GB551954A - Improvements in or relating to the mounting of piezoelectric crystals - Google Patents

Improvements in or relating to the mounting of piezoelectric crystals

Info

Publication number
GB551954A
GB551954A GB12165/41A GB1216541A GB551954A GB 551954 A GB551954 A GB 551954A GB 12165/41 A GB12165/41 A GB 12165/41A GB 1216541 A GB1216541 A GB 1216541A GB 551954 A GB551954 A GB 551954A
Authority
GB
United Kingdom
Prior art keywords
casing
filled
relating
mounting
moisture
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
GB12165/41A
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
Publication of GB551954A publication Critical patent/GB551954A/en
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)

Abstract

551,954. Gramophone pick-ups. RADIO CORPORATION OF AMERICA. Sept. 19, 1941, No. 12165. Convention date, Jan. 31. [Class 40 (iv)] [Also in Group XL] A Rochelle salt crystal is mounted in a casing which is filled with a semisolid moisture proofing insulating materials such as lanolin, petroleum jelly, calcium stearate or aluminium stearate. Fig. 1 shows the invention applied to a conventional pick-up in which a needle 13 is connected by a yoke 9 to a bi-morph crystal 3 having electrode foils 5 and which is clamped at 7 inside a casing 1 filled with the moisture-proofing compound.
GB12165/41A 1941-01-31 1941-09-19 Improvements in or relating to the mounting of piezoelectric crystals Expired GB551954A (en)

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
GB551954A true GB551954A (en) 1943-03-17

Family

ID=23486852

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12165/41A Expired GB551954A (en) 1941-01-31 1941-09-19 Improvements in or relating to the mounting of piezoelectric crystals

Country Status (4)

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

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE483732A (en) * 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
US2518861A (en) * 1947-03-21 1950-08-15 Brush Dev Co Phonograph pickup
US2519185A (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 (en) * 1950-03-02
DE1026979B (en) * 1952-03-13 1958-03-27 Electroacustik Ges M B H Device for establishing a detachable connection between a pickup and a scanning element
DE1026980B (en) * 1952-03-27 1958-03-27 Electroacustik Ges M B H Piezoelectric pickup
DE1029173B (en) * 1952-09-15 1958-04-30 Daniel Tefi Apparatebau Piezoelectric pickup
DE1053802B (en) * 1953-05-28 1959-03-26 Tefi Appbau Dr Daniel K G Method of manufacturing a piezoelectric pickup
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 (en) * 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
WO1984001499A1 (en) * 1982-10-19 1984-04-26 Ivac Corp Electronic sphygmomanometer
US7622844B1 (en) * 2003-12-30 2009-11-24 Hipercon, Llc Metal fiber brush interface conditioning

Also Published As

Publication number Publication date
US2313129A (en) 1943-03-09
BE474895A (en)
FR950240A (en) 1949-09-21

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