GB1513200A - Apparatus for generating frequency modulated acoustic vibrations under water - Google Patents

Apparatus for generating frequency modulated acoustic vibrations under water

Info

Publication number
GB1513200A
GB1513200A GB52327/76A GB5232776A GB1513200A GB 1513200 A GB1513200 A GB 1513200A GB 52327/76 A GB52327/76 A GB 52327/76A GB 5232776 A GB5232776 A GB 5232776A GB 1513200 A GB1513200 A GB 1513200A
Authority
GB
United Kingdom
Prior art keywords
transducer
under water
frequency modulated
acoustic vibrations
generating frequency
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
GB52327/76A
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.)
Efa Elektrofunkgeraete
Original Assignee
Efa Elektrofunkgeraete
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 Efa Elektrofunkgeraete filed Critical Efa Elektrofunkgeraete
Publication of GB1513200A publication Critical patent/GB1513200A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Physical Water Treatments (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
GB52327/76A 1975-12-17 1976-12-15 Apparatus for generating frequency modulated acoustic vibrations under water Expired GB1513200A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1634875A CH588789A5 (enrdf_load_stackoverflow) 1975-12-17 1975-12-17

Publications (1)

Publication Number Publication Date
GB1513200A true GB1513200A (en) 1978-06-07

Family

ID=4416556

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52327/76A Expired GB1513200A (en) 1975-12-17 1976-12-15 Apparatus for generating frequency modulated acoustic vibrations under water

Country Status (13)

Country Link
JP (1) JPS5286761A (enrdf_load_stackoverflow)
AU (1) AU504754B2 (enrdf_load_stackoverflow)
BR (1) BR7608462A (enrdf_load_stackoverflow)
CH (1) CH588789A5 (enrdf_load_stackoverflow)
DE (1) DE2656969A1 (enrdf_load_stackoverflow)
DK (1) DK565876A (enrdf_load_stackoverflow)
ES (1) ES454180A1 (enrdf_load_stackoverflow)
FI (1) FI763585A7 (enrdf_load_stackoverflow)
FR (1) FR2336006A1 (enrdf_load_stackoverflow)
GB (1) GB1513200A (enrdf_load_stackoverflow)
NL (1) NL7613846A (enrdf_load_stackoverflow)
NO (1) NO764241L (enrdf_load_stackoverflow)
ZA (1) ZA767342B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119980A (en) * 1982-05-11 1983-11-23 Madelyn Carrol Freeman A device for use by a diver to give a signal
AU656756B2 (en) * 1991-01-04 1995-02-16 Jorgen Brosow Signal-transmission method and device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413748U (enrdf_load_stackoverflow) * 1977-06-30 1979-01-29

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119980A (en) * 1982-05-11 1983-11-23 Madelyn Carrol Freeman A device for use by a diver to give a signal
AU656756B2 (en) * 1991-01-04 1995-02-16 Jorgen Brosow Signal-transmission method and device

Also Published As

Publication number Publication date
CH588789A5 (enrdf_load_stackoverflow) 1977-06-15
NO764241L (enrdf_load_stackoverflow) 1977-06-20
FI763585A7 (enrdf_load_stackoverflow) 1977-06-18
AU504754B2 (en) 1979-10-25
ES454180A1 (es) 1977-12-01
DK565876A (da) 1977-06-18
DE2656969A1 (de) 1977-07-07
NL7613846A (nl) 1977-06-21
AU2046476A (en) 1978-06-15
FR2336006A1 (fr) 1977-07-15
JPS5286761A (en) 1977-07-19
FR2336006B3 (enrdf_load_stackoverflow) 1979-01-19
BR7608462A (pt) 1977-11-29
ZA767342B (en) 1977-11-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee