Patents by Inventor Karl-Heinz Wager

Karl-Heinz Wager 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: 5183265
    Abstract: In a racquet, particularly a tennis racquet, having a handle (8) and a stretcher frame secured via a throat region (2) for stringing in which the cross-section of the stretcher frame measured transversely to the stringing has at least one section of largest dimension, the cross-section (a, b, c) of the stretcher frame in the throat region (2) and in the region of the racquet head (3) remote from the throat region is greater than in the region of the stretcher frame lying therebetween, whereby the cross-section (c) in the region of the racquet head (3) remote from the throat region is greater than the cross-section (b) in the throat region.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: February 2, 1993
    Assignee: Head Sportgerate Gesellschaft m.b.H. & Co. OHG
    Inventors: Helmut Umlauft, Karl-Heinz Wager
  • Patent number: 5075056
    Abstract: A process for the production of a ball game racket frame, in particular a tennis racket, squash racket or badminton racket frame, with a head and a shaft, in which at least the head and/or the shaft is made of a fiber-reinforced plastic as a hollow body, an injectable matrix, optionally with a reinforcing fiber material and an inert gas under pressure, in particular N.sub.2, is injected into a mold to form the hollow space of the hollow body.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: December 24, 1991
    Assignee: Head Sportgerate Gesellschaft m.b.H. & Co. OHG
    Inventors: Helmut Umlauft, Karl-Heinz Wager
  • Patent number: 4776592
    Abstract: A device for the protection of strings on the frame of a racket, such as for example, a tennis racket, comprises a band-like body which includes a plurality of tubular sleeves spaced a distance corresponding to the distance of bores in the frame of the racket. The band-like body further includes a peripheral groove which groove is in open connection with the tubular sleeves. The strings are placed into the peripheral groove and are strung through the tubular sleeves. The band-like body has protruding wall parts located on the side of the groove facing the tubular sleeves, which wall parts are connected with lateral parts of the body that overlap the frame. The protruding wall parts close the peripheral groove so that the strings lie protected within the peripheral groove.
    Type: Grant
    Filed: July 9, 1986
    Date of Patent: October 11, 1988
    Assignee: Head Sportgerate Gesellschaft m.b.H. & Co.OHG.
    Inventors: Helmut Umlauft, Karl-Heinz Wager