Abstract: A coin comprises a core made of a first metal, an outer ring surrounding the core concentrically and made of a further metal, and a central ring between the core and outer ring fixedly connected thereto. The central ring consists of an electrically insulating material. Further, the central ring is transparent to electromagnetic waves of a first wavelength range and is less transparent or not transparent to a second wavelength range. Methods for testing the coin are also described.

Abstract: A device for dispensing coins includes a rotatingly-driven rotary disk, a coin container arranged above the rotary disk, through which coins are fed to a top side of the rotary disk, and a coin discharge. A wiper device is also includes and comprises at least one elastic wiper arm arranged above and at a distance from the top side of the rotary disk and turning with the rotary disk.

Abstract: A device for dispensing coins includes a rotatingly-driven rotary disk, a coin container arranged above the rotary disk, through which coins are fed to a top side of the rotary disk, and a coin discharge. A wiper device is also includes and comprises at least one elastic wiper arm arranged above and at a distance from the top side of the rotary disk and turning with the rotary disk.

Abstract: A coin comprises a core made of a first metal, an outer ring surrounding the core concentrically and made of a further metal, and a central ring between the core and outer ring fixedly connected thereto. The central ring consists of an electrically insulating material Further, the central ring is transparent to electromagnetic waves of a first wavelength range and is less transparent or not transparent to a second wavelength range. Methods for testing the coin are also described.

Abstract: A coin collection apparatus for use with a coin validity testing device. The apparatus includes an electromagnetically actuated accept flap located downstream of the testing device which accept flap is pivotally supported to rotate about a horizontal axis to direct coins to a reject channel or an accept channel in response to signals delivered by the testing device. The accept flap is biased by a spring to the reject position. The apparatus further includes a first sensor located downstream of the accept flap and a second sensor located downstream of the first sensor and a processor to which the signals of the testing device and the sensors are supplied.

Abstract: A coin validator which discriminates valuable coins includes a coin path along which the coins roll. A leaf spring is fixed at one end and has a spring member which projects into the coin path at the other end when the leaf spring is in a rest position. The leaf spring oscillates when the spring member is struck by a rolling coin. An evaluation circuit produces a timing signal as a function of the elapsed time between the striking of the spring member by the rolling coin and the time when the spring member first approaches the rest position after being struck. A memory stores reference values corresponding to valuable coins and a comparator compares the timing signal to the reference values for discriminating valuable coins.

Abstract: A coin accepting apparatus. The apparatus includes a pair of generally parallel, spaced-apart plates. The plates define a coin track for receiving and guiding coins wherein each plate has a side facing the coin track and an opposing side facing away from the coin track. The apparatus further includes a sensor on the opposing side of one plate for detecting a characteristic of coins to be validated and first and second retainers on the opposing side of the plate for inhibiting movement of the sensor. The first retainer includes a spring arm for engaging the sensor and biasing the sensor against the opposing side of the plate. The second retainer engages the sensor and constrains movement of the sensor along an axis generally perpendicular to the opposing side of the plate.