Title:
CASH BOX SWITCHING DEVICE FOR PUBLIC TELEPHONE SET
Document Type and Number:
Japanese Patent JP3140888
Kind Code:
B2
Abstract:
PURPOSE: To prevent theft by utilizing a dial in addition to a key in a coin public telephone set so as to enter a password registered individually so as to extract the cash box.
CONSTITUTION: When a maintenance personnel uses a key 5b to open a door 4 of a cash box extract port, it is sensed by a key sensor 6 and a buzzer 13 is energized via a control circuit 8. Then a password registered in a memory section 7a of a password registration collation circuit 7 is inputted through a dial 2. When the correct password is inputted from the dial 2, it is detected by a dial signal detection section 7b detects it and the circuit 8 stops ringing of the buzzer 13 to drive a solenoid drive circuit 9. The circuit 9 excites a solenoid magnet 10 to remove a lock piece 11 connecting to an armature 10a from a notch 12 of a cash box 3, thereby releasing the lock of the cash box 3, by which the cash box is extracted. Thus, theft due to a forged key is prevented.
Inventors:
Hideo Tanaka
Shuji Kimura
Shuji Kimura
Application Number:
JP21922293A
Publication Date:
March 05, 2001
Filing Date:
August 12, 1993
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04M17/00; (IPC1-7): H04M17/00
Domestic Patent References:
| JP5173429A | ||||
| JP380757A |
Attorney, Agent or Firm:
Jinnosuke Tsunoda
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