GB881197A - Magnetic alarm locks - Google Patents

Magnetic alarm locks

Info

Publication number
GB881197A
GB881197A GB29960A GB29960A GB881197A GB 881197 A GB881197 A GB 881197A GB 29960 A GB29960 A GB 29960A GB 29960 A GB29960 A GB 29960A GB 881197 A GB881197 A GB 881197A
Authority
GB
United Kingdom
Prior art keywords
bolt
pivoted
door
alarm
magnetic alarm
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
GB29960A
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.)
DESMOND LESLIE MERRIFIELD
Original Assignee
DESMOND LESLIE MERRIFIELD
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 DESMOND LESLIE MERRIFIELD filed Critical DESMOND LESLIE MERRIFIELD
Priority to GB29960A priority Critical patent/GB881197A/en
Publication of GB881197A publication Critical patent/GB881197A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
    • E05B47/023—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means the bolt moving pivotally or rotatively
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B45/00—Alarm locks
    • E05B45/06—Electric alarm locks
    • E05B45/08—Electric alarm locks with contact making inside the lock or in the striking plate
    • E05B45/12—Electric alarm locks with contact making inside the lock or in the striking plate by movement of the bolt
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
    • E05B47/0006—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a non-movable core; with permanent magnet

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

881,197. Burglar alarms. MERRIFIELD, D. L. June 21, 1960 [Jan. 5, 1960], No. 299/60. Class 118. [Also in Group XXV] A lock comprises an electromagneticallyoperated pivoted bolt which closes contacts to complete an alarm circuit if it is moved beyond the locked position. As shown, a spring-biased bolt 8 is pivoted on a pin 7 in the jamb 2 of a door 3 and carries a permanent magnet 16 which may be either attracted or repelled by an electromagnet 17. An attempt to force open the locked door 3 in the direction of the arrow A causes the bolt 8 to move further out and thereby close contacts 21, 22 to operate an alarm 24.
GB29960A 1960-01-05 1960-01-05 Magnetic alarm locks Expired GB881197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB29960A GB881197A (en) 1960-01-05 1960-01-05 Magnetic alarm locks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29960A GB881197A (en) 1960-01-05 1960-01-05 Magnetic alarm locks

Publications (1)

Publication Number Publication Date
GB881197A true GB881197A (en) 1961-11-01

Family

ID=9701926

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29960A Expired GB881197A (en) 1960-01-05 1960-01-05 Magnetic alarm locks

Country Status (1)

Country Link
GB (1) GB881197A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007112830A1 (en) * 2006-03-29 2007-10-11 Preh Gmbh Blocking device for at least partially blocking a relative movement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007112830A1 (en) * 2006-03-29 2007-10-11 Preh Gmbh Blocking device for at least partially blocking a relative movement

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