Games using tangible projectile – Player held and powered – nonmechanical projector – per se,... – Racket or paddle; accessory therefor
Patent
1997-03-17
1998-04-28
Stoll, William E.
Games using tangible projectile
Player held and powered, nonmechanical projector, per se,...
Racket or paddle; accessory therefor
A63B 5106
Patent
active
057438226
ABSTRACT:
A tennis racquet for employment during the game of tennis by enhancing a player's ability to produce spin and drop shots which includes a holeless oval frame head having front and back faces provided with spaced-apart grooves and having a continuous side groove about the outside side of the frame. The outside peripheral edge further includes connecting grooves or slots that join the terminating ends of the front and back face grooves. The face grooves, the side connected grooves or slots and the edge groove define a series of projections about which a racquet string is trained so as to crisscross over the central opening of the oval frame. The grooves and slots are of sufficient depth to support the string so as to appear above the surfaces of the frame. The projections defining the continuous edge groove include an arcuate channel mateable with the curvature of the string as the string bears against the projection. Therefore, a double stringed tennis racquet is provided so that the tennis ball will engage with only the string element and not the frame itself.
REFERENCES:
patent: 3904202 (1975-09-01), De Lorean
patent: 3968966 (1976-07-01), D'Aquanni
patent: 4049269 (1977-09-01), Blackburne
patent: 4204680 (1980-05-01), Blackburne
patent: 4320900 (1982-03-01), Blackburne
patent: 5423532 (1995-06-01), Huang
patent: 5443575 (1995-08-01), Huang
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