GB1435668A - Alarm devices - Google Patents
Alarm devicesInfo
- Publication number
- GB1435668A GB1435668A GB3525774A GB3525774A GB1435668A GB 1435668 A GB1435668 A GB 1435668A GB 3525774 A GB3525774 A GB 3525774A GB 3525774 A GB3525774 A GB 3525774A GB 1435668 A GB1435668 A GB 1435668A
- Authority
- GB
- United Kingdom
- Prior art keywords
- board
- panel
- fingers
- housing
- transducer
- 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.)
- Expired
Links
- 239000000853 adhesive Substances 0.000 abstract 2
- 230000001070 adhesive effect Effects 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- YJLIKUSWRSEPSM-WGQQHEPDSA-N (2r,3r,4s,5r)-2-[6-amino-8-[(4-phenylphenyl)methylamino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound C=1C=C(C=2C=CC=CC=2)C=CC=1CNC1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](CO)[C@@H](O)[C@H]1O YJLIKUSWRSEPSM-WGQQHEPDSA-N 0.000 abstract 1
- 230000013011 mating Effects 0.000 abstract 1
- 229920002379 silicone rubber Polymers 0.000 abstract 1
- 239000004945 silicone rubber Substances 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
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)
Abstract
1435668 Piezo-electric transducers P R MALLORY & CO Inc 9 Aug 1974 [9 Aug 1973] 35257/74 Heading H4J An audible alarm comprising a solid state amplifier drive circuit coupled to a piezoelectric transducer 14 (Fig. 3) to produce an audible signal is mounted to a panel 60 with a cover 33 enclosing components of the solid state drive circuit The piezoelectric transducer 14 (Fig. 3) includes two drive electrodes (13, 15), Fig. 1 (not shown), and a feedback electrode (11) connected to an NPN transistor 16. The circuit also includes resistors 21, 23, 26 and power terminals 28. The components are mounted on a printed circuit board 30. A cover 33 with a cup-shaped shield is carried on board 30 by bent-over tabs 36 extending through mating holes 38 in board 30. Board 30 fits into a housing 40 against a ledge 42. The piezo-electric transducer 14 is attached by resilient adhesive 46 to a ring-shaped projection 44 on housing 40. The adhesive may be silicone rubber compound 48. Transducer 14 is connected by wires 31 to board 30. Flexible fingers 50 extend from a face 52 of housing 40. Each finger 50 includes a barb 54 comprising a ramped entry surface 56 and a stop ledge 58. As shown the flexible fingers 50 follow a circular pattern (51), Fig. 2 (not shown), to mount the alarm device 12 to panel 60 the entry edges of the fingers 50 are inserted in a panel aperture 62. The fingers 50 flex and snap into the position shown. A spacer 74 is used when the panel 60 is thinner than the distance between face 52 and stop ledge 58.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US38694073A | 1973-08-09 | 1973-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1435668A true GB1435668A (en) | 1976-05-12 |
Family
ID=23527734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3525774A Expired GB1435668A (en) | 1973-08-09 | 1974-08-09 | Alarm devices |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5046295A (en) |
| BR (1) | BR7405910D0 (en) |
| DE (2) | DE7426907U (en) |
| FR (1) | FR2240489B3 (en) |
| GB (1) | GB1435668A (en) |
| IT (1) | IT1016769B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4195284A (en) * | 1976-08-11 | 1980-03-25 | Ward & Goldstone Limited | Sound generator |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50133076U (en) * | 1974-04-16 | 1975-11-01 | ||
| JPS50133075U (en) * | 1974-04-16 | 1975-11-01 | ||
| JPS50133074U (en) * | 1974-04-16 | 1975-11-01 | ||
| JPS5526955Y2 (en) * | 1976-06-09 | 1980-06-27 | ||
| DE3230060C2 (en) * | 1981-07-31 | 1986-07-31 | Sumitomo Electric Industries, Ltd., Osaka | Piezoelectric buzzer |
| US4935909A (en) * | 1986-12-10 | 1990-06-19 | Emhart Industries Inc. | Piezoelectric signaling device |
| 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 DE7426907U patent/DE7426907U/en not_active Expired
- 1974-08-07 DE DE2438057A patent/DE2438057A1/en active Pending
- 1974-08-09 JP JP49091412A patent/JPS5046295A/ja active Pending
- 1974-08-09 GB GB3525774A patent/GB1435668A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4195284A (en) * | 1976-08-11 | 1980-03-25 | Ward & Goldstone Limited | Sound generator |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1016769B (en) | 1977-06-20 |
| DE7426907U (en) | 1977-11-03 |
| JPS5046295A (en) | 1975-04-24 |
| DE2438057A1 (en) | 1975-03-06 |
| BR7405910D0 (en) | 1975-05-27 |
| FR2240489B3 (en) | 1977-06-03 |
| FR2240489A1 (en) | 1975-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1435668A (en) | Alarm devices | |
| US3890612A (en) | High output audible alarm device utilizing a piezoelectric transducer | |
| GB1526321A (en) | Electronic control devices | |
| GB1359624A (en) | Electric alarm watch | |
| ES427139A1 (en) | Loudspeaker having a voice coil and a piezoelectric feedback transducer | |
| EP0755167A3 (en) | Piezoelectric acoustic device | |
| GB1522660A (en) | Capacitor microphones | |
| GB1446374A (en) | Watch | |
| US3701865A (en) | Acoustic transducer having diaphragm pivoted in its surround | |
| US4392747A (en) | Display device structure | |
| GB2068613A (en) | Acoustically operable electrical switching circuits | |
| GB1397662A (en) | Electroacoustic transducers | |
| JPS51146604A (en) | Device for mounting electron circuit plate on air filter housing of engine | |
| JPS5940798A (en) | Noise reduction device of microphone | |
| GB1344717A (en) | Electroacoustic device | |
| JPS628585Y2 (en) | ||
| US3742491A (en) | Tone device having positive feedback common emitter amplifier | |
| AU573809B2 (en) | A piezo-electric-acoustic transducer for electro-acoustic capsules with a structural design for the assembly | |
| CN211831098U (en) | Microphone structure and electronic equipment | |
| ES450824A1 (en) | Electric switch | |
| JPS5932938B2 (en) | Dial attachment device | |
| GB1350023A (en) | Electro acoustical transducers | |
| JPS5813348Y2 (en) | A small clock with a beep function | |
| GB596012A (en) | Piezoelectric frequency determining unit | |
| GB932276A (en) | Electro-acoustic transducers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |