IT1016769B - ACOUSTIC ALARM DEVICE INCLUDING AN ELECTRIC PIEZO TRANSDUCER - Google Patents

ACOUSTIC ALARM DEVICE INCLUDING AN ELECTRIC PIEZO TRANSDUCER

Info

Publication number: IT1016769B
Authority: IT; Italy
Prior art keywords: device including; alarm device; acoustic alarm; piezo transducer; electric piezo
Prior art date: 1973-08-09

Application number

IT69462/74A

Other languages

Italian (it)

Original Assignee

Mallory & Co Inc P R

Priority date (The priority date 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 date listed.)

1973-08-09

Filing date

1974-08-02

Publication date

1977-06-20

1974-08-02 Application filed by Mallory & Co Inc P R filed Critical Mallory & Co Inc P R

1977-06-20 Application granted granted Critical

1977-06-20 Publication of IT1016769B publication Critical patent/IT1016769B/en

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)
Alarm Systems (AREA)
Electromechanical Clocks (AREA)

IT69462/74A 1973-08-09 1974-08-02 ACOUSTIC ALARM DEVICE INCLUDING AN ELECTRIC PIEZO TRANSDUCER IT1016769B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US38694073A	1973-08-09	1973-08-09

Publications (1)

Publication Number	Publication Date
IT1016769B true IT1016769B (en)	1977-06-20

Family

ID=23527734

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT69462/74A IT1016769B (en)	1973-08-09	1974-08-02	ACOUSTIC ALARM DEVICE INCLUDING AN ELECTRIC PIEZO TRANSDUCER

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)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS50133074U (en) *	1974-04-16	1975-11-01
JPS50133076U (en) *	1974-04-16	1975-11-01
JPS50133075U (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
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	An electric grounding column with looseness indication function

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number	Publication date
DE2438057A1 (en)	1975-03-06
FR2240489A1 (en)	1975-03-07
BR7405910D0 (en)	1975-05-27
DE7426907U (en)	1977-11-03
GB1435668A (en)	1976-05-12
JPS5046295A (en)	1975-04-24
FR2240489B3 (en)	1977-06-03

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