Patents by Inventor Hugo Sol

Hugo Sol 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).

  • Patent number: 5299801
    Abstract: The tennis racket has the particularity that the cross-sectional area of the frame in the plane of the stringing of the head portion comprises locally widened zones opposite to each other in the region of greatest width of the head portion, measured perpendicular to the longitudinal axis in the plane of the stringing, and optionally one locally widened zone at the free end of the head portion.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: April 5, 1994
    Assignee: Donnay International S.A.
    Inventors: Hugo Sol, Isabelle Koeckelberg, Jacques Meertens
  • Patent number: 5211691
    Abstract: A tennis racket is disclosed which has a frame joined to a longitudinally extending handle on an axis of symmetry of the racket. A handle of the frame defines annular opening which is covered by stringing tensioned in a plane extending across the opening. Two connecting arms attach the handle to the frame and a reinforcement member between the two connecting arms defines a portion of the annular opening. The height of the main portion of the frame in a direction perpendicular to the stringing plane is at least essentially constant between the connecting arms and an end portion of the frame, the width of the frame in the main portion thereof being between about 50% and 75% of the frame height. Further, an end portion of the frame, including the top end thereof, has a cross section which increases from the main portion of the frame to the top end.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: May 18, 1993
    Assignee: Donnay International S.A.
    Inventor: Hugo Sol