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GB1441618A - Alarm systems - Google Patents

Alarm systems

Info

Publication number
GB1441618A
GB1441618A GB2122073A GB2122073A GB1441618A GB 1441618 A GB1441618 A GB 1441618A GB 2122073 A GB2122073 A GB 2122073A GB 2122073 A GB2122073 A GB 2122073A GB 1441618 A GB1441618 A GB 1441618A
Authority
GB
United Kingdom
Prior art keywords
warning device
operable
devices
intruder
control switch
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
GB2122073A
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.)
SECURITY CONTROL ENG
Original Assignee
SECURITY CONTROL ENG
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 SECURITY CONTROL ENG filed Critical SECURITY CONTROL ENG
Priority to GB2122073A priority Critical patent/GB1441618A/en
Publication of GB1441618A publication Critical patent/GB1441618A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

1441618 Intruder alarms; fire alarms SECURITY CONTROL ENG Ltd 1 May 1974 [4 May 1973] 21220/73 Heading G4N An alarm system suitable as intruder or fire alarms for guarding a building comprises a first warning device to be located inside and operable immediately upon tripping of the system, a second warning device to be located outside the building and operable after an interval determined by a delay device unless the system itself is rendered inoperative during that interval by a master control switch. The master control switch may be incorporated in a door lock or be operable by a key or by a secret combination. The sensing switches may be associated with doors, windows, &c. The system can be tested manually. The first and second warning devices may include acoustic devices such as a bell and/or visual devices such as a flashing light. The system may be arranged so that the first warning device ceases operation automatically once the second warning device becomes operational.
GB2122073A 1973-05-04 1973-05-04 Alarm systems Expired GB1441618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2122073A GB1441618A (en) 1973-05-04 1973-05-04 Alarm systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2122073A GB1441618A (en) 1973-05-04 1973-05-04 Alarm systems

Publications (1)

Publication Number Publication Date
GB1441618A true GB1441618A (en) 1976-07-07

Family

ID=10159216

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2122073A Expired GB1441618A (en) 1973-05-04 1973-05-04 Alarm systems

Country Status (1)

Country Link
GB (1) GB1441618A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165682A (en) * 1984-09-18 1986-04-16 Milan Herman Miessler Smoke alarm for kitchens
GB2203581A (en) * 1987-04-15 1988-10-19 Jack Y C Chen Fire and/or burglar alarm system
GB2254464A (en) * 1991-04-06 1992-10-07 William Henry Saint Audible alarms
GB2266801A (en) * 1992-05-08 1993-11-10 Philip Arthur Atkinson Intrusion detection and alarm system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165682A (en) * 1984-09-18 1986-04-16 Milan Herman Miessler Smoke alarm for kitchens
GB2203581A (en) * 1987-04-15 1988-10-19 Jack Y C Chen Fire and/or burglar alarm system
GB2254464A (en) * 1991-04-06 1992-10-07 William Henry Saint Audible alarms
GB2266801A (en) * 1992-05-08 1993-11-10 Philip Arthur Atkinson Intrusion detection and alarm system

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee