Coin testing arrangement for parking meters

US3977507A · kind A · utility

Assignee

• Kienzle Apparate GmbH · DE

Inventor

• Bernhard Kaiser · Bonndorf, DE

Key dates

• Filing date: Sep 19, 1975
• Grant date: Aug 31, 1976
• Expiry date: Sep 19, 1995

Classification

• Technology area (CPC G): Physics
• CPC primary: G07D5/08
• WIPO field: Control
• WIPO sector: Instruments

Abstract

Coins inserted into a parking meter are tested as to diameter, the presence of one or more holes and the content of ferromagnetic material. In the latter test, the coins are transported through a coin transport channel extending intermediate a coin-insertion location and a coin receptacle. The channel has a breadth which exceeds the thickness of the coins to be processed by an amount permitting coins passing through the channel to shift in direction transverse to the direction of their travel. A magnet arrangement attracts magnetically attractable coins into contact with a wall of the channel as such coins pass through the channel. A sensing arrangement controls the setting of a parking time in dependence upon whether coins passing through the channel are attracted into contact with the wall. The sensing arrangement includes a sensing member which extends into the coin transport channel so positioned and mounted as to be displaced to a predetermined position by a coin which during its travel is being magnetically held against the wall. The setting of a parking time is prevented unless the sensing member is caused to assume the predetermined position.