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CH648184GA3 - - Google Patents

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Info

Publication number
CH648184GA3
CH648184GA3 CH793781A CH793781A CH648184GA3 CH 648184G A3 CH648184G A3 CH 648184GA3 CH 793781 A CH793781 A CH 793781A CH 793781 A CH793781 A CH 793781A CH 648184G A3 CH648184G A3 CH 648184GA3
Authority
CH
Switzerland
Prior art keywords
frequency
mode
arms
reducing
masses
Prior art date
Application number
CH793781A
Other languages
French (fr)
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 JP17560480A external-priority patent/JPS5799014A/en
Priority claimed from JP10430481A external-priority patent/JPS585019A/en
Application filed filed Critical
Publication of CH648184GA3 publication Critical patent/CH648184GA3/fr

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
    • H03H9/21—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
    • 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
    • H03H2003/0414—Resonance frequency
    • H03H2003/0492—Resonance frequency during the manufacture of a tuning-fork

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

A tuning fork utilizing elastic coupling between the flexural mode and the torsional mode in which the frequency of the flexural mode is adjusted by adding or reducing masses deposited near the center of the arms in the lengthwise direction and the frequency of the torsional mode is adjusted by adding or reducing masses deposited on the other portions such as the tops of the arms. The positions near the center of the arms in the lengthwise direction are suitably selected so that adding or reducing the masses thereto or therefrom changes only the frequency of the flexural mode changes only and the frequency of the torsional mode is scarcely changed.
CH793781A 1980-12-12 1981-12-11 CH648184GA3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP17560480A JPS5799014A (en) 1980-12-12 1980-12-12 Tuning fork type oscillator
JP10430481A JPS585019A (en) 1981-07-02 1981-07-02 Tuning fork vibrator

Publications (1)

Publication Number Publication Date
CH648184GA3 true CH648184GA3 (en) 1985-03-15

Family

ID=26444807

Family Applications (1)

Application Number Title Priority Date Filing Date
CH793781A CH648184GA3 (en) 1980-12-12 1981-12-11

Country Status (4)

Country Link
US (1) US4498025A (en)
CH (1) CH648184GA3 (en)
DE (1) DE3149171A1 (en)
GB (1) GB2091486B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658175A (en) * 1986-03-26 1987-04-14 The Singer Company-Kearfott Division Vibrating beam force transducer with A-frame beam root and frequency adjusting means
GB2203590B (en) * 1987-04-02 1991-02-06 Stc Plc Resonator manufacture
US5032755A (en) * 1988-03-03 1991-07-16 Motorola, Inc. Method and means for damping modes of piezoelectric vibrators
US4862298A (en) * 1988-03-11 1989-08-29 Magnetic Peripherals Inc. Shock load detection device
US5179028A (en) * 1990-04-20 1993-01-12 Hughes Aircraft Company Antibody coated crystal chemical sensor
US5850117A (en) * 1995-06-15 1998-12-15 Nikon Corporation Vibration Actuator and adjustment method therefor
US6114795A (en) 1997-06-24 2000-09-05 Tdk Corporation Piezoelectric component and manufacturing method thereof
US20040097996A1 (en) 1999-10-05 2004-05-20 Omnisonics Medical Technologies, Inc. Apparatus and method of removing occlusions using an ultrasonic medical device operating in a transverse mode
US6660013B2 (en) * 1999-10-05 2003-12-09 Omnisonics Medical Technologies, Inc. Apparatus for removing plaque from blood vessels using ultrasonic energy
CA2327576C (en) 1999-12-21 2008-09-30 Eta Sa Fabriques D'ebauches Low frequency quartz oscillator device with improved thermal characteristics
ATE235124T1 (en) * 1999-12-21 2003-04-15 Ebauchesfabrik Eta Ag OSCILLATOR ARRANGEMENT FOR A LOW FREQUENCY QUARTZ AND WITH IMPROVED TEMPERATURE BEHAVIOR
US7043969B2 (en) * 2002-10-18 2006-05-16 Symyx Technologies, Inc. Machine fluid sensor and method
CN1706098B (en) * 2003-03-28 2013-01-02 株式会社大真空 Frequency regulating method for tuning fork type vibrator and tuning fork type vibrator frequency-regulated by the method
WO2005084553A1 (en) 2004-02-09 2005-09-15 Omnisonics Medical Technologies, Inc. Apparatus and method for an ultrasonic medical device operating in a torsional mode
EP1713394A1 (en) 2004-02-09 2006-10-25 Omnisonics Medical Technologies, Inc. Apparatus and method for an ultrasonic medical device operating in torsional and transverse modes
US20050187514A1 (en) * 2004-02-09 2005-08-25 Omnisonics Medical Technologies, Inc. Apparatus and method for an ultrasonic medical device operating in a torsional mode
US7794414B2 (en) * 2004-02-09 2010-09-14 Emigrant Bank, N.A. Apparatus and method for an ultrasonic medical device operating in torsional and transverse modes
JP2005227215A (en) * 2004-02-16 2005-08-25 Matsushita Electric Ind Co Ltd Angular velocity sensor and its design method
US20050267488A1 (en) * 2004-05-13 2005-12-01 Omnisonics Medical Technologies, Inc. Apparatus and method for using an ultrasonic medical device to treat urolithiasis
US20050256410A1 (en) * 2004-05-14 2005-11-17 Omnisonics Medical Technologies, Inc. Apparatus and method for an ultrasonic probe capable of bending with aid of a balloon
US20060116610A1 (en) * 2004-11-30 2006-06-01 Omnisonics Medical Technologies, Inc. Apparatus and method for an ultrasonic medical device with variable frequency drive
JP2011155629A (en) * 2009-12-29 2011-08-11 Seiko Epson Corp Vibrating reed, vibrator, oscillator, electronic device, and frequency adjustment method
JP5581887B2 (en) * 2009-12-29 2014-09-03 セイコーエプソン株式会社 Vibrating piece, vibrator, oscillator, electronic device, and frequency adjustment method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2009379C3 (en) * 1970-02-27 1975-01-30 Gebrueder Junghans Gmbh, 7230 Schramberg Piezoelectric oscillator in the form of a tuning fork as a time standard for time-keeping devices
JPS5232695A (en) * 1975-09-09 1977-03-12 Seiko Instr & Electronics Ltd Piezo-oscillator
US4076987A (en) * 1976-12-10 1978-02-28 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Multiple resonator or filter vibrating in a coupled mode
GB2006520B (en) * 1977-09-07 1982-06-30 Suwa Seikosha Kk Piezoelectric resonator
US4320320A (en) * 1978-12-01 1982-03-16 Kabushiki Kaisha Suwa Seikosha Coupled mode tuning fork type quartz crystal vibrator
FR2477803A1 (en) * 1980-03-04 1981-09-11 Suwa Seikosha Kk QUARTZ RESONATOR TYPE DIAPASON TYPE COUPLING

Also Published As

Publication number Publication date
DE3149171A1 (en) 1982-07-29
GB2091486B (en) 1984-10-03
GB2091486A (en) 1982-07-28
US4498025A (en) 1985-02-05

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