GB1273690A - An electroacoustical horn - Google Patents

An electroacoustical horn

Info

Publication number
GB1273690A
GB1273690A GB3069970A GB3069970A GB1273690A GB 1273690 A GB1273690 A GB 1273690A GB 3069970 A GB3069970 A GB 3069970A GB 3069970 A GB3069970 A GB 3069970A GB 1273690 A GB1273690 A GB 1273690A
Authority
GB
United Kingdom
Prior art keywords
coil
contact
diaphragm
permanent magnet
electroacoustical
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
GB3069970A
Inventor
Domenico Frigo
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
Application filed by Individual filed Critical Individual
Priority to GB3069970A priority Critical patent/GB1273690A/en
Publication of GB1273690A publication Critical patent/GB1273690A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G10K9/15—Self-interrupting arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

1,273,690. Electroacoustical horns. D. FRIGO. 24 June, 1970, No. 30699/70. Heading G5J. An electroacoustical horn comprises a permanent magnet 35, which provides a magnetic field having lines of flux extending radially with respect to a cylindrical coil 16. The coil 16 is series connected to a pair of normally closed contacts 17, 21; the contact 21 being fixed, and the contact 17 being movable. The contact 17 is connected to a conductive resilient arm 18 which is connected to the windings of the coil 16 by means of a rivet 19. The permanent magnet 35 is held inside an inverted cup 34 of ferromagnetic material, which is made fast with a ferromagnetic block 33, a stem 32 and the diaphragm 14. When current flows through the coil, the permanent magnet experiences a downward force, thus moving the block 33 and stem 32 which urges the resilient arm 18 downward and causing the movable contact 17 away from the fixed contact 21. The current thus stops, and due to the resiliency of the diaphragm, the assembly moves back to its initial position and the process repeats. Sound, produced by the diaphragm 14 is passed into a trumpet 13. The position of the fixed contact can be altered by means of a screw (not shown). In an alternative arrangement, the magnet may be connected to the case, and the coil to the diaphragm.
GB3069970A 1970-06-24 1970-06-24 An electroacoustical horn Expired GB1273690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3069970A GB1273690A (en) 1970-06-24 1970-06-24 An electroacoustical horn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3069970A GB1273690A (en) 1970-06-24 1970-06-24 An electroacoustical horn

Publications (1)

Publication Number Publication Date
GB1273690A true GB1273690A (en) 1972-05-10

Family

ID=10311745

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3069970A Expired GB1273690A (en) 1970-06-24 1970-06-24 An electroacoustical horn

Country Status (1)

Country Link
GB (1) GB1273690A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103531194A (en) * 2012-07-05 2014-01-22 通用汽车环球科技运作有限责任公司 For electric horn means of transport and means of transport
CN107580283A (en) * 2017-07-26 2018-01-12 苏州逸巛声学科技有限公司 A kind of receiver and its assembly technology

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103531194A (en) * 2012-07-05 2014-01-22 通用汽车环球科技运作有限责任公司 For electric horn means of transport and means of transport
CN103531194B (en) * 2012-07-05 2017-11-03 通用汽车环球科技运作有限责任公司 Electric horn device and transport facility for transport facility
CN107580283A (en) * 2017-07-26 2018-01-12 苏州逸巛声学科技有限公司 A kind of receiver and its assembly technology

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees