Golf ball parting line configuration and mold
First Claim
Patent Images
1. A golf ball, comprising:
- two generally hemispherical portions joined together at a parting line and comprising dimples on respective outer surfaces thereof;
the parting line comprising a repeating pattern of curved segments alternating with straight segments, wherein the parting line crosses the geometric equator of the golf ball and wherein the curved segments of the parting line have their respective maxima points on a first side of the equator and the straight segments of the parting line are on a second side of the equator opposite the first side;
wherein the repeating pattern has a period of approximately 72°
, such that along one period from 0°
to 72°
the straight segments are progressively positioned farther from the equator and then progressively positioned closer to the equator, and the maxima points of the curved segments are progressively positioned closer to the equator and then progressively positioned farther from the equator;
wherein each period of the parting line includes exactly five curved segments and exactly five straight segments; and
wherein the parting line intersects at least one dimple bordering the equator.
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Abstract
A golf ball comprises two generally hemispherical portions joined together at a parting line and comprising dimples on respective outer surfaces thereof. The parting line comprises a repeating pattern of curved segments alternating with straight segments. The parting line crosses a geometric equator of the golf ball, and wherein the parting line intersects at least one dimple bordering the equator. A mold for producing a golf ball is also described.
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Citations
17 Claims
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1. A golf ball, comprising:
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two generally hemispherical portions joined together at a parting line and comprising dimples on respective outer surfaces thereof; the parting line comprising a repeating pattern of curved segments alternating with straight segments, wherein the parting line crosses the geometric equator of the golf ball and wherein the curved segments of the parting line have their respective maxima points on a first side of the equator and the straight segments of the parting line are on a second side of the equator opposite the first side; wherein the repeating pattern has a period of approximately 72°
, such that along one period from 0°
to 72°
the straight segments are progressively positioned farther from the equator and then progressively positioned closer to the equator, and the maxima points of the curved segments are progressively positioned closer to the equator and then progressively positioned farther from the equator;wherein each period of the parting line includes exactly five curved segments and exactly five straight segments; and wherein the parting line intersects at least one dimple bordering the equator. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A golf ball, comprising:
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two generally hemispherical portions joined together at a parting line and comprising dimples on respective outer surfaces thereof; the parting line being defined by a first function comprising a sine wave superposed with a second function to yield a repeating pattern of curved segments which have their respective maxima points on a first side of the equator and alternating with straight segments which are on a second side of the equator opposite the first side; wherein the sine wave has a period of approximately 72°
, such that along one period from 0°
to 72°
the straight segments are progressively positioned farther from the equator and then progressively positioned closer to the equator, and the maxima points of the curved segments are progressively positioned closer to the equator and then progressively positioned farther from the equator;wherein each period of the parting line includes exactly five curved segments and exactly five straight segments; and wherein the parting line extends about the golf ball, intersecting a bordering dimple and remaining spaced apart from other bordering dimples. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification