Patents by Inventor Robert W. Marklew

Robert W. Marklew 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).

  • Swimming pool cleaner discs
    Patent number: 5421054
    Abstract: Discs and a footpad for devices such as automatic swimming pool cleaners are disclosed. The discs incorporate upwardly-extending, non-truncated fins protruding radially from their peripheries. The peripheries themselves, moreover, define a plurality of tongues for increased flexibility, and both the discs and footpad may include ramped segments facilitating movement over obstacles extending from swimming pool surfaces.
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: June 6, 1995
    Assignee: Zarina Holding C.V.
    Inventors: Andrew W. Dawson, John T. Evans, Alain J. Gazzola, Robert W. Marklew, Chris A. Rice, Desroy D. Smith