HK50882A - Electronic buzzer - Google Patents
Electronic buzzerInfo
- Publication number
- HK50882A HK50882A HK508/82A HK50882A HK50882A HK 50882 A HK50882 A HK 50882A HK 508/82 A HK508/82 A HK 508/82A HK 50882 A HK50882 A HK 50882A HK 50882 A HK50882 A HK 50882A
- Authority
- HK
- Hong Kong
- Prior art keywords
- vibrating
- air spring
- resonant frequencies
- plate
- plates
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C21/00—Producing acoustic time signals by electrical means
- G04C21/02—Constructional details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/08—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers separated by air or other fluid
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Glass Compositions (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Electromechanical Clocks (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8331776A JPS538594A (en) | 1976-07-13 | 1976-07-13 | Electronic buzzer |
Publications (1)
Publication Number | Publication Date |
---|---|
HK50882A true HK50882A (en) | 1982-12-03 |
Family
ID=13799036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK508/82A HK50882A (en) | 1976-07-13 | 1982-11-25 | Electronic buzzer |
Country Status (6)
Country | Link |
---|---|
US (1) | US4159472A (xx) |
JP (1) | JPS538594A (xx) |
CH (1) | CH629067B (xx) |
GB (1) | GB1568112A (xx) |
HK (1) | HK50882A (xx) |
SG (1) | SG44082G (xx) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5493391A (en) * | 1977-12-30 | 1979-07-24 | Seiko Instr & Electronics Ltd | Small sized audio unit |
US4251807A (en) * | 1979-03-08 | 1981-02-17 | Pickering & Company | Miniature buzzer |
JPS5665012A (en) * | 1979-11-02 | 1981-06-02 | Kanegafuchi Chem Ind Co Ltd | Production of soft resin |
DE3138068A1 (de) * | 1980-11-10 | 1982-07-08 | Marukokeihouki Co. Ltd., Nagano | Piezoelektrische mehrfrequenz-schallerzeugungsvorrichtung |
JPS59175850U (ja) * | 1983-05-06 | 1984-11-24 | 三菱重工業株式会社 | 石炭焚mhd燃焼器用スラグ排出装置 |
JPS60134700A (ja) * | 1983-12-23 | 1985-07-17 | Nippon Denso Co Ltd | 発音装置 |
KR900003594B1 (ko) * | 1985-01-07 | 1990-05-26 | 니홍덴소 가부시기 가이샤 | 경보음 발생장치 |
US5990797A (en) * | 1997-03-04 | 1999-11-23 | Bkk Brands, Inc. | Ultraloud smoke detector |
FR2777095A1 (fr) * | 1998-04-02 | 1999-10-08 | Christophe Claret Sa | Montre sonore |
DE102008011302A1 (de) * | 2008-02-27 | 2009-09-10 | Siemens Aktiengesellschaft | Flächenlautsprecher |
EP2461219B1 (fr) * | 2010-12-02 | 2020-10-14 | Montres Breguet SA | Membrane de rayonnement acoustique pour une boîte à musique ou une montre à sonnerie |
EP2461220B1 (fr) * | 2010-12-02 | 2019-11-06 | Montres Breguet SA | Membrane de rayonnement acoustique pour une boîte à musique ou une montre à sonnerie |
CH710166B1 (fr) * | 2014-10-15 | 2018-12-14 | Montres Breguet Sa | Agencement à membranes de rayonnement acoustique pour une montre musicale ou à sonnerie. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1773605A (en) * | 1927-05-18 | 1930-08-19 | Sefton Wilfred | Loud-speaker |
GB440041A (en) * | 1934-06-19 | 1935-12-19 | Robert Rodger Glen | Improvements in or relating to loud-speakers and the like |
US2903673A (en) * | 1954-01-06 | 1959-09-08 | Harris Transducer Corp | Acoustical impedance-matching transducer |
US3074504A (en) * | 1961-05-25 | 1963-01-22 | Liberty Mfg Corp | Loud-speaker |
-
1976
- 1976-07-13 JP JP8331776A patent/JPS538594A/ja active Granted
-
1977
- 1977-07-12 CH CH862877A patent/CH629067B/fr unknown
- 1977-07-12 GB GB29208/77A patent/GB1568112A/en not_active Expired
- 1977-07-13 US US05/815,441 patent/US4159472A/en not_active Expired - Lifetime
-
1982
- 1982-09-11 SG SG440/82A patent/SG44082G/en unknown
- 1982-11-25 HK HK508/82A patent/HK50882A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CH629067B (fr) | |
CH629067GA3 (xx) | 1982-04-15 |
JPS538594A (en) | 1978-01-26 |
JPS5736598B2 (xx) | 1982-08-04 |
GB1568112A (en) | 1980-05-29 |
US4159472A (en) | 1979-06-26 |
SG44082G (en) | 1983-02-25 |
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