Anti-slice golf ball construction
AssigneeAero-X Golf Inc.
InventorsDavid L. Felker, Douglas C. Winfield
Life of this patent
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Abstract
A golf ball has a cover and a core which is made as a single piece or of two or more parts (for example an inner core covered by an outer core or mantle layer). The ball has non-spherical aspects in at least some parts and may also have different specific gravities in different parts of the ball. The different shaped ball parts combined with the different specific gravities of the materials for different ball parts results in a differential between the moments of inertia of the different spin axes. The golf ball is spherical, but the inner layers are not necessarily completely spherical or symmetrical layers or parts.
Claims63
A multi-piece golf ball, comprising:
- a core comprising at least one piece;
- a cover layer surrounding the core and comprising at least one piece;
- at least one piece of the ball having an at least partially non-spherical first surface which faces outwards;
- a second piece of the ball directly surrounding said first surface having an inwardly facing, second surface of complementary, at least partially non-spherical shape opposing said first surface;
- said at least one piece of the ball having a higher specific gravity than at least one other piece;
- the ball having first, second and third orthogonal axes;
- and
- the core and cover layer are configured such that the ball has a first moment of inertia (MOI) with respect to the first orthogonal axis which is higher than the MOI with respect to the second and third orthogonal axis.
The golf ball of claim 41, wherein the core comprises an inner core and an outer core layer, the outer core layer has an inner surface comprising a third surface of at least partially non-spherical shape and the opposing outer surface of the inner core comprises a matching fourth surface of partially non-spherical shape.
A multi-piece golf ball, comprising:
- a plurality of pieces configured to form a golf ball and comprising an inner core and at least two additional layers surrounding the inner core;
- the additional layers comprising at least a mantle layer surrounding the inner core and an outer cover surrounding the mantle layer, the outer cover layer having an outer surface having a plurality of features configured to provide selected aerodynamic properties to the ball;
- the pieces each having a specific gravity, the specific gravity of one piece being higher than the other two pieces;
- the mantle layer having an at least partially non-spherical outer surface, an opposing inner surface of the outer cover layer being of complementary, at least partially non-spherical shape;
- and
- the opposing surfaces of the mantle and cover layer being configured such that the moment of inertia (MOI) of the assembled golf ball measured about three orthogonal axes is different for at least one of the axes.
Dependencies are inferred from the claim text.