Golf ball
AssigneeTaylor Made Golf Company, Inc.
InventorsDana Ehyaei, Todd Beach, Ben Raymond, David Anderson
Life of this patent
Estimating the term…
Abstract
A golf ball having a North pole and a South pole, an equator and a primary meridian, the equator and primary meridian divide the ball into North, South, East and West hemispheres, and Northeast, Northwest, Southeast and Southwest quadrants. A grid pattern projected on the ball surface divides the ball laterally and longitudinally into a number of overlapping zones. The dimples within the zones have average depths hex, hsx, hpx, hei, hsi and hpi and selected values of Δe, Δs and Δp which are the difference between the minimum and maximum values of the relative ratios of the dimple depths, hexr/heir, hsxr/hsir and hpxr/hpir determined when the ball is rotated by a value of θ from 0 to 360° about its polar axis.
Claims6
A golf ball having an outer surface with a number of dimples thereon and having a north pole and a south pole, an equator and a primary meridian, the equator and primary meridian serving to divide the ball into north, south, east and west hemispheres, and a northeast, northwest, southeast and southwest quadrant;
- and wherein a grid pattern on the ball surface forms a number of overlapping zones, said zones comprising;
- A) an equatorial zone, E×N, in the northern hemisphere between the equator at f=90° and a line formed by a plane parallel to the equator at f=65°;
- B) a shoulder zone, S×N, in the northern hemisphere between the line formed by a plane parallel to the equator at f=65° and the line formed by a plane parallel to the equator at f=25°;
- C) a polar zone, P×N, in the northern hemisphere formed by a plane parallel to the equator at f=25°;
- D) a region, NEiE, in the northeast quadrant defined as collectively two regions, the first between the primary meridian arc at q=0° and the great circle arc at q=25° and the second between the great circle arc at q=155° and the great circle arc at q=180°;
- E) a region, NSiE, in the northeast quadrant defined as collectively two regions, the first between the great circle arc at q=25° and the great circle arc at q=65° and the second between the great circle arc at q=115° and the great circle arc at q=155°;
- and
- F) a region, NPiE, in the northeast quadrant defined as the region between the great circle arc at q=65° and the great circle arc at q=115°;
- and wherein;
- G) an average depth of the dimples in each of the E×N, S×N, P×N, NEiE, NSiE and NPiE zones in the northeast quadrant is defined as hex, hsx, hpx, hei, hsi and hpi respectively;
- and wherein
- a) the golf ball has a total number from 275 to 475 reduced equivalent depth dimples on its surface;
- wherein
- i) from 5 to 9% of the total number of reduced equivalent depth dimples lie in the NEiE region, from 5 to 10.6% of the total number of reduced equivalent depth dimples lie in the NSiE region, and from 5 to 7.1% of the total number of reduced equivalent depth dimples lie in the NPiE region;
- ii) from 5 to 9.6% of the total number of reduced equivalent depth dimples lie in the E×N zone in the northeastern quadrant;
- iii) from 10 to 14% of the total number of reduced equivalent depth dimples lie in the S×N zone in the northeastern quadrant;
- and
- iv) from 1 to 3.1% of the total number of reduced equivalent depth dimples lie in the P×N zone in the northeastern quadrant;
- and
- b) the golf ball has greater than or equal to 3 different dimple diameters each of which are from 1.0 to 6.5 mm;
- c) a depth of the reduced equivalent depth dimples are each from 0.06 to 0.200 mm;
- d) the average depth of the dimples in each zone in the northeastern quadrant, hex, hsx, hpx, hei, hsi and hpi are each from 0.060 to 0.200 mm;
- e) the depth ratio in the northeastern quadrant hex/hei, hsx/hsi, and hpx/hpi are each all greater than or equal to 0.75 and less than or equal to 1.20;
- and
- f) a total dimple volume, TDV, is from 380 to 500 mm3.
Dependencies are inferred from the claim text.