US4229401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making golf balls
Assignee: Colgate Palmolive Co
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Filing: 1979-05-29
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Granted: 1980-10-21
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Expires: 1999-05-29
Abstract
Abstract A method of making golf balls wherein an elastomeric spherical core is formed with a series of narrow shallow surface channels each lying on great circles passing through opposite pole areas, and similar hemispherical cover shells are compression molded upon the core and joined along a transverse seam lying in a plane that intersects all of the great circles, preferably at about 90°.
Inventors
- 👤 Terence W. Pocklington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:39
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/68; B29C70/70; A; A63; A63B; A63B37/00; A63B37/0003; A63B37/007; A63B37/0077; A63B37/0097; B29C37/00; B29C37/0078; B29C37/0082; B29D; B29D99/00; B29D99/0042; B29C43/00; B29L; B29L2031/00; B29L2031/54; Y; Y10; Y10S; Y10S425/00; Y10S425/812
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
87 words
A method of making a golf ball comprising the steps of providing a preformed homogeneous spherical core of elastomeric material having a multiplicity of relatively shallow surface channels all lying on the paths of great circles passing through opposite poles on said core surface and compression molding preformed hemispherical cover shells of thermoplastic or thermoformable material upon and about said core under heat and pressure, said shells being substantially centered with said poles as they are brought together to integrally weld around a generally transverse equatorial seam.
Claim 2
Independent Claim
87 words
A method of making a golf ball comprising the steps of providing a preformed homogeneous spherical core of elastomeric material having a multiplicity of relatively shallow surface channels all lying on the paths of great circles passing through opposite poles on said core surface and compression molding preformed hemispherical cover shells of thermoplastic or thermoformable material upon and about said core under heat and pressure, said shells being substantially centered with said poles as they are brought together to integrally weld around a generally transverse equatorial seam.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein said seam lies in a plane that intersects the planes of said great circles at an angle between 45° and 135°.
Claim 4
Dependent Claim
20 words
The method defined in claim 2 wherein the plane of the seam intersects each great circle plane at about 90°.
Claim 5
Dependent Claim
32 words
The method defined in claim 1 wherein the cover material deforms under heat and pressure to fill said channels progressively from the poles toward the equatorial region where the shells are joined.
Claim 6
Dependent Claim
27 words
The method defined in claim 1 wherein during the compression molding operation said shells move together in a direction parallel to a vertical plane through said poles.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |