IT1169495B - Sirena elettronica - Google Patents
Sirena elettronicaInfo
- Publication number
- IT1169495B IT1169495B IT24274/83A IT2427483A IT1169495B IT 1169495 B IT1169495 B IT 1169495B IT 24274/83 A IT24274/83 A IT 24274/83A IT 2427483 A IT2427483 A IT 2427483A IT 1169495 B IT1169495 B IT 1169495B
- Authority
- IT
- Italy
- Prior art keywords
- electronic siren
- siren
- electronic
- 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
- 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
- G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means
-
- 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
- G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
- G10K11/025—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators horns for impedance matching
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US52810183A | 1983-08-31 | 1983-08-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8324274A0 IT8324274A0 (it) | 1983-12-20 |
IT1169495B true IT1169495B (it) | 1987-05-27 |
Family
ID=24104269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT24274/83A IT1169495B (it) | 1983-08-31 | 1983-12-20 | Sirena elettronica |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS6052200A (it) |
FR (1) | FR2551573B1 (it) |
GB (1) | GB2145905B (it) |
IT (1) | IT1169495B (it) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH672386A5 (it) * | 1986-11-03 | 1989-11-15 | Olten Ag Elektro Apparatebau | |
US4982436A (en) * | 1988-12-05 | 1991-01-01 | Gai-Tronics | Dual horn folded soundpath loudspeaker |
US4963855A (en) * | 1990-02-21 | 1990-10-16 | Kobishi Electric Co., Inc. Ltd. | Warning sound generating device |
GB2354903B (en) * | 1997-02-22 | 2001-05-16 | Fulleon Ltd | Piezoelectric sounder |
WO2019092828A1 (ja) * | 2017-11-09 | 2019-05-16 | 株式会社今仙電機製作所 | 電子式警音器 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2102668A (en) * | 1933-06-14 | 1937-12-21 | Rca Corp | Piezoelectric loudspeaker |
GB566398A (en) * | 1943-06-21 | 1944-12-28 | Guy R Fountain Ltd | Improvements in or relating to loud speakers and loud speaker horns |
US3721840A (en) * | 1971-09-14 | 1973-03-20 | Nittan Co Ltd | Sound generator |
US3890612A (en) * | 1973-09-28 | 1975-06-17 | Mallory & Co Inc P R | High output audible alarm device utilizing a piezoelectric transducer |
JPS5118193A (ja) * | 1974-04-17 | 1976-02-13 | Tetsuya Sato | Koshodatsushutsuyohinangu |
JPS5123439A (en) * | 1974-08-22 | 1976-02-25 | Nippon Steel Corp | Kotakumetsukiitano seizohoho |
US4260928A (en) * | 1978-11-09 | 1981-04-07 | General Electric Company | Electro-acoustic transducer with horn and reflector |
US4310833A (en) * | 1980-01-15 | 1982-01-12 | Kobishi America, Inc. | Electrically-energized horn |
JPS5910868Y2 (ja) * | 1980-04-08 | 1984-04-04 | 伊吹工業株式会社 | 耐寒レフレツクスホ−ンスピ−カ− |
JPS57136897A (en) * | 1981-02-18 | 1982-08-24 | Ibuki Kogyo Kk | Horn speaker |
-
1983
- 1983-12-06 GB GB08332470A patent/GB2145905B/en not_active Expired
- 1983-12-15 JP JP58237162A patent/JPS6052200A/ja active Pending
- 1983-12-20 IT IT24274/83A patent/IT1169495B/it active
-
1984
- 1984-02-24 FR FR848403087A patent/FR2551573B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
IT8324274A0 (it) | 1983-12-20 |
GB2145905A (en) | 1985-04-03 |
GB2145905B (en) | 1987-05-07 |
FR2551573B1 (fr) | 1990-08-31 |
GB8332470D0 (en) | 1984-01-11 |
JPS6052200A (ja) | 1985-03-25 |
FR2551573A1 (fr) | 1985-03-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19961230 |