Patents by Inventor David R. Spears

David R. Spears 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).

  • Multi-port connecting device
    Patent number: 5354464
    Abstract: An improved multi-port connection device (10) adapted to receive prior art membrane and filter canisters (12) and to make connections between plural connection devices more convenient and versatile, comprising a plurality of flow ports (43,45,47) which are all at a common level, two of which communicate through apertures (52,54) in a barrier wall (55) forming a female connector with input and output flow paths (18,16) in the canister male connector, said apertures (52,54) being positioned in the barrier wall (55) on separate sides of an O-ring seal at locations communicating with the input and output flow paths (18,16).
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: October 11, 1994
    Assignee: Water Factory Systems
    Inventors: Jack P. Slovak, Laurence W. Bassett, Robert A. Slovak, David R. Spears
  • Purified water dispenser
    Patent number: D350384
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: September 6, 1994
    Assignee: Water Factory Systems
    Inventors: Laurence W. Bassett, Robert A. Slovak, David R. Spears
  • Counter-top water purification system
    Patent number: D366094
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: January 9, 1996
    Assignee: Water Factory Systems, Inc.
    Inventors: Matthew F. Duncan, Robert A. Slovak, David R. Spears, Jack P. Slovak