BE694799A - - Google Patents
Info
- Publication number
- BE694799A BE694799A BE694799DA BE694799A BE 694799 A BE694799 A BE 694799A BE 694799D A BE694799D A BE 694799DA BE 694799 A BE694799 A BE 694799A
- Authority
- BE
- Belgium
- 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
- 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
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Emergency Alarm Devices (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US53100066A | 1966-03-01 | 1966-03-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE694799A true BE694799A (en) | 1967-08-28 |
Family
ID=24115856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE694799D Expired BE694799A (en) | 1966-03-01 | 1967-02-28 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3466649A (en) |
| BE (1) | BE694799A (en) |
| CH (1) | CH457202A (en) |
| DE (1) | DE1566699A1 (en) |
| FR (1) | FR1512885A (en) |
| GB (1) | GB1180444A (en) |
| SE (1) | SE340773B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3623086A (en) * | 1968-11-06 | 1971-11-23 | Schulmerich Mfg Co | Solid state control system for striking bells |
| GB1412457A (en) * | 1971-12-27 | 1975-11-05 | Sumitomo Electric Industries | Sound generator comprising a piezoelectric acoustic device |
| US3872470A (en) * | 1973-04-18 | 1975-03-18 | Airco Inc | Audible signal generating apparatus having selectively controlled audible output |
| US4078209A (en) * | 1977-03-11 | 1978-03-07 | International Telephone And Telegraph Corporation | Sound communication system with speaker protection for frequencies below a predetermined minimum |
| US4151520A (en) * | 1977-07-25 | 1979-04-24 | Full Elliott D | Portable self-contained alarm with remote triggering capability |
| DE2931437C2 (en) * | 1979-08-02 | 1981-09-24 | Siemens AG, 1000 Berlin und 8000 München | Circuit arrangement for controlling a signal loudspeaker |
| GB2151057A (en) * | 1983-11-17 | 1985-07-10 | Sakis Roy | Alarm device |
| GB2238412A (en) * | 1989-11-21 | 1991-05-29 | Richard Bone | Exit signalling device |
| US5293155A (en) * | 1990-05-07 | 1994-03-08 | Wheelock Inc. | Interface for a supervised multi-input audible warning system |
| CN207691933U (en) * | 2016-03-15 | 2018-08-03 | Bot 家庭自动化公司 | V recording and communication door bell and button system |
| EP4350653A1 (en) * | 2022-10-03 | 2024-04-10 | Vimar S.p.A. | Sound device for electrical installations |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2455472A (en) * | 1945-04-10 | 1948-12-07 | Bell Telephone Labor Inc | Method and system for electronically generating complex signals |
| US3196432A (en) * | 1960-09-01 | 1965-07-20 | Winston E Kock | Transistorized door annunciator utilizing capacitor discharge |
| US3114114A (en) * | 1960-11-09 | 1963-12-10 | Robert R Atherton | Voltage controlled ramp and pulse generator |
| US3183454A (en) * | 1961-04-24 | 1965-05-11 | Autophon Ag | Circuit for providing sequences of pulses and intervals |
| US3210686A (en) * | 1963-05-03 | 1965-10-05 | Teletype Corp | Unijunction oscillator with plural outputs depending on input control |
-
1966
- 1966-03-01 US US531000A patent/US3466649A/en not_active Expired - Lifetime
-
1967
- 1967-02-27 GB GB9167/67A patent/GB1180444A/en not_active Expired
- 1967-02-27 DE DE19671566699 patent/DE1566699A1/en active Pending
- 1967-02-28 CH CH302467A patent/CH457202A/en unknown
- 1967-02-28 SE SE02757/67A patent/SE340773B/xx unknown
- 1967-02-28 BE BE694799D patent/BE694799A/xx not_active Expired
- 1967-03-01 FR FR96973A patent/FR1512885A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1566699A1 (en) | 1970-04-30 |
| US3466649A (en) | 1969-09-09 |
| GB1180444A (en) | 1970-02-04 |
| SE340773B (en) | 1971-11-29 |
| FR1512885A (en) | 1968-02-09 |
| CH457202A (en) | 1968-05-31 |