Patents by Inventor Francis J. DiRenzi

Francis J. DiRenzi 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).

  • Programmable boat lift control system
    Patent number: 5593247
    Abstract: A boat lift control system may be programmed so that with a push of a button, either remotely or adjacent the system, the lift may lift or lower a boat to a pre-programmed elevation. Plural elevations may be programmed into the system including those corresponding to, for example, low tide, high tide, a loading elevation and a storage elevation. The inventive system also includes a manual override allowing manual operation of the lift to any desired elevation. Upper and lower limit stop mechanisms prevent movements of the lift beyond pre-set upper and lower limits.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: January 14, 1997
    Assignee: Endcor Inc.
    Inventors: James A. Endres, Francis J. DiRenzi, Gideon Hecht