FR678380A - Device for generating and receiving mechanical vibrations - Google Patents

Device for generating and receiving mechanical vibrations

Info

Publication number
FR678380A
FR678380A FR678380DA FR678380A FR 678380 A FR678380 A FR 678380A FR 678380D A FR678380D A FR 678380DA FR 678380 A FR678380 A FR 678380A
Authority
FR
France
Prior art keywords
generating
mechanical vibrations
receiving mechanical
receiving
vibrations
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
French (fr)
Inventor
Walter Hahnemann
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 filed Critical
Application granted granted Critical
Publication of FR678380A publication Critical patent/FR678380A/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)
  • Transducers For Ultrasonic Waves (AREA)
FR678380D 1928-05-26 1929-07-12 Device for generating and receiving mechanical vibrations Expired FR678380A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH116701D DE668566C (en) 1928-05-26 1928-05-26 Device for generating or absorbing mechanical vibrations

Publications (1)

Publication Number Publication Date
FR678380A true FR678380A (en) 1930-03-21

Family

ID=7172633

Family Applications (1)

Application Number Title Priority Date Filing Date
FR678380D Expired FR678380A (en) 1928-05-26 1929-07-12 Device for generating and receiving mechanical vibrations

Country Status (2)

Country Link
DE (1) DE668566C (en)
FR (1) FR678380A (en)

Also Published As

Publication number Publication date
DE668566C (en) 1938-12-06

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