Patents by Inventor Andrew J. Yeiser

Andrew J. Yeiser has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electronic coin detector
    Patent number: 5085309
    Abstract: An electronic device with no moving parts identifies and counts coins. The device may comprise a plurality of sensors and appropriate circuitry for interpreting the signals emitted by the sensors. In a preferred embodiment, a sensor to detect the presence of a ferrous object, a sensor to detect the presence of a solid object, and a sensor to measure the weight of a coin are each implemented in an inexpensive and reliable manner by use of electronic components. Sensed information is collected and processed by a programmable microprocessor.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: February 4, 1992
    Inventors: Phil A. Adamson, Andrew J. Yeiser