FR2481492A3 - Appareil radio emetteur-recepteur pour la recherche des personnes ensevelies sous des masses de neige ou de terre - Google Patents

Appareil radio emetteur-recepteur pour la recherche des personnes ensevelies sous des masses de neige ou de terre Download PDF

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Publication number
FR2481492A3
FR2481492A3 FR8108498A FR8108498A FR2481492A3 FR 2481492 A3 FR2481492 A3 FR 2481492A3 FR 8108498 A FR8108498 A FR 8108498A FR 8108498 A FR8108498 A FR 8108498A FR 2481492 A3 FR2481492 A3 FR 2481492A3
Authority
FR
France
Prior art keywords
housing
valve
loudspeaker
interior
wall
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.)
Granted
Application number
FR8108498A
Other languages
English (en)
French (fr)
Other versions
FR2481492B3 (enrdf_load_stackoverflow
Inventor
Enrico Borroni
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.)
FITRE SpA
Original Assignee
FITRE SpA
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 FITRE SpA filed Critical FITRE SpA
Publication of FR2481492A3 publication Critical patent/FR2481492A3/fr
Application granted granted Critical
Publication of FR2481492B3 publication Critical patent/FR2481492B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B29/00—Apparatus for mountaineering
    • A63B29/02—Mountain guy-ropes or accessories, e.g. avalanche ropes; Means for indicating the location of accidentally buried, e.g. snow-buried, persons
    • A63B29/021—Means for indicating the location of accidentally buried, e.g. snow-buried, persons
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B2001/3894—Waterproofing of transmission device

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
FR8108498A 1980-04-29 1981-04-28 Appareil radio emetteur-recepteur pour la recherche des personnes ensevelies sous des masses de neige ou de terre Granted FR2481492A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2167380U IT8021673V0 (it) 1980-04-29 1980-04-29 Apparecchio ricerca-persone,a tenuta stagna,con dispositivo di compensazione della pressione interna

Publications (2)

Publication Number Publication Date
FR2481492A3 true FR2481492A3 (fr) 1981-10-30
FR2481492B3 FR2481492B3 (enrdf_load_stackoverflow) 1982-01-29

Family

ID=11185179

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8108498A Granted FR2481492A3 (fr) 1980-04-29 1981-04-28 Appareil radio emetteur-recepteur pour la recherche des personnes ensevelies sous des masses de neige ou de terre

Country Status (2)

Country Link
FR (1) FR2481492A3 (enrdf_load_stackoverflow)
IT (1) IT8021673V0 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491970A (en) * 1982-12-30 1985-01-01 Lifeline Systems, Inc. Portable transmitter for emergency alarm system having watertight enclosure
DE19502627A1 (de) * 1995-01-19 1996-08-08 Peter Wolschke Verfahren und Vorrichtung zur Kontaktaufnahme zwischen Personen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491970A (en) * 1982-12-30 1985-01-01 Lifeline Systems, Inc. Portable transmitter for emergency alarm system having watertight enclosure
DE19502627A1 (de) * 1995-01-19 1996-08-08 Peter Wolschke Verfahren und Vorrichtung zur Kontaktaufnahme zwischen Personen

Also Published As

Publication number Publication date
IT8021673V0 (it) 1980-04-29
FR2481492B3 (enrdf_load_stackoverflow) 1982-01-29

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