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 magnetInfo
- 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- Withdrawn
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.
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)
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 |
-
1978
- 1978-08-21 FR FR7824246A patent/FR2434434A1/en not_active Withdrawn
Patent Citations (6)
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 |