DK185480A - DEVICE PHONE DEVICE FOR MONTHLY CONTROL CONTROL - Google Patents

DEVICE PHONE DEVICE FOR MONTHLY CONTROL CONTROL

Info

Publication number
DK185480A
DK185480A DK185480A DK185480A DK185480A DK 185480 A DK185480 A DK 185480A DK 185480 A DK185480 A DK 185480A DK 185480 A DK185480 A DK 185480A DK 185480 A DK185480 A DK 185480A
Authority
DK
Denmark
Prior art keywords
pay telephone
control
coin holder
monthly
pay
Prior art date
Application number
DK185480A
Other languages
Danish (da)
Other versions
DK145210B (en
DK145210C (en
Inventor
N Madsen
Original Assignee
Gnt Automatic As
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 Gnt Automatic As filed Critical Gnt Automatic As
Priority to DK185480A priority Critical patent/DK145210C/en
Publication of DK185480A publication Critical patent/DK185480A/en
Publication of DK145210B publication Critical patent/DK145210B/en
Application granted granted Critical
Publication of DK145210C publication Critical patent/DK145210C/en

Links

Landscapes

  • Prepayment Telephone Systems (AREA)

Abstract

Arrangement for a pay telephone to check for the coin holder. To prevent normal operation of the pay telephone when collecting the coins, when a corresponding coin holder is not inserted, the pay telephone and the coin holder 3 are provided with oscillatory circuits L1, C1 and L2, C2, which are arranged one above the other so that a magnetic coupling is produced between their coils when the coin holder is put in place. The voltage across the oscillatory circuit L1, C1 of the pay telephone is measured by a limit value detector 14, which puts out a signal indicating the presence of the coin holder, and which is used via the amplifier circuit of the pay telephone to influence the functions of the pay telephone accordingly. <IMAGE>
DK185480A 1980-04-29 1980-04-29 DEVICE BY AN EMERGENCY PHONE DEVICE FOR THE CONTROL OF A PREVENTABLE MOUNTING CONTAINER IN THE APPLIANCE DK145210C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK185480A DK145210C (en) 1980-04-29 1980-04-29 DEVICE BY AN EMERGENCY PHONE DEVICE FOR THE CONTROL OF A PREVENTABLE MOUNTING CONTAINER IN THE APPLIANCE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK185480 1980-04-29
DK185480A DK145210C (en) 1980-04-29 1980-04-29 DEVICE BY AN EMERGENCY PHONE DEVICE FOR THE CONTROL OF A PREVENTABLE MOUNTING CONTAINER IN THE APPLIANCE

Publications (3)

Publication Number Publication Date
DK185480A true DK185480A (en) 1981-10-30
DK145210B DK145210B (en) 1982-10-04
DK145210C DK145210C (en) 1983-02-21

Family

ID=8108550

Family Applications (1)

Application Number Title Priority Date Filing Date
DK185480A DK145210C (en) 1980-04-29 1980-04-29 DEVICE BY AN EMERGENCY PHONE DEVICE FOR THE CONTROL OF A PREVENTABLE MOUNTING CONTAINER IN THE APPLIANCE

Country Status (1)

Country Link
DK (1) DK145210C (en)

Also Published As

Publication number Publication date
DK145210B (en) 1982-10-04
DK145210C (en) 1983-02-21

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Legal Events

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PBP Patent lapsed