FR2273334B2 - - Google Patents
Info
- Publication number
- FR2273334B2 FR2273334B2 FR7506761A FR7506761A FR2273334B2 FR 2273334 B2 FR2273334 B2 FR 2273334B2 FR 7506761 A FR7506761 A FR 7506761A FR 7506761 A FR7506761 A FR 7506761A FR 2273334 B2 FR2273334 B2 FR 2273334B2
- Authority
- FR
- France
- 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
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
-
- 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
- G10K9/02—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated
- G10K9/04—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated by compressed gases, e.g. compressed air
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT4958974A IT1047018B (en) | 1974-03-25 | 1974-03-25 | PNEUMATIC ACOUSTIC WARNING DEVICE WITH COUPLED SPIRALS AND SPIRAL COILS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2273334A2 FR2273334A2 (en) | 1975-12-26 |
| FR2273334B2 true FR2273334B2 (en) | 1977-12-09 |
Family
ID=11271103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7506761A Granted FR2273334A2 (en) | 1974-03-25 | 1975-03-04 | Pneumatic double horn for vehicles - has air admitted through valve and collected water expelled through duct |
Country Status (4)
| Country | Link |
|---|---|
| BR (1) | BR7408101A (en) |
| DE (1) | DE2501584C3 (en) |
| FR (1) | FR2273334A2 (en) |
| IT (1) | IT1047018B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3812096A1 (en) * | 1988-04-12 | 1989-10-26 | Hella Kg Hueck & Co | SIGNALHORN, ESPECIALLY FOR MOTOR VEHICLES |
-
1974
- 1974-03-25 IT IT4958974A patent/IT1047018B/en active
- 1974-09-30 BR BR810174A patent/BR7408101A/en unknown
-
1975
- 1975-01-16 DE DE19752501584 patent/DE2501584C3/en not_active Expired
- 1975-03-04 FR FR7506761A patent/FR2273334A2/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2501584C3 (en) | 1979-02-01 |
| FR2273334A2 (en) | 1975-12-26 |
| DE2501584B2 (en) | 1978-06-01 |
| DE2501584A1 (en) | 1975-10-02 |
| BR7408101A (en) | 1976-04-27 |
| IT1047018B (en) | 1980-09-10 |