GB147937A - Improvements in sound-producing or receiving devices containing two or more vibratory structures - Google Patents

Improvements in sound-producing or receiving devices containing two or more vibratory structures

Info

Publication number
GB147937A
GB147937A GB19992/20A GB1999220A GB147937A GB 147937 A GB147937 A GB 147937A GB 19992/20 A GB19992/20 A GB 19992/20A GB 1999220 A GB1999220 A GB 1999220A GB 147937 A GB147937 A GB 147937A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
frequencies
sound
producing
dampings
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
GB19992/20A
Other languages
English (en)
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.)
Signal GmbH
Original Assignee
Signal GmbH
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 Signal GmbH filed Critical Signal GmbH
Publication of GB147937A publication Critical patent/GB147937A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Transducers For Ultrasonic Waves (AREA)
GB19992/20A 1916-02-29 1920-07-09 Improvements in sound-producing or receiving devices containing two or more vibratory structures Expired GB147937A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1610674X 1916-02-29

Publications (1)

Publication Number Publication Date
GB147937A true GB147937A (en) 1921-10-10

Family

ID=7737107

Family Applications (3)

Application Number Title Priority Date Filing Date
GB19992/20A Expired GB147937A (en) 1916-02-29 1920-07-09 Improvements in sound-producing or receiving devices containing two or more vibratory structures
GB20357/20A Expired GB148412A (en) 1916-02-29 1920-07-10 Improvements in sound-producing or receiving devices containing two or more vibratory structures
GB20359/20A Expired GB148414A (en) 1916-02-29 1920-07-10 Improvements in sound producing or receiving devices containing two or more vibratory structures

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB20357/20A Expired GB148412A (en) 1916-02-29 1920-07-10 Improvements in sound-producing or receiving devices containing two or more vibratory structures
GB20359/20A Expired GB148414A (en) 1916-02-29 1920-07-10 Improvements in sound producing or receiving devices containing two or more vibratory structures

Country Status (5)

Country Link
US (1) US1610674A (enExample)
DE (1) DE310769C (enExample)
FR (1) FR532113A (enExample)
GB (3) GB147937A (enExample)
NL (1) NL10361C (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903673A (en) * 1954-01-06 1959-09-08 Harris Transducer Corp Acoustical impedance-matching transducer
US3121212A (en) * 1960-03-17 1964-02-11 Peter E Weber Electrodynamic underwater sound source
CN102733649B (zh) 2011-04-05 2016-03-09 道尔青少年集团公司 安全围栏
US9775336B2 (en) 2013-12-06 2017-10-03 Airmar Technology Corporation Acoustic projector with source level monitoring and control
US10030961B2 (en) 2015-11-27 2018-07-24 General Electric Company Gap measuring device

Also Published As

Publication number Publication date
FR532113A (fr) 1922-01-28
NL10361C (enExample)
US1610674A (en) 1926-12-14
GB148412A (en) 1921-10-10
GB148414A (en) 1921-10-10
DE310769C (enExample)

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