GB1385927A - Alarm devices - Google Patents

Alarm devices

Info

Publication number
GB1385927A
GB1385927A GB5471572A GB5471572A GB1385927A GB 1385927 A GB1385927 A GB 1385927A GB 5471572 A GB5471572 A GB 5471572A GB 5471572 A GB5471572 A GB 5471572A GB 1385927 A GB1385927 A GB 1385927A
Authority
GB
United Kingdom
Prior art keywords
alarm
contacts
cord
generator
arm
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
GB5471572A
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.)
National Presto Industries Inc
Original Assignee
National Presto 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 National Presto Industries Inc filed Critical National Presto Industries Inc
Publication of GB1385927A publication Critical patent/GB1385927A/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
    • G08B13/02—Mechanical actuation
    • G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Burglar Alarm Systems (AREA)
GB5471572A 1972-04-27 1972-11-27 Alarm devices Expired GB1385927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US248050A US3887909A (en) 1972-04-27 1972-04-27 Alarm device

Publications (1)

Publication Number Publication Date
GB1385927A true GB1385927A (en) 1975-03-05

Family

ID=22937449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5471572A Expired GB1385927A (en) 1972-04-27 1972-11-27 Alarm devices

Country Status (4)

Country Link
US (1) US3887909A (enrdf_load_stackoverflow)
JP (1) JPS4923599A (enrdf_load_stackoverflow)
AU (1) AU468636B2 (enrdf_load_stackoverflow)
GB (1) GB1385927A (enrdf_load_stackoverflow)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993988A (en) * 1975-06-02 1976-11-23 Walter John W Intrusion detection apparatus to signal movement of a partition
JPS5385084A (en) * 1976-12-21 1978-07-27 Asahi Engineering Method of regulating direction of materials to be carrying in air table
US4266216A (en) * 1979-02-12 1981-05-05 Trusty Von A Combination portable intrusion alarm and flashlight
US4340884A (en) * 1980-05-22 1982-07-20 Maizland Ronald E Intrusion alarm
US4418336A (en) * 1981-07-17 1983-11-29 Taylor John D Alarm indicating dislocation of fire extinguisher
US4680571A (en) * 1985-03-13 1987-07-14 Dedicated Technologies, Inc. Trailer creep alarm
US4858622A (en) * 1987-04-01 1989-08-22 J.D. Monitoring, Incorporated Fall alert system with magnetically operable switch
USD310496S (en) 1988-02-25 1990-09-11 Timpone Joseph D Alert signal for waffle irons
US5072212A (en) * 1990-12-17 1991-12-10 Sorenson Gary R Entry alarm
SG54192A1 (en) * 1993-03-11 1998-11-16 Arakawa Co Ltd Crime prevention display device exhibit crime prevention alarm control method and apparatus thereof
AU707052B2 (en) * 1995-10-27 1999-07-01 Entwistle Company, The Multipurpose energy absorbing barrier system
US5624203A (en) * 1995-10-27 1997-04-29 The Entwistle Company Energy absorbing barrier system with crash indication
US6239704B1 (en) * 2000-03-31 2001-05-29 Professional Security Corporation Alarm device for physically challenged individuals
US20070175097A1 (en) * 2005-10-17 2007-08-02 David Thorne Pet door with built in alarm
CN104252760A (zh) * 2013-06-25 2014-12-31 成都旋极历通信息技术有限公司 用于飞机的敲击检测报警器
CN113672462B (zh) * 2021-08-20 2023-06-20 东营科技职业学院 一种多功能计算机故障报警装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US763386A (en) * 1903-12-12 1904-06-28 Elbert Lamont Fitch Alarm device.
US793775A (en) * 1904-08-29 1905-07-04 Julius G Breitenstein Fire and burglar alarm.
US1238532A (en) * 1916-07-22 1917-08-28 Leon Lemberg Portable burglar-alarm.
US1452500A (en) * 1918-10-15 1923-04-24 Galerman Benjamin Burglar-alarm apparatus
US2767268A (en) * 1953-12-24 1956-10-16 John Gombos Co Inc Electrical switches
US2780689A (en) * 1954-06-11 1957-02-05 Cavera Frank J La Alarm tripping mechanism
US3450852A (en) * 1966-09-29 1969-06-17 William A Rhodes Filament actuated alarm device
US3537093A (en) * 1967-06-23 1970-10-27 Louis D Perret Alarm system
US3713132A (en) * 1970-12-30 1973-01-23 Safetech Inc Intrusion alarm for windows and other openings

Also Published As

Publication number Publication date
AU468636B2 (en) 1976-01-15
JPS4923599A (enrdf_load_stackoverflow) 1974-03-02
US3887909A (en) 1975-06-03
AU4948872A (en) 1974-05-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee