GB191320028A - Improvements in and relating to Electric Burglar Alarms. - Google Patents

Improvements in and relating to Electric Burglar Alarms.

Info

Publication number
GB191320028A
GB191320028A GB191320028DA GB191320028A GB 191320028 A GB191320028 A GB 191320028A GB 191320028D A GB191320028D A GB 191320028DA GB 191320028 A GB191320028 A GB 191320028A
Authority
GB
United Kingdom
Prior art keywords
contact
circuits
closed
burglar
magnet
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
Other languages
English (en)
Inventor
Alfons Renczewitz
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
Application granted granted Critical
Publication of GB191320028A publication Critical patent/GB191320028A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
    • H01H35/144—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch operated by vibration

Landscapes

  • Burglar Alarm Systems (AREA)
GB191320028D 1913-09-04 1913-09-04 Improvements in and relating to Electric Burglar Alarms. Expired GB191320028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191320028T 1913-09-04

Publications (1)

Publication Number Publication Date
GB191320028A true GB191320028A (en) 1914-04-02

Family

ID=34359999

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191320028D Expired GB191320028A (en) 1913-09-04 1913-09-04 Improvements in and relating to Electric Burglar Alarms.

Country Status (3)

Country Link
DE (1) DE274902C (enrdf_load_stackoverflow)
FR (1) FR461221A (enrdf_load_stackoverflow)
GB (1) GB191320028A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113362498A (zh) * 2021-05-18 2021-09-07 侯向芝 一种用于电能计量箱的防窃型身份识别系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113362498A (zh) * 2021-05-18 2021-09-07 侯向芝 一种用于电能计量箱的防窃型身份识别系统
CN113362498B (zh) * 2021-05-18 2022-10-18 广东佰林电气设备厂有限公司 一种用于电能计量箱的防窃型身份识别系统

Also Published As

Publication number Publication date
DE274902C (enrdf_load_stackoverflow)
FR461221A (fr) 1913-12-23

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