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 PDFInfo
- 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
Links
- 239000012528 membrane Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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)
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)
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 |
-
1980
- 1980-04-29 IT IT2167380U patent/IT8021673V0/it unknown
-
1981
- 1981-04-28 FR FR8108498A patent/FR2481492A3/fr active Granted
Cited By (2)
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 |
---|---|
FR2481492B3 (enrdf_load_stackoverflow) | 1982-01-29 |
IT8021673V0 (it) | 1980-04-29 |
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