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US 8,272,977 B2Granted
Golf spin detector
AssigneeNIKE, Inc.
InventorAndrew G. V. Oldknow
Life of this patent
Estimating the term…
Abstract
A golf ball includes an inner layer, an outer layer, and a cavity therebetween. A pigment is placed in the cavity. When the ball is struck, the pigment moves from a consolidated position to a dispersed position adjacent the outer layer. An observation of the dispersed pigment informs the golfer of the spin imparted to the ball.
Claims18
An outer composite layer of a golf ball, comprising:
- an outer layer, wherein the outer layer is translucent;
- an inner layer;
- a cavity between the inner layer and the outer layer;
- and
- a first pigment and a fluid between the outer layer and the inner layer, wherein particles of the first pigment are capable of moving in the cavity;
- wherein the first pigment has a greater density than the fluid in the cavity;
- and
- wherein the outer composite layer is positioned radially outward of a golf ball core.
5 more elements
A golf ball, comprising:
- a core, the outer surface of the core comprising an inner layer;
- a cover radially outward of the core, comprising an outer layer;
- a cavity defined between the core and the cover;
- a pigment capable of moving within the cavity;
- and
- a fluid in the cavity, wherein the fluid has a first density and the pigment has a second density, and wherein the first density is less than the second density.
3 more elements
Dependencies are inferred from the claim text.