GB1274684A - Electrical buzzer - Google Patents

Electrical buzzer

Info

Publication number
GB1274684A
GB1274684A GB30343/69A GB3034369A GB1274684A GB 1274684 A GB1274684 A GB 1274684A GB 30343/69 A GB30343/69 A GB 30343/69A GB 3034369 A GB3034369 A GB 3034369A GB 1274684 A GB1274684 A GB 1274684A
Authority
GB
United Kingdom
Prior art keywords
buzzer
armature
june
diaphragm
blade
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
Application number
GB30343/69A
Inventor
Paolo Spadini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Priority claimed from CH896668A external-priority patent/CH497017A/en
Priority claimed from CH897268A external-priority patent/CH497760A/en
Application filed by Individual filed Critical Individual
Publication of GB1274684A publication Critical patent/GB1274684A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/20—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/14—Fastening the dials to the clock or watch plates
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/30—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school
    • 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
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

1,274,684. Buzzer. P. SPADINI. 16 June, 1969 [17 June, 1968 (2)], No. 30343/69. Heading G5J. An armature 20 is secured to the centre of a spring blade 19 anchored at both ends to a base 1, the armature being coupled to a magnetic circuit 4, 5, 6 carrying coils 11, 12 forming part of a transistor oscillator circuit mounted on the same base. As the blade 19 vibrates a central projection 21 strikes a plastics diaphragm 22 carried on a threaded ring 24 adjustable against a gasket 28 and locked by a threaded cover 27. Alternatively, the magnetic assembly may be adjustable relatively to the diaphragm. The whole buzzer, including oscillator, may be formed as a self contained unit detachable from associated apparatus but with plug and socket connection for the power supply.
GB30343/69A 1968-06-17 1969-06-16 Electrical buzzer Expired GB1274684A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH896668A CH497017A (en) 1968-06-17 1968-06-17 Miniature acoustic generator
CH897268A CH497760A (en) 1968-06-17 1968-06-17 Acoustic generator

Publications (1)

Publication Number Publication Date
GB1274684A true GB1274684A (en) 1972-05-17

Family

ID=25704049

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30343/69A Expired GB1274684A (en) 1968-06-17 1969-06-16 Electrical buzzer

Country Status (3)

Country Link
US (1) US3530463A (en)
DE (1) DE1929881A1 (en)
GB (1) GB1274684A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2262559C3 (en) * 1972-12-21 1975-11-13 Voll-Elektronik Ing.-Grad. Walter Voll, 8728 Hassfurt Detection device with acoustic warning signal generator for electrically conductive and non-drainable liquids
JPS582390B2 (en) * 1973-09-10 1983-01-17 シチズン時計株式会社 densia la muudedokei
US3974499A (en) * 1973-12-12 1976-08-10 Star Seimitsu Kabushiki Kaisha Contactless buzzer
US3945004A (en) * 1974-07-11 1976-03-16 Projects Unlimited, Inc. High efficiency buzzer
DE7502725U (en) * 1975-01-30 1976-05-06 Gebrueder Junghans Gmbh, 7230 Schramberg WATERPROOF WATCH WITH A PIEZOELECTRIC BUZZER
US4199752A (en) * 1978-04-24 1980-04-22 Sonetronic Engineering, Inc. Audible signal device
DE2857746C2 (en) * 1978-08-05 1986-10-09 Lectron Products Inc., Troy, Mich. Holder for the membrane of a tone generator
DE2834470C3 (en) 1978-08-05 1982-03-25 Lectron Products Inc., Troy, Mich. Resistance element with a positive temperature coefficient for the seat belt warning system of automobiles and the electrical circuit arrangement containing this
JPS5562U (en) * 1979-04-28 1980-01-05
US4328486A (en) * 1980-10-09 1982-05-04 Pittway Corporation Electric horn with improved striker assembly
JPS625359A (en) * 1985-07-01 1987-01-12 林原　健 Resonant type vibration transmitter
GB2237677A (en) * 1989-10-07 1991-05-08 Crystalate Electronics Audible warning assembly
CH708607A2 (en) * 2013-09-26 2015-03-31 Montres Breguet Sa Piece musical watch or ring.
CN110085204B (en) * 2019-05-27 2023-11-14 南京邮电大学 Piezoelectric buzzer with adjustable sound pressure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2994078A (en) * 1959-01-09 1961-07-25 George S Uchihara Engine noise simulator

Also Published As

Publication number Publication date
US3530463A (en) 1970-09-22
DE1929881A1 (en) 1969-12-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees