FR950240A - Montage de cristaux piézoélectriques - Google Patents

Montage de cristaux piézoélectriques

Info

Publication number
FR950240A
FR950240A FR950240DA FR950240A FR 950240 A FR950240 A FR 950240A FR 950240D A FR950240D A FR 950240DA FR 950240 A FR950240 A FR 950240A
Authority
FR
France
Prior art keywords
mounting
piezoelectric crystals
piezoelectric
crystals
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
Other languages
English (en)
French (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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR950240A publication Critical patent/FR950240A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
FR950240D 1941-01-31 1947-07-28 Montage de cristaux piézoélectriques Expired FR950240A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US376874A US2313129A (en) 1941-01-31 1941-01-31 Art of mounting piezoelectric crystals

Publications (1)

Publication Number Publication Date
FR950240A true FR950240A (fr) 1949-09-21

Family

ID=23486852

Family Applications (1)

Application Number Title Priority Date Filing Date
FR950240D Expired FR950240A (fr) 1941-01-31 1947-07-28 Montage de cristaux piézoélectriques

Country Status (4)

Country Link
US (1) US2313129A (xx)
BE (1) BE474895A (xx)
FR (1) FR950240A (xx)
GB (1) GB551954A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029173B (de) * 1952-09-15 1958-04-30 Daniel Tefi Apparatebau Piezoelektrischer Tonabnehmer

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE483732A (xx) * 1944-05-03
US2476414A (en) * 1945-05-24 1949-07-19 William H Hutter Phonograph pickup having plastic torsion arm
US2510585A (en) * 1945-08-21 1950-06-06 Rca Corp Dynamic galvanometer
US2510342A (en) * 1946-04-03 1950-06-06 Avco Mfg Corp Pickup mounting
US2562741A (en) * 1947-02-13 1951-07-31 Dictaphone Corp Method of making sealed electromechanical translating devices
US2539297A (en) * 1947-02-27 1951-01-23 Lazaro Luis Nicolas Gomez De Electric musical instrument
US2519185A (en) * 1947-03-21 1950-08-15 Brush Dev Co Phonograph pickup
US2518861A (en) * 1947-03-21 1950-08-15 Brush Dev Co Phonograph pickup
US2564054A (en) * 1947-10-10 1951-08-14 Magnavox Co Phonograph pickup and mechanical motion converting system therefor
US2594948A (en) * 1947-10-30 1952-04-29 Brush Dev Co Electromechanical transducer unit
US2498210A (en) * 1948-11-02 1950-02-21 Avco Mfg Corp Piezoelectric phonograph pickup device
NL77992C (xx) * 1950-03-02
DE1026979B (de) * 1952-03-13 1958-03-27 Electroacustik Ges M B H Vorrichtung zur Herstellung einer loesbaren Verbindung zwischen einem Tonabnehmer und einem Abtastorgan
DE1026980B (de) * 1952-03-27 1958-03-27 Electroacustik Ges M B H Piezoelektrischer Tonabnehmer
DE1053802B (de) * 1953-05-28 1959-03-26 Tefi Appbau Dr Daniel K G Verfahren zur Herstellung eines piezoelektrischen Tonabnehmers
US2879413A (en) * 1956-08-21 1959-03-24 Sonotone Corp Phonograph pickups
US2839695A (en) * 1957-01-31 1958-06-17 Donald H Robey Frequency controllable piezo-electric resonator
US3377439A (en) * 1958-04-03 1968-04-09 Erie Technological Prod Inc Binaural piezoelectric pickup
GB1052623A (xx) * 1962-06-20
US3465747A (en) * 1964-11-17 1969-09-09 Vernon L Rogallo Ballistocardiograph
US3374663A (en) * 1965-04-16 1968-03-26 Electronic Systems Inc Vibration detector
US3582692A (en) * 1968-05-01 1971-06-01 U S Research Corp Resiliently supported sensing transducer
US4051396A (en) * 1974-02-28 1977-09-27 Channel Products, Inc. Encapsulation to prevent fracture of piezoelectric high voltage mechanism
JPS59501895A (ja) * 1982-10-19 1984-11-15 アイバツク　コ−ポレイシヨン 電子式血圧計
US7622844B1 (en) * 2003-12-30 2009-11-24 Hipercon, Llc Metal fiber brush interface conditioning

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029173B (de) * 1952-09-15 1958-04-30 Daniel Tefi Apparatebau Piezoelektrischer Tonabnehmer

Also Published As

Publication number Publication date
GB551954A (en) 1943-03-17
US2313129A (en) 1943-03-09
BE474895A (xx)

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