Check-actuated control mechanisms – Including means to test validity of check – By testing material composition
Patent
1992-06-04
1994-05-31
Bartuska, F. J.
Check-actuated control mechanisms
Including means to test validity of check
By testing material composition
33790, G07D 506
Patent
active
053161181
DESCRIPTION:
BRIEF SUMMARY
The invention herein described refers to a device used to ascertain the mechanical characteristics of coins, for their application to coin selectors or verifiers used in coin operated machines.
Electronic selectors are known to obtain certain characteristics of coins, fundamentally electromagnetic and measurement characteristics through electro optical, inductive and, to a lesser extent, capacitive sensors.
With these types of selectors it is possible to obtain electric signals which bear a relation, for example, to the diameter of the coins, to the thickness, to the electric conductivity, to the magnetic permeability etc. The electric signals obtained are then compared with predetermined values so as to identify the coins and their ensuing acceptance or rejection.
Electronic selectors of the kind commented on have been described, for example, in British patent 2,151,062, the U.S. Pat. No. 8,403,015, and Spanish patents 540,860, 540,229 and 555,181.
Additionally, there are selectors which detect mechanical characteristics of coins, such as, volume, elasticity, etc. By analysing the impact of the coin on a beam or by determining the weight of the coins.
Selectors, in which the impact of the coins is analysed, have been described, for example, in the Swiss patent numbers 645,201 and 647,608, in the Spanish patent 514,234 and in the British patent 2173624. The measurement of the impact of the coins is not precise, as the impact brings about irregular effects which are not very repetitive, depending on the condition of the edge of the coin, the angle of incidence, the types of materials of coins and the anvil or sensor plate which receives the impact, etc.
Selectors which measure the weight of the coins have been described in the Swiss patent 624,500, the British patent 2010559 and the French patent 2335005.
The Swiss patent 624,500, refers to a coin verification device for automatic vending machines based on the measurement of the weight of the coins by means of a weighing device or electronic scale.
The British patent 2,015,559 refers to an apparatus for detecting the value of a coin, in combination with coin dimension detector mechanisms includes a weight sensor made up of a mobile plate with a phototransistor incorporated which detects the position of this plate. To determine the weight of the coin it is necessary for the coin to be retained.
The French patent 2335005 refers to a coin controlling device, which includes a mechanical weighing device in the form of a roman scale which checks if the coin is of the minimum weight.
The device which is the subject of the present invention, corresponds to the latter of the above mentioned sensors which is based on the measurement of the weight of the coins.
The device subject of the invention weighs the coins by detecting the deformations tolerated by an elastically deformable element, on which the coins fall.
In the Swiss patent 624,500 the weight of the coins is measured by detecting the displacement of a mobile element, on which the coins fall. In the device subject of the invention there is no such mobile element, but rather a deformable elastic element. The weight sensor used is different.
In comparation with the British patent 2010559, the detector subject of the present invention does not need to retain the coin in order to measure its weight. In other words, with a static measurement, the device subject of the invention realizes a dynamic measurement. On the other hand, the element with which the weight of the coins is effected, is of a completely different nature.
Finally, the device subject of the invention uses a weighing element which is different from that of the French patent 2,335,005, which on the other hand, only checks if the coin possesses the minimum weight, that is to say, it detects the possible lack of weight but not the correct weight of the coin. Nor does it provide electric signals for later checks and comparisons.
The present invention incorporates a device for ascertaining mechanical characteristics of coins, applicable to coin selector
REFERENCES:
patent: 3878711 (1975-04-01), Randolph
patent: 5062518 (1991-11-01), Chitty et al.
patent: 5085309 (1992-02-01), Adamson et al.
Ibarrola Jesus E.
Insausti Jose L. P.
Azkoyen Industrial S.A.
Bartuska F. J.
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