made of a material having a negative coefficient of elasticity. Holes, such as 20, may be formed in either or both tine members to equalize the resonant frequencies of the tine members, or a weight, such as 18, may be added. Alternatively, the shape of the aperture 15 may be made suitable to achieve this end. Piezo-electric transducers 48, 50, 52, as shown on Fig. 8, may be attached at the base, the pick-up transducers 50, 52 providing an output signal via amplifier 53<SP>1</SP> to the drive transducer 48, thus sustaining "fork mode" oscillations of the tuning fork. These oscillations may be fed via 54 through another amplifier to drive an electric clock (not shown). The two pick-up transducers 50, 52 are arranged in an out-of-phase relationship so any "reed mode" vibrations of the tuning fork, caused by spurious vibrational forces, are cancelled. In this.arrangement, transducers 50, 52 are located remotely enough from the drive-transducer 48 to minimize strain coupling between the drive and pick-up transducers. Electromagnetic transducers may also be used in this arrangement, either in combination with piezo-electric transdncers, or instead of them.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84392369A | 1969-07-23 | 1969-07-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1258034A true GB1258034A (en) | 1971-12-22 |
Family
ID=25291340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1258034D Expired GB1258034A (en) | 1969-07-23 | 1970-06-03 |
Country Status (6)
Country | Link |
---|---|
US (1) | US3636810A (en) |
JP (1) | JPS4829055B1 (en) |
AR (1) | AR192557A1 (en) |
DE (1) | DE2030123A1 (en) |
FR (1) | FR2053930A5 (en) |
GB (1) | GB1258034A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3759133A (en) * | 1972-01-24 | 1973-09-18 | Bunker Ramo | Vibrator structure and method and apparatus for adjusting the frequency thereof |
US4004166A (en) * | 1975-03-12 | 1977-01-18 | Nihon Dempa Kogyo Co., Ltd. | Method for stabilizing the vibration frequency of a tuning fork-type quartz crystal oscillator |
US5227572A (en) * | 1991-09-09 | 1993-07-13 | Cusack John F | Titanium reed for musical instruments |
US6064169A (en) * | 1995-10-11 | 2000-05-16 | The Charles Stark Draper Laboratory, Inc. | Motor amplitude control circuit in conductor-on-insulator tuning fork gyroscope |
US5987987A (en) | 1997-04-14 | 1999-11-23 | Denso Corporation | Angular velocity sensor, related method for manufacturing the sensor, and piezoelectric vibrator element used in this sensor |
WO2017110126A1 (en) * | 2015-12-21 | 2017-06-29 | 株式会社村田製作所 | Resonator and resonance device |
-
1969
- 1969-07-23 US US843923A patent/US3636810A/en not_active Expired - Lifetime
-
1970
- 1970-06-03 GB GB1258034D patent/GB1258034A/en not_active Expired
- 1970-06-17 FR FR7022391A patent/FR2053930A5/fr not_active Expired
- 1970-06-18 JP JP45053158A patent/JPS4829055B1/ja active Pending
- 1970-06-18 AR AR229417A patent/AR192557A1/en active
- 1970-06-18 DE DE19702030123 patent/DE2030123A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS4829055B1 (en) | 1973-09-06 |
AR192557A1 (en) | 1973-02-28 |
DE2030123A1 (en) | 1971-02-04 |
FR2053930A5 (en) | 1971-04-16 |
US3636810A (en) | 1972-01-25 |
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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 |