FR2293844B1 - - Google Patents

Info

Publication number
FR2293844B1
FR2293844B1 FR7536848A FR7536848A FR2293844B1 FR 2293844 B1 FR2293844 B1 FR 2293844B1 FR 7536848 A FR7536848 A FR 7536848A FR 7536848 A FR7536848 A FR 7536848A FR 2293844 B1 FR2293844 B1 FR 2293844B1
Authority
FR
France
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
FR7536848A
Other versions
FR2293844A1 (fr
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.)
BARCUS LESTER
Original Assignee
BARCUS LESTER
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 to US05/528,671 priority Critical patent/US4048454A/en
Application filed by BARCUS LESTER filed Critical BARCUS LESTER
Publication of FR2293844A1 publication Critical patent/FR2293844A1/fr
Application granted granted Critical
Publication of FR2293844B1 publication Critical patent/FR2293844B1/fr
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K13/00Cones, diaphragms, or the like, for emitting or receiving sound in general
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00Piezo-electric transducers; Electrostrictive transducers
FR7536848A 1974-12-02 1975-12-02 Expired FR2293844B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/528,671 US4048454A (en) 1974-12-02 1974-12-02 Sonic transducer employing rigid radiating member

Publications (2)

Publication Number Publication Date
FR2293844A1 FR2293844A1 (fr) 1976-07-02
FR2293844B1 true FR2293844B1 (fr) 1983-04-15

Family

ID=24106648

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7536848A Expired FR2293844B1 (fr) 1974-12-02 1975-12-02

Country Status (6)

Country Link
US (1) US4048454A (fr)
JP (1) JPS51102626A (fr)
CA (1) CA1060120A (fr)
DE (1) DE2554150A1 (fr)
FR (1) FR2293844B1 (fr)
GB (1) GB1530998A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2434540A1 (fr) * 1978-08-25 1980-03-21 Saint Gobain Membrane acoustique en verre mince
US4352961A (en) * 1979-06-15 1982-10-05 Hitachi, Ltd. Transparent flat panel piezoelectric speaker
US4352039A (en) * 1980-07-25 1982-09-28 The United States Of America As Represented By The Secretary Of The Army Sonic transducer
GB2167557B (en) * 1984-10-11 1988-07-20 Fisco Electronics Distance sensing
DE3732410A1 (de) * 1987-09-25 1989-04-13 Siemens Ag Ultraschallwandler mit astigmatischer sende-/empfangscharakteristik
EP0339142B1 (fr) * 1988-04-26 1992-09-02 Ford New Holland N.V. Détecteurs d'impact
US5115472A (en) * 1988-10-07 1992-05-19 Park Kyung T Electroacoustic novelties
DE9003065U1 (fr) * 1989-04-12 1990-10-25 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
DE59010738D1 (de) * 1990-04-09 1997-08-21 Siemens Ag Frequenzselektiver Ultraschall-Schichtwandler
US5473214A (en) * 1993-05-07 1995-12-05 Noise Cancellation Technologies, Inc. Low voltage bender piezo-actuators
NL1000275C2 (nl) * 1995-05-02 1996-11-05 Hollandse Signaalapparaten Bv Acoustic vibration generator.
AU7717398A (en) * 1997-06-19 1999-01-04 Nct Group, Inc. Loudspeaker assembly
US8340327B2 (en) * 2009-06-11 2012-12-25 Magna International Inc. Home theater
USD797083S1 (en) * 2013-07-10 2017-09-12 Stanley G. Coates Sound deflecting apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR579357A (fr) * 1923-06-14 1924-10-15 Plaque téléphonique
US2341275A (en) * 1940-11-16 1944-02-08 Holland Glen Sound reproducing instrument
US2427062A (en) * 1944-06-02 1947-09-09 Brush Dev Co Vibrational energy transmitter or receiver
US3019660A (en) * 1956-04-26 1962-02-06 Gulton Ind Inc Ultrasonic transducer
USRE25433E (en) * 1956-08-27 1963-08-13 Electromechanical transducer system
US3243768A (en) * 1962-06-01 1966-03-29 Jr Arthur H Roshon Integral directional electroacoustical transducer for simultaneous transmission and reception of sound
US3423543A (en) * 1965-06-24 1969-01-21 Harry W Kompanek Loudspeaker with piezoelectric wafer driving elements
US3439128A (en) * 1966-05-16 1969-04-15 Zenith Radio Corp Miniature ceramic microphone
JPS5123439B2 (fr) * 1971-11-05 1976-07-16
US3846779A (en) * 1972-08-28 1974-11-05 Galloway C Ultrasonic transducer

Also Published As

Publication number Publication date
GB1530998A (en) 1978-11-01
US4048454A (en) 1977-09-13
CA1060120A (fr) 1979-08-07
FR2293844A1 (fr) 1976-07-02
DE2554150A1 (de) 1976-08-12
CA1060120A1 (fr)
JPS51102626A (ja) 1976-09-10

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Legal Events

Date Code Title Description
ST Notification of lapse