FR581099A - Avertisseur acoustique - Google Patents
Avertisseur acoustiqueInfo
- Publication number
- FR581099A FR581099A FR581099DA FR581099A FR 581099 A FR581099 A FR 581099A FR 581099D A FR581099D A FR 581099DA FR 581099 A FR581099 A FR 581099A
- Authority
- FR
- France
- Prior art keywords
- warning device
- acoustic warning
- acoustic
- warning
- 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
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/10—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by mechanical means only
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE581099X | 1923-07-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR581099A true FR581099A (fr) | 1924-11-21 |
Family
ID=6570981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR581099D Expired FR581099A (fr) | 1923-07-04 | 1924-02-28 | Avertisseur acoustique |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR581099A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0073878A1 (fr) * | 1981-09-04 | 1983-03-16 | Hörmann GmbH | Sirène électronique |
-
1924
- 1924-02-28 FR FR581099D patent/FR581099A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0073878A1 (fr) * | 1981-09-04 | 1983-03-16 | Hörmann GmbH | Sirène électronique |
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