US 2014/0274495 A1 · TENNIS RACKET

Abstract

A tennis racket may include a handle with a butt end, and a head configured to support strings. The tennis racket may also include a throat connecting the handle and the head, wherein the racket may have a Power Maneuverability Ratio from about 4500 to about 7915, the Power Maneuverability Ratio governed by the equation: P   M   R = ( SW )  ( RW ) ( PUW ) , where SW=the moment of inertia in kilogram-centimeters squared of the tennis racket about a swingweight axis that is perpendicular to a longitudinal axis of the tennis racket, parallel to a tennis ball hitting surface contained by the head, and intersecting a point on the handle that is four inches from the butt end along the longitudinal axis, RW = RW - ( Wt 1000 )  ( b 10 - 10.16 ) 2 , Wt=the weight of the racket in grams, b=the distance in millimeters between a center of gravity of the racket to the butt end.

Claims21

Dependent claims

A tennis racket, comprising:

a handle with a butt end;
a head configured to support strings;
and
a throat connecting the handle and the head;
wherein the racket has a Power Maneuverability Ratio greater than about 4500, the Power Maneuverability Ratio governed by the equation:
PMR
=
(
SW
)

(
RW
)
(
PUW
)
,
where SW=the moment of inertia in kilogram-centimeters squared of the tennis racket about a swingweight axis that is perpendicular to a longitudinal axis of the tennis racket, parallel to a tennis ball hitting surface contained by the head, and intersecting a point on the handle that is four inches from the butt end along the longitudinal axis,
RW
=
SW
-
(
Wt
1000
)

(
b
10
-
10.16
)
2
,
Wt=the weight of the racket in grams, b=the distance in millimeters between a center of gravity of the racket to the butt end, TW=the moment of inertia of the tennis racket about the longitudinal axis, and PUW=(Wt)(b).

34 more elements

Dependencies are inferred from the claim text.

Tennis racket

Life of this patent

Tennis racket

Life of this patent

Abstract

Claims21