GB1480689A - Portable alarm apparatus - Google Patents

Portable alarm apparatus

Info

Publication number
GB1480689A
GB1480689A GB4981975A GB4981975A GB1480689A GB 1480689 A GB1480689 A GB 1480689A GB 4981975 A GB4981975 A GB 4981975A GB 4981975 A GB4981975 A GB 4981975A GB 1480689 A GB1480689 A GB 1480689A
Authority
GB
United Kingdom
Prior art keywords
alarm
switch
casing
sound generator
energizing circuit
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
GB4981975A
Other languages
English (en)
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries Inc
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 Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of GB1480689A publication Critical patent/GB1480689A/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
    • G10K7/00—Sirens
    • G10K7/02—Sirens in which the sound-producing member is rotated manually or by a motor
    • G10K7/04—Sirens in which the sound-producing member is rotated manually or by a motor by an electric motor

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Emergency Alarm Devices (AREA)
  • Alarm Systems (AREA)
GB4981975A 1974-12-11 1975-12-04 Portable alarm apparatus Expired GB1480689A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT7059974A IT1030082B (it) 1974-12-11 1974-12-11 Apparecchio a strena portalle segnalatore d allarme

Publications (1)

Publication Number Publication Date
GB1480689A true GB1480689A (en) 1977-07-20

Family

ID=11314121

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4981975A Expired GB1480689A (en) 1974-12-11 1975-12-04 Portable alarm apparatus

Country Status (8)

Country Link
BE (1) BE836516A (it)
CH (1) CH607176A5 (it)
DE (1) DE2552744A1 (it)
ES (1) ES443363A1 (it)
FR (1) FR2294494A1 (it)
GB (1) GB1480689A (it)
IT (1) IT1030082B (it)
NL (1) NL7514250A (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3103370A1 (de) * 1981-01-29 1982-11-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Tragbarer hausnotrufsender
US7063040B2 (en) * 2004-04-20 2006-06-20 David Terry Woods Portable air horn apparatus

Also Published As

Publication number Publication date
CH607176A5 (it) 1978-11-30
DE2552744A1 (de) 1976-06-16
NL7514250A (nl) 1976-06-15
IT1030082B (it) 1979-03-30
FR2294494B3 (it) 1979-09-21
BE836516A (nl) 1976-06-11
ES443363A1 (es) 1977-04-16
FR2294494A1 (fr) 1976-07-09

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee