IL43768A - A sound generator - Google Patents
A sound generatorInfo
- Publication number
- IL43768A IL43768A IL43768A IL4376873A IL43768A IL 43768 A IL43768 A IL 43768A IL 43768 A IL43768 A IL 43768A IL 4376873 A IL4376873 A IL 4376873A IL 43768 A IL43768 A IL 43768A
- Authority
- IL
- Israel
- Prior art keywords
- sound generator
- rotor
- stator
- sealing element
- sound
- Prior art date
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
- G10K7/00—Sirens
- G10K7/02—Sirens in which the sound-producing member is rotated manually or by a motor
- G10K7/04—Sirens in which the sound-producing member is rotated manually or by a motor by an electric motor
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Motor Or Generator Frames (AREA)
- Sealing Devices (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Claims (15)
1. A sound generatorf comprising a substantially hollow cylindrical rotor and a substantially hollow cylindrical stator arranged in the interior space of the rotor co-axially with and at a spacing from thB rotor, the rotor and the stator having at least one pair of communicable passage openings respectively arranged in the rotor and stator for the passage of a gasBous medium therethrough and the stator being provided with sealing means arranged to so slidingly contact the rotor as to substantially . seal the or each passage opening in the atator from the apace between the rotor and stator.
2. A sound generator as claimed in claim 1, wherein the sealing means comprises a respective sealing element associated with the or each passage opening in the stator.
3. A sound generator as claimed in claim 2, wherein the or each sealing element is provided with a passage opening in alignment with and larger in cross-section than the respectively associated passage opening in the stator.
4. A sound generator as claimed in either claim 2 or claim 3, comprising means resiliently urging the or each sealing element into sliding contact with the rotor,
5. A sound generator ae claimed in either claim 2 or claim 3, wherein the atator ie provided with channel means adjacent the or each sealing element to receive a flow of gaseous medium urging the or each sealing element into sliding contact with the rotor.
6. A sound generator as claimed in any one of claims 2 to 5, wherein the stator is provided with a respective recess receiving the or each sealing element.
7. · A sound generator as claimed in any one of claims 2 to 6, wherein the • - . . 43768/2 or each eeallng element comprises carbon.
8. A sound generator as claimed in claim 7, wherein the carbon is of the type conventionally used for electrical brushes. .'
9. A sound generator as claimed in any one of claims 2 to 6, uherein the or each sealing element comprises- a synthetic material.
10. A sound generator as claimed in claim 9, uherein the synthetic · material 1B plastics material.
11. A sound genBretor as claimed in any one of the preceding claims, wherein the rotor at least where it is in eliding contact with the sealing means comprises a material having characteristics adapted to those of the material of the sealing means.
12. A sound generator as claimed in claim 11, uherein said material of the rotor comprises copper.
13. A sound generator substantially as hereinbefore described with reference to Fig. 1 of the accompanying drawings.
14. A sound generator modified substsntially as hereinbefore described with reference to Fig. 2 of the accompanying drawings.
15. A sound generator modified substantially as hereinbefore deecribed with reference to Fig. 3 of the accompanying drewinge. For DR. ARTNERS By:
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2262948A DE2262948C3 (en) | 1972-12-22 | 1972-12-22 | Compressed air siren |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL43768A0 IL43768A0 (en) | 1974-05-16 |
| IL43768A true IL43768A (en) | 1976-05-31 |
Family
ID=5865228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL43768A IL43768A (en) | 1972-12-22 | 1973-12-07 | A sound generator |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH563639A5 (en) |
| DE (1) | DE2262948C3 (en) |
| GB (1) | GB1419667A (en) |
| IL (1) | IL43768A (en) |
| YU (1) | YU34947B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE425597B (en) * | 1980-10-13 | 1982-10-18 | Ekstroms Vermetekniska Ab | FORCED CONTROL SOUND STRUCTORS FOR THE INFRALUE AREA |
| US4558656A (en) * | 1983-03-31 | 1985-12-17 | Southern California Edison Company, Inc. | Siren |
| US4807203A (en) * | 1983-03-31 | 1989-02-21 | Southern California Edison Co. | Siren |
| DE19528570C2 (en) * | 1995-08-03 | 1999-03-11 | Daimler Benz Ag | Directed sound generator |
| CN103761960A (en) * | 2014-01-14 | 2014-04-30 | 台州市莱恩克警报器有限公司 | Alarming apparatus |
| CN110195889B (en) * | 2019-06-27 | 2024-05-03 | 勃格科技有限公司 | Dustproof electric fireplace and using method |
-
1972
- 1972-12-22 DE DE2262948A patent/DE2262948C3/en not_active Expired
-
1973
- 1973-12-07 IL IL43768A patent/IL43768A/en unknown
- 1973-12-07 CH CH1718173A patent/CH563639A5/xx not_active IP Right Cessation
- 1973-12-17 GB GB5828573A patent/GB1419667A/en not_active Expired
- 1973-12-17 YU YU3275/73A patent/YU34947B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| YU34947B (en) | 1980-04-30 |
| GB1419667A (en) | 1975-12-31 |
| DE2262948B2 (en) | 1978-01-26 |
| IL43768A0 (en) | 1974-05-16 |
| DE2262948C3 (en) | 1978-10-12 |
| YU327573A (en) | 1979-10-31 |
| CH563639A5 (en) | 1975-06-30 |
| DE2262948A1 (en) | 1974-06-27 |
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