Back to results
US 8,128,523 B2Granted
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;
- and
- wherein the middle portion comprises a plurality of weighted strips surrounding a bladder, the weighted strips being located between the bladder and a casing.
1 more element
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;
- wherein the weight of the middle portion is at least 1.5 times greater than the weight of one end portion;
- and
- wherein the middle portion comprises a plurality of weighted strips surrounding a bladder, the weighted strips being located between the bladder and a casing.
2 more elements
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;
- wherein the weight of the middle portion is at least 45% of the total weight of the football;
- and
- wherein the middle portion comprises a plurality of weighted strips surrounding a bladder, the weighted strips being located between the bladder and a casing.
2 more elements
Dependencies are inferred from the claim text.