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US 2009/0286632 A1Published application
Sportsball with improved spiral rotation
AssigneesRussell Asset Management, Inc., SGG Patents LLC
InventorsRonald P. Laliberty, Michael W. Maziarz
Life of this patent
Estimating the term…
Abstract
A sportsball, such as a football, is preferentially constructed to enhance spiral rotation when thrown or kicked, allowing enhanced stability and distance.
Claims20
A sportsball having a major axis and a minor axis;
- wherein two planes which are perpendicular to the major axis are located equally distant from the center of the major axis so as to divide the sportsball into a middle portion and two end portions, the middle portion having a middle portion weight and a middle portion length, each end portion having an end portion weight and an end portion length;
- wherein the ratio of (middle portion weight/middle portion length) to (end portion weight/end portion length) is at least 2.
A sportsball having a major axis and a minor axis;
- wherein two planes which are perpendicular to the major axis are located equally distant from the center of the major axis so as to divide the sportsball into a middle portion and two end portions, the middle portion having a middle portion weight and a middle portion length, each end portion having an end portion weight and an end portion length;
- wherein the ratio of the middle portion length to one end portion length is from about 0.5 to about 0.95;
- and
- wherein the weight of the middle portion is at least 1.5 times greater than the weight of one end portion.
1 more element
A football having a major axis and a minor axis;
- wherein two planes which are perpendicular to the major axis are located equally distant from the center of the major axis so as to divide the football into a middle portion and two end portions, the middle portion having a middle portion weight and a middle portion length, each end portion having an end portion weight and an end portion length;
- wherein the ratio of the middle portion length to one end portion length is from about 0.5 to about 0.95;
- and
- wherein the weight of the middle portion is at least 45% of the total weight of the football.
1 more element
Dependencies are inferred from the claim text.