American-style football having a reduced MOI
An American-style football may include a prolate spheroidal shaped bladder having a longitudinal axis, an outermost layer about the bladder, a lacing surface featuring a series of parallel projections from an exterior of the outermost layer and an intermediate sandwiched between the bladder and the outermost layer, wherein the intermediate layer is configured to decrease a MOI of the football.
1. An American-style football comprising:
a prolate spheroidal shaped bladder having a longitudinal axis;
an outermost layer about the bladder;
a lacing surface featuring a series of parallel projections from an exterior of the outermost layer; and
a non-uniform layer sandwiched between the bladder and the outermost layer, the non-uniform layer having non-uniform distribution of mass providing a greater mass proximate the longitudinal axis to decrease a MOI of the football, wherein the non-uniform layer has a first region distant the longitudinal axis having a first material composition having a first material density and a second region proximate the longitudinal axis having a second material composition, different than the first material composition and having a second material density greater than the first material density, wherein the second region is symmetric with respect to the longitudinal axis.
2. The American-style football of claim 1 , wherein the first region distant the longitudinal axis has a first density of the first material and the second region proximate the longitudinal axis has a second density of a second material greater than the first density of the first material.
3. The American-style football of claim 2 , wherein the first region has a first density of individual apertures of a size through the layer and wherein the second region has a second density of individual apertures of the size through the layer less than the first density of the apertures.
4. The American-style football claim 2 , wherein the first region comprises individual apertures of a first size through the layer and wherein the second region comprise individual apertures of a second size, smaller than the first size, through the layer.
5. The American-style football of claim 2 , wherein the first region has a first density of individual cells of a size through the layer and wherein the second region has a second density of individual cells of the size through the layer less than the first density of individual cells.
6. The American-style football of claim 2 , wherein the first region comprises individual cells of a first size through the layer and wherein the second region comprise individual cells of a second size, smaller than the first size, through the layer.
7. The American-style football of claim 1 , wherein the first region comprises foamed material and wherein the second region comprises solid material.
8. The American-style football of claim 1 , wherein the first material composition has a first strength and wherein the second material composition has a second strength less than the first strength.
9. The American-style football of claim 1 , wherein the first region distant the longitudinal axis has a first thickness and the second region proximate the longitudinal axis has a second thickness greater than the first thickness.
10. The American-style football of claim 1 , wherein the non-uniform layer comprises a woven, knitted or felted fabric, wherein the first region comprises first fibers having a first individual fiber density or having a first density of fibers and wherein the second region comprises second fibers having a second individual fiber density greater than the first individual fiber density or having a second density of fibers greater than the first density of fibers.
11. The American-style football of claim 1 , wherein the non-uniform layer forms a liner between the bladder and the outermost layer.
12. The American-style football of claim 1 , wherein the lacing surface comprises a lace passing through the outermost layer and forming the projections.
13. The American-style football of claim 1 , wherein the non-uniform layer has a first region proximate the lacing surface and a second region proximate the longitudinal axis, wherein the first region is different than the second region.
14. The American-style football of claim 13 , wherein the first region has a first material thickness and wherein the second region has a second material thickness greater than the first material thickness.
15. The American-style football of claim 1 , wherein the longitudinal axis intersects the second region.
16. The American-style football of claim 1 , wherein the second region continuously extends around the longitudinal axis.