EP0582557A3 - Piezomembrane constrained in the center and its employment to provide an acoustic howler. - Google Patents
Piezomembrane constrained in the center and its employment to provide an acoustic howler. Download PDFInfo
- Publication number
- EP0582557A3 EP0582557A3 EP93830348A EP93830348A EP0582557A3 EP 0582557 A3 EP0582557 A3 EP 0582557A3 EP 93830348 A EP93830348 A EP 93830348A EP 93830348 A EP93830348 A EP 93830348A EP 0582557 A3 EP0582557 A3 EP 0582557A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- piezomembrane
- howler
- employment
- constrained
- acoustic
- 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.)
- Withdrawn
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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Transducers For Ultrasonic Waves (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITRM920591 | 1992-08-05 | ||
ITRM920591A IT1262971B (en) | 1992-08-05 | 1992-08-05 | PIEZOMEMBRANA BOUND AT THE CENTER AND ITS USE FOR THE REALIZATION OF Acoustic Horn. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0582557A2 EP0582557A2 (en) | 1994-02-09 |
EP0582557A3 true EP0582557A3 (en) | 1995-01-18 |
Family
ID=11401146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93830348A Withdrawn EP0582557A3 (en) | 1992-08-05 | 1993-08-03 | Piezomembrane constrained in the center and its employment to provide an acoustic howler. |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0582557A3 (en) |
IT (1) | IT1262971B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3721798B2 (en) * | 1998-01-13 | 2005-11-30 | 株式会社村田製作所 | Ultrasonic sensor |
ITRM20060238A1 (en) * | 2006-05-03 | 2007-11-04 | Esaote Spa | ULTRACUSTIC MULTIPLE CAPACITOR TRANSDUCER |
EP4091725A1 (en) | 2014-07-11 | 2022-11-23 | Microtech Medical Technologies Ltd. | Multi-cell transducer |
JP7105116B2 (en) * | 2018-06-22 | 2022-07-22 | 株式会社トーキン | ultrasonic sensor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3029067A1 (en) * | 1980-07-31 | 1982-02-11 | Bolta-Werke Gmbh, 8561 Diepersdorf | Sound generator with piezo-element for alarm unit - has central pin suspension of plate with piezo crystal and edge vibrating at different frequency |
EP0053947A1 (en) * | 1980-12-10 | 1982-06-16 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic transducer |
-
1992
- 1992-08-05 IT ITRM920591A patent/IT1262971B/en active IP Right Grant
-
1993
- 1993-08-03 EP EP93830348A patent/EP0582557A3/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3029067A1 (en) * | 1980-07-31 | 1982-02-11 | Bolta-Werke Gmbh, 8561 Diepersdorf | Sound generator with piezo-element for alarm unit - has central pin suspension of plate with piezo crystal and edge vibrating at different frequency |
EP0053947A1 (en) * | 1980-12-10 | 1982-06-16 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic transducer |
Non-Patent Citations (1)
Title |
---|
H.NISHIYAMA & K.KAGA: "Piezoelectric sound components used in a broad range of applications", JEE JOURNAL OF ELECTRONIC ENGINEERING, vol. 25, no. 260, August 1988 (1988-08-01), TOKYO JP, pages 62 - 66 * |
Also Published As
Publication number | Publication date |
---|---|
IT1262971B (en) | 1996-07-23 |
EP0582557A2 (en) | 1994-02-09 |
ITRM920591A0 (en) | 1992-08-05 |
ITRM920591A1 (en) | 1994-02-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE DK ES FR GB GR IE LI LU MC NL PT SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE DK ES FR GB GR IE LI LU MC NL PT SE |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19950719 |