Racquetball racquet having increased stiffness at tip

Details Racquetball racquet having increased stiffness at tip Racquetball racquet having increased stiffness at tip

1994-06-28

1995-11-28

Chiu, Raleigh W.

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

273 73R, 273 73G, A63B 4902

Patent

active

054700612

ABSTRACT:
Racquetball racquet having a frame forming a head and a handle characterized by a side profile comprising two intersecting arcs having different radii of curvature and intersecting at a point of intersection which is in the region of but above the throat of the racquet. These two arcs define two oppositely tapered frame segments. The first frame segment extends from the tip of the racquet, where the frame height is at a maximum, to the point of intersection, where the frame height is at a minimum. The second frame segment extends from the handle, at or below the throat, to the point of intersection. The arc defining the first segment is of much larger radius of curvature than the arc defining the second segment. This affords a maximum frame cross-sectional area at the tip and a smaller frame cross-sectional area in a flex zone which includes the point of intersection. The resulting racquet has a greater stiffness moment at the tip and a smaller stiffness in the flex zone which may afford more power and greater control.

REFERENCES:
patent: D260415 (1981-08-01), Erwin et al.
patent: 3999746 (1976-12-01), Head
patent: 4265450 (1981-05-01), Drake et al.
patent: 4280699 (1981-07-01), Drake
patent: 4531738 (1985-07-01), Mortvedt et al.
patent: 5076583 (1991-12-01), Hsu
patent: 5183265 (1993-02-01), Umlauft et al.
patent: 5342045 (1994-08-01), Feeney
Total Racquetball.TM.:Racquetball in the RTS.TM. Era (56 pages: published by Ektelon, San Diego, CA; undated), pp. 1-26 and 56.

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