Patents by Inventor Ralph A. Murphy

Ralph A. Murphy 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).

  • Adapter for coin-operated machine
    Patent number: 5392893
    Abstract: An adapter for a coin-operated machine is mounted on the front face of the machine and covers the region for receiving coins. The adapter comprises a slot on the upper portion thereof and a tortuous passageway leading to the region for receiving coins. The tortuous path comprises a first downwardly and laterally extending segment having a liquid permeable bottom wall. Preferably, a second downwardly and laterally extending segment extends beneath the first segment, the second segment having a liquid impermeable roof.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: February 28, 1995
    Inventors: Ralph A. Murphy, David C. Collins