GB148976A - Improvements in electromagnetic sound producers and receivers - Google Patents

Improvements in electromagnetic sound producers and receivers

Info

Publication number
GB148976A
GB148976A GB2083620A GB2083620A GB148976A GB 148976 A GB148976 A GB 148976A GB 2083620 A GB2083620 A GB 2083620A GB 2083620 A GB2083620 A GB 2083620A GB 148976 A GB148976 A GB 148976A
Authority
GB
United Kingdom
Prior art keywords
coils
diaphragm
armature
field
hood
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
GB2083620A
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 GB148976A publication Critical patent/GB148976A/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)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Vibration Prevention Devices (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
GB2083620A 1920-10-17 1920-07-10 Improvements in electromagnetic sound producers and receivers Expired GB148976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES54481D DE410318C (de) 1920-10-17 1920-10-17 Schallapparat fuer Unterwasserschallwellen

Publications (1)

Publication Number Publication Date
GB148976A true GB148976A (en) 1921-11-10

Family

ID=7489830

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2083620A Expired GB148976A (en) 1920-10-17 1920-07-10 Improvements in electromagnetic sound producers and receivers

Country Status (2)

Country Link
DE (2) DE339085C (de)
GB (1) GB148976A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108927538A (zh) * 2018-08-02 2018-12-04 哈尔滨理工大学 一种可调式电磁阻尼减振镗杆

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108927538A (zh) * 2018-08-02 2018-12-04 哈尔滨理工大学 一种可调式电磁阻尼减振镗杆

Also Published As

Publication number Publication date
DE339085C (de) 1921-07-15
DE410318C (de) 1925-02-24

Similar Documents

Publication Publication Date Title
GB1013182A (en) Improvements in ice detector
GB746773A (en) Improvements in electroacoustic devices
GB148976A (en) Improvements in electromagnetic sound producers and receivers
GB604159A (en) Improvements in or relating to acoustic transducers
GB653923A (en) Improvements in or relating to electro-acoustic transducers
GB602114A (en) Improvements in or relating to electrodynamic pickups
GB148413A (en) Sending or receiving device for subaqueous sound waves
GB724113A (en) Electrodynamic sound transmitting and receiving units
GB150322A (en) Improvements in and relating to vibration apparatus, particularly for the reception and production of sound waves
GB126970A (en) Improvements in or relating to Reproducing Apparatus for use with Phonographs and other Talking Machines.
GB441747A (en) Improvements in or relating to devices comprising an armature arranged between pole-pieces
GB221586A (en) Improvements in sound receiving devices
GB192696A (de)
GB191514474A (en) Improvements in Submarine Signal Sound Receiving Apparatus.
US1562193A (en) Submarine sound signaling or indicating apparatus
GB469736A (en) Improvements relating to electromagnetic sound producing apparatus
GB946974A (en) Improvements in or relating to electromechanical transducers
GB291116A (en) Improvements in electromechanical vibrators
GB276652A (en) Improvements in or relating to instruments for measuring the field strength of permanent magnets
GB148985A (de)
GB603649A (en) Improvements in sound-reproducing devices
GB275140A (en) Device for the conversion of electrical into acoustic oscillations
GB602661A (en) Improvements in or relating to gramophone pick-ups
GB581739A (en) Improvements in or relating to subaqueous sound receivers
GB144664A (en) Improvements in vibrating apparatus for sound signalling