GB1295052A - - Google Patents

Info

Publication number
GB1295052A
GB1295052A GB727069A GB1295052DA GB1295052A GB 1295052 A GB1295052 A GB 1295052A GB 727069 A GB727069 A GB 727069A GB 1295052D A GB1295052D A GB 1295052DA GB 1295052 A GB1295052 A GB 1295052A
Authority
GB
United Kingdom
Prior art keywords
arm
casing
generator
contact
extending
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
GB727069A
Other languages
English (en)
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 filed Critical
Publication of GB1295052A publication Critical patent/GB1295052A/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)
  • Basic Packing Technique (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Electromechanical Clocks (AREA)
  • Electromagnets (AREA)
GB727069A 1969-02-11 1969-02-11 Expired GB1295052A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB727069 1969-02-11

Publications (1)

Publication Number Publication Date
GB1295052A true GB1295052A (enrdf_load_stackoverflow) 1972-11-01

Family

ID=9829893

Family Applications (1)

Application Number Title Priority Date Filing Date
GB727069A Expired GB1295052A (enrdf_load_stackoverflow) 1969-02-11 1969-02-11

Country Status (6)

Country Link
US (1) US3631480A (enrdf_load_stackoverflow)
AU (1) AU1108470A (enrdf_load_stackoverflow)
DE (1) DE2005599A1 (enrdf_load_stackoverflow)
ES (1) ES156006Y (enrdf_load_stackoverflow)
FR (1) FR2032716A5 (enrdf_load_stackoverflow)
GB (1) GB1295052A (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1298675A (en) * 1969-06-11 1972-12-06 Lucas Industries Ltd Electromagnetic horns
US3938143A (en) * 1971-10-22 1976-02-10 Stewart-Warner Corporation Buzzer
US3774200A (en) * 1972-11-10 1973-11-20 Gen Motors Corp Buzzer including coil with wound connections
US3864823A (en) * 1974-01-08 1975-02-11 Gen Signal Corp Method of making a buzzer structure
US4005413A (en) * 1974-01-08 1977-01-25 General Signal Corporation Buzzer construction and method of adjusting the same
US4075627A (en) * 1977-02-02 1978-02-21 Pittway Corporation Electric horn

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB767059A (en) * 1954-11-18 1957-01-30 Trix Ltd Improvements in or connected with magnetic sound generators

Also Published As

Publication number Publication date
FR2032716A5 (enrdf_load_stackoverflow) 1970-11-27
DE2005599A1 (de) 1970-09-03
ES156006Y (es) 1971-01-01
ES156006U (es) 1970-04-16
AU1108470A (en) 1971-08-12
US3631480A (en) 1971-12-28

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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