FR2240489A1 - - Google Patents
Info
- Publication number
- FR2240489A1 FR2240489A1 FR7427277A FR7427277A FR2240489A1 FR 2240489 A1 FR2240489 A1 FR 2240489A1 FR 7427277 A FR7427277 A FR 7427277A FR 7427277 A FR7427277 A FR 7427277A FR 2240489 A1 FR2240489 A1 FR 2240489A1
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
-
- 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
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
- G10K9/22—Mountings; Casings
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Electromechanical Clocks (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US38694073A | 1973-08-09 | 1973-08-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2240489A1 true FR2240489A1 (en) | 1975-03-07 |
| FR2240489B3 FR2240489B3 (en) | 1977-06-03 |
Family
ID=23527734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7427277A Expired FR2240489B3 (en) | 1973-08-09 | 1974-08-06 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5046295A (en) |
| BR (1) | BR7405910D0 (en) |
| DE (2) | DE2438057A1 (en) |
| FR (1) | FR2240489B3 (en) |
| GB (1) | GB1435668A (en) |
| IT (1) | IT1016769B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0271267A2 (en) * | 1986-12-10 | 1988-06-15 | U.S. Capacitors Inc. | Piezo-electric signalling device |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50133075U (en) * | 1974-04-16 | 1975-11-01 | ||
| JPS50133076U (en) * | 1974-04-16 | 1975-11-01 | ||
| JPS50133074U (en) * | 1974-04-16 | 1975-11-01 | ||
| JPS5526955Y2 (en) * | 1976-06-09 | 1980-06-27 | ||
| CA1087004A (en) * | 1976-08-11 | 1980-10-07 | Michael J. Hampshire | Sound generator |
| DE3230060C2 (en) * | 1981-07-31 | 1986-07-31 | Sumitomo Electric Industries, Ltd., Osaka | Piezoelectric buzzer |
| DE19626293A1 (en) * | 1996-07-01 | 1998-01-08 | Teves Gmbh Alfred | Ultrasonic transducer with contact element |
| DE102008023982A1 (en) * | 2008-05-16 | 2009-12-03 | Vemac Gmbh & Co. Kg | Circuit for controlling capacitively influenced loads |
| CN118137177B (en) * | 2024-05-10 | 2024-06-28 | 国网山东省电力公司德州市陵城区供电公司 | Electric power grounding post with loosening prompt effect |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6508091A (en) * | 1965-06-24 | 1966-12-27 | ||
| GB1219805A (en) * | 1967-06-21 | 1971-01-20 | Gen Electric | Improvements in vacuum type circuit interrupter |
-
1974
- 1974-07-17 BR BR5910/74A patent/BR7405910D0/en unknown
- 1974-08-02 IT IT69462/74A patent/IT1016769B/en active
- 1974-08-06 FR FR7427277A patent/FR2240489B3/fr not_active Expired
- 1974-08-07 DE DE2438057A patent/DE2438057A1/en active Pending
- 1974-08-07 DE DE7426907U patent/DE7426907U/en not_active Expired
- 1974-08-09 JP JP49091412A patent/JPS5046295A/ja active Pending
- 1974-08-09 GB GB3525774A patent/GB1435668A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0271267A2 (en) * | 1986-12-10 | 1988-06-15 | U.S. Capacitors Inc. | Piezo-electric signalling device |
| EP0271267A3 (en) * | 1986-12-10 | 1990-03-07 | U.S. Capacitors Inc. | Piezo-electric signalling device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1435668A (en) | 1976-05-12 |
| JPS5046295A (en) | 1975-04-24 |
| FR2240489B3 (en) | 1977-06-03 |
| DE2438057A1 (en) | 1975-03-06 |
| IT1016769B (en) | 1977-06-20 |
| DE7426907U (en) | 1977-11-03 |
| BR7405910D0 (en) | 1975-05-27 |