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Title: Racket for playing tennis or similar ball games
Claims: I claim: 1. A racket for playing tennis and similar ball games, said racket comprising: a frame for mounting a web of strings, said frame being of generally oval configuration having a major and a minor axis, a straight handle extending from one lengthwise end of said frame, the major axis of the frame and the center axis of the handle defining a common axis, lengthwise frame portions substantially parallel to said common axis having at least one chamber of reduced size compared to said frame portions on both sides of said common axis; and a multitude of granules freely movable relative to each other partly filling said chambers, said granules being of substantially smaller size than the chamber to enable said granules to move relative to one another and to said chamber in all directions, the crosswise and lengthwise widths of said chambers and the quantity of granules therein being so correlated that the granules in response to swinging of the racket are activated and propelled substantially crosswise to said common axis within the limits of the widths of said chambers thereby damping vibrations and frequencies generated in the frame and the handle by abrupt swinging of the racket and/or the impact of a ball on the web in the frame, said frame comprising two parallel ovally curved hollow rods and means joining said rods in parallel but crosswise spaced relationship, each of said rods including said at least one said chamber partly filled with said granules in said lengthwise frame portions substantially parallel to said common axis, and filler means disposed between said rods for engaging said strings between said rods, said joining means including means for securing said filler means to the frame. 2. The racket according to claim 1 wherein said granules are substantially spherical pellets. 3. The racket according to claim 1 wherein said granules are metal pellets. 4. The racket according to claim 1 wherein said chambers are in the form of closed holes within the lengthwise sides of the frame. 5. The racket according to claim 1 wherein a yoke is fitted between the frame and the handle and joining the handle to the frame, said yoke including a closed cavity, said cavity being partly filled with said granules. 6. The racket according to claim 1 comprising lengthwise spaced crosswise partition walls dividing the space in the hollow rod into several chambers, each of said chambers being partly filled with granules. 7. The racket according to claim 6 wherein said partition walls and the chambers defined by the same are disposed on the lengthwise sides of the frame. 8. The racket according to claim 1 comprising a metal tube shaped to form said oval frame including the chambers at least partly filled with granules, said handle and a yoke fitted in open space left by the tube at the transition from the curved tube portions defining the frame to the tube portions defining the straight handle, the edge walls of the yoke and the juxtaposed tube portions having respective lugs and holes engageable with each other for securing the yoke to the frame and handle. 9. The racket according to claim 8 wherein said yoke includes at least one closed cavity partly filled with freely movable granules. 10. The racket according to claim 1 wherein said handle terminates at its free end in an elongate grip portion, said grip portion including a hollow space at least partly filled with granules. Other info: Inventors: Kuebler, Siegfried (Uberlingen, DE, US) Application Number: 725363 Filing Date: 1976-09-22 Publication_date: 1980-01-08 Assignee: Kuebler & Co. (Singen, DE) Primary Class(es): 473/521 Other Classes: US Patent Ref:
Other Refs:
Primary Examiner: Apley, Richard J. Assistant Examiner: Attorney: Hane, Roberts, Spiecens & Cohen |
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