FR2434434A1 - Coin sensing appts. using permanent magnet - has guides directing inserted coin to cause change in magnetic field to induce EMF in sensor coil on pole extension magnet - Google Patents

Coin sensing appts. using permanent magnet - has guides directing inserted coin to cause change in magnetic field to induce EMF in sensor coil on pole extension magnet

Info

Publication number
FR2434434A1
FR2434434A1 FR7824246A FR7824246A FR2434434A1 FR 2434434 A1 FR2434434 A1 FR 2434434A1 FR 7824246 A FR7824246 A FR 7824246A FR 7824246 A FR7824246 A FR 7824246A FR 2434434 A1 FR2434434 A1 FR 2434434A1
Authority
FR
France
Prior art keywords
coin
magnetic field
magnet
pole extension
appts
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Withdrawn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
FR7824246A
Other languages
French (fr)
Inventor
Jiri J Hovorka
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 FR7824246A priority Critical patent/FR2434434A1/en
Publication of FR2434434A1 publication Critical patent/FR2434434A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G07D5/08—Testing the magnetic or electric properties

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Coins (AREA)

Abstract

The coin indicating appts. uses a sensor containing a permanent magnet and a pole extension magnet spaced a predetermined distance from one pole to form a space including a portion for receiving coins and similar. The permanent magnet polarises the pole extension magnet to establish a magnetic field that is changed by an interposed coin or similar. A sensor coil having a predetermined number of ampere-turns is disposed about a portion of the pole extension magnet. A change in the magnetic field induces an e.m.f. in the coil to provide an output signal uniquely indicative of the interposed coil or similar. Guides are provided to direct the latter into the magnetic field.
FR7824246A 1978-08-21 1978-08-21 Coin sensing appts. using permanent magnet - has guides directing inserted coin to cause change in magnetic field to induce EMF in sensor coil on pole extension magnet Withdrawn FR2434434A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7824246A FR2434434A1 (en) 1978-08-21 1978-08-21 Coin sensing appts. using permanent magnet - has guides directing inserted coin to cause change in magnetic field to induce EMF in sensor coil on pole extension magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7824246A FR2434434A1 (en) 1978-08-21 1978-08-21 Coin sensing appts. using permanent magnet - has guides directing inserted coin to cause change in magnetic field to induce EMF in sensor coil on pole extension magnet

Publications (1)

Publication Number Publication Date
FR2434434A1 true FR2434434A1 (en) 1980-03-21

Family

ID=9211962

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7824246A Withdrawn FR2434434A1 (en) 1978-08-21 1978-08-21 Coin sensing appts. using permanent magnet - has guides directing inserted coin to cause change in magnetic field to induce EMF in sensor coil on pole extension magnet

Country Status (1)

Country Link
FR (1) FR2434434A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR938202A (en) * 1941-08-13 1948-09-08 Int Standard Electric Corp Coin rejectors and the like
US3065412A (en) * 1958-12-23 1962-11-20 Union Carbide Corp Metal detector
FR2140656A1 (en) * 1971-06-11 1973-01-19 Florstedt Ferdinand
DE2240151A1 (en) * 1972-08-16 1974-02-21 Standard Elektrik Lorenz Ag DETECTOR FOR MUENZKANAELE
FR2275829A1 (en) * 1974-06-19 1976-01-16 Automatisme Cie Gle DEVICE FOR THE RECOGNITION OF A CATEGORY OF COINS
DE2444950A1 (en) * 1974-09-20 1976-04-08 Kabel Metallwerke Ghh Testing for coins with magnetic properties - uses a continuous cycle to check for sound dimensions weight and quantity

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR938202A (en) * 1941-08-13 1948-09-08 Int Standard Electric Corp Coin rejectors and the like
US3065412A (en) * 1958-12-23 1962-11-20 Union Carbide Corp Metal detector
FR2140656A1 (en) * 1971-06-11 1973-01-19 Florstedt Ferdinand
DE2240151A1 (en) * 1972-08-16 1974-02-21 Standard Elektrik Lorenz Ag DETECTOR FOR MUENZKANAELE
FR2275829A1 (en) * 1974-06-19 1976-01-16 Automatisme Cie Gle DEVICE FOR THE RECOGNITION OF A CATEGORY OF COINS
DE2444950A1 (en) * 1974-09-20 1976-04-08 Kabel Metallwerke Ghh Testing for coins with magnetic properties - uses a continuous cycle to check for sound dimensions weight and quantity

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Legal Events

Date Code Title Description
ST Notification of lapse