FR2428126A1 - Electric alarm for lock - has cams to close lock release or alarm actuating circuits depending on whether correct key is inserted - Google Patents

Electric alarm for lock - has cams to close lock release or alarm actuating circuits depending on whether correct key is inserted

Info

Publication number
FR2428126A1
FR2428126A1 FR7917253A FR7917253A FR2428126A1 FR 2428126 A1 FR2428126 A1 FR 2428126A1 FR 7917253 A FR7917253 A FR 7917253A FR 7917253 A FR7917253 A FR 7917253A FR 2428126 A1 FR2428126 A1 FR 2428126A1
Authority
FR
France
Prior art keywords
alarm
lock
cams
circuit
close
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.)
Withdrawn
Application number
FR7917253A
Other languages
French (fr)
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
Priority to FR7917253A priority Critical patent/FR2428126A1/en
Publication of FR2428126A1 publication Critical patent/FR2428126A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Lock And Its Accessories (AREA)

Abstract

The electric alarm system is key-sensitive, having alarm and lock-control circuits including a motor, a relay, and an alarm. Cams may form individually insulated contacts, one being permanently live and one other being coupled to a control circuit. The correct key may be a metal electrical conductor with an insulated finger grip and closes the control circuit which includes the motor to release the bolt via a spring with a rack formation engaged by a motor driven pinion. An incorrect key may close the relay circuit to eventually close a parallel alarm circuit. The relay is electromagnetic and automatically breaks the control circuit when making the alarm circuit.
FR7917253A 1979-07-03 1979-07-03 Electric alarm for lock - has cams to close lock release or alarm actuating circuits depending on whether correct key is inserted Withdrawn FR2428126A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7917253A FR2428126A1 (en) 1979-07-03 1979-07-03 Electric alarm for lock - has cams to close lock release or alarm actuating circuits depending on whether correct key is inserted

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7917253A FR2428126A1 (en) 1979-07-03 1979-07-03 Electric alarm for lock - has cams to close lock release or alarm actuating circuits depending on whether correct key is inserted

Publications (1)

Publication Number Publication Date
FR2428126A1 true FR2428126A1 (en) 1980-01-04

Family

ID=9227432

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7917253A Withdrawn FR2428126A1 (en) 1979-07-03 1979-07-03 Electric alarm for lock - has cams to close lock release or alarm actuating circuits depending on whether correct key is inserted

Country Status (1)

Country Link
FR (1) FR2428126A1 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse