Abstract An improved game racket is provided which includes a plurality of longitudinal and transverse strings disposed in parallel planes, and a unitary grid including a plurality of longitudinally-disposed first members disposed on a plurality of the longitudinal strings, and a plurality of transversely-disposed second members disposed on a plurality of the transverse strings so that the second members of the grid cross the first members thereof. The first and second grid members are bonded together at a plurality of crossing points so that the grid moves substantially as a unit with either the longitudinal or transverse strings of the grid when struck by a ball to increase the amount of top spin, back spin, or side spin imparted to the ball. In alternative embodiments, the grid includes either a plurality of longitudinally or transversely-disposed third members to provide an identical playing surface on either side of the racket. In addition, in the preferred embodiment, the grid members are provided with protuberances or roughened surfaces so as to increase the frictional engagement and the time span during which the grid members contact the ball to increase the spin imparted thereto. Also, the amount of spin imparted to the ball may be adjusted by varying the amount of tension on the longitudinal and transverse strings. Finally, the grid members may be in the form of elongated tubes or in the form of elongated guides or trackways.
Inventors
👤 Harlan D. Amster
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-27 15:45
CPC Classifications
A; A63; A63B; A63B51/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
264 words
A game racket, comprising: a frame including a handle, a plurality of longitudinally-disposed strings connected to said frame and disposed in a first plane, a plurality of transversely-disposed strings connected to said frame and disposed in a second plane to define a playing area, said second plane being substantially parallel to said first plane in at least the central area of said frame, and a grid in said central area including a plurality of longitudinally-disposed first members each slidably disposed on separate ones of less than all of said plurality of longitudinally-disposed strings, said grid further including a plurality of transversely-disposed second members each slidably disposed on separate ones of less than all of said plurality of transversely-disposed strings so that said second members cross said first members, said first and second grid members being connected at a plurality of crossing points so that said grid moves substantially as a unit, and so that said grid and said less than all of said plurality of longitudinally-disposed strings move as a unit and slide relative to said transversely-disposed strings when struck by a ball in one direction to increase the amount of top spin or back spin imparted to said ball, and so that said grid and said less than all of said plurality of transversely-disposed strings move as a unit and slide relative to said longitudinally-disposed strings when struck by a ball in another direction to increase the amount of side spin imparted to said ball, and wherein the space between said grid and said frame includes transversely-disposed strings interwoven with said longitudinally-disposed strings.
Claim 2
Dependent Claim
264 words
A game racket, comprising: a frame including a handle, a plurality of longitudinally-disposed strings connected to said frame and disposed in a first plane, a plurality of transversely-disposed strings connected to said frame and disposed in a second plane to define a playing area, said second plane being substantially parallel to said first plane in at least the central area of said frame, and a grid in said central area including a plurality of longitudinally-disposed first members each slidably disposed on separate ones of less than all of said plurality of longitudinally-disposed strings, said grid further including a plurality of transversely-disposed second members each slidably disposed on separate ones of less than all of said plurality of transversely-disposed strings so that said second members cross said first members, said first and second grid members being connected at a plurality of crossing points so that said grid moves substantially as a unit, and so that said grid and said less than all of said plurality of longitudinally-disposed strings move as a unit and slide relative to said transversely-disposed strings when struck by a ball in one direction to increase the amount of top spin or back spin imparted to said ball, and so that said grid and said less than all of said plurality of transversely-disposed strings move as a unit and slide relative to said longitudinally-disposed strings when struck by a ball in another direction to increase the amount of side spin imparted to said ball, and wherein the space between said grid and said frame includes transversely-disposed strings interwoven with said longitudinally-disposed strings.
Claim 3
Dependent Claim
31 words
A game racket in accordance with claim 1 wherein the space between said grid and said frame includes transversely-disposed strings interwoven with said longitudinally-disposed strings on all sides of said grid.