GB191312266A - Improvements in Subaqueous Audible Signalling Apparatus. - Google Patents

Improvements in Subaqueous Audible Signalling Apparatus.

Info

Publication number
GB191312266A
GB191312266A GB191312266DA GB191312266A GB 191312266 A GB191312266 A GB 191312266A GB 191312266D A GB191312266D A GB 191312266DA GB 191312266 A GB191312266 A GB 191312266A
Authority
GB
United Kingdom
Prior art keywords
hull
sound
microphone
block
water
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)
Inventor
Sidney Mitchell Davison
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191312266A publication Critical patent/GB191312266A/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)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
GB191312266D 1913-05-26 1913-05-26 Improvements in Subaqueous Audible Signalling Apparatus. Expired GB191312266A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191312266T 1913-05-26

Publications (1)

Publication Number Publication Date
GB191312266A true GB191312266A (en) 1914-05-26

Family

ID=32371160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191312266D Expired GB191312266A (en) 1913-05-26 1913-05-26 Improvements in Subaqueous Audible Signalling Apparatus.

Country Status (3)

Country Link
FR (1) FR471373A (fr)
GB (1) GB191312266A (fr)
NL (1) NL1745C (fr)

Also Published As

Publication number Publication date
FR471373A (fr) 1914-10-24
NL1745C (fr)

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