US4884814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf ball
Assignee: Spalding and Evenflo Companies Inc
•
Filing: 1988-01-15
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Granted: 1989-12-05
•
Expires: 2008-01-15
Abstract
Abstract The subject invention relates to golf ball technology, and more particularly, golf ball cover technology. The invention is concerned with a particular mixture of ionic resins as a golf ball cover composition. Ionomers have been widely used as golf ball cover materials for the past 15 years. While these ionomers are very durable, they have a deficiency as a golf ball cover material in that they tend to be hard. This invention is concerned with a mixture of a hard ionomer with a soft ionomer in order to produce a golf ball cover composition wherein the cover is softer than the prior art ionomer covers. A golf ball covered in accordance with this invention is durable and a skilled golfer can impart back spin to the ball in play.
Inventors
- 👤 Michael J. Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:24
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/12; C; C08; C08L; C08L33/00; C08L33/02; A63B37/0003; A63B37/0023; A63B37/0024; A63B37/0029; A63B37/003; A63B37/0031; A63B37/0037; A63B37/007; A63B37/0072; A63B37/0074; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0869; C08L23/0876; C09; C09D; C09D123/00; C09D123/02; C09D123/04; C09D123/08; C08L2205/00; C08L2205/02; C08L2205/03; C08L2205/035; Y; Y10; Y10S; Y10S524/00; Y10S524/908
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
144 words
A golf ball comprising a core and a cover, wherein said cover comprises from about 25 to about 75 percent of a hard ionomer which is a sodium or zinc salt of the copolymer of an olefin having from 2 to 8 carbon atoms and an unsaturated monocarboxylic acid having from 3 to 8 carbon atoms, wherein said hard ionomer has a modulus of from about 30,000 to about 50,000 P.S.I. and from about 75 to about 25 percent of a soft ionomer which is a sodium or zinc salt of a terpolumer of an olefin having from 2 to 8 carbon atoms, an unsaturated monocarboxylic acid having from 3 to 8 carbon atoms, and an unsaturated monomer of the acrylate ester class having from 2 to 22 carbon atoms, wherein said soft ionomer has a modulus of from about 3,000 to 7,000 P.S.I.
Claim 2
Dependent Claim
144 words
A golf ball comprising a core and a cover, wherein said cover comprises from about 25 to about 75 percent of a hard ionomer which is a sodium or zinc salt of the copolymer of an olefin having from 2 to 8 carbon atoms and an unsaturated monocarboxylic acid having from 3 to 8 carbon atoms, wherein said hard ionomer has a modulus of from about 30,000 to about 50,000 P.S.I. and from about 75 to about 25 percent of a soft ionomer which is a sodium or zinc salt of a terpolumer of an olefin having from 2 to 8 carbon atoms, an unsaturated monocarboxylic acid having from 3 to 8 carbon atoms, and an unsaturated monomer of the acrylate ester class having from 2 to 22 carbon atoms, wherein said soft ionomer has a modulus of from about 3,000 to 7,000 P.S.I.
Claim 3
Dependent Claim
44 words
The golf ball of claim 1 wherein the hard ionomer is a sodium or zinc salt of the copolymer of ethylene and methacrylic acid and the soft ionomer is a sodium salt of a terpolymer of ethylene, methacrylic acid and n- or iso-butyl acrylate.
Claim 4
Dependent Claim
33 words
The golf ball of claim 2 wherein said cover comprises from about 35 to about 65 percent of the hard ionomer and from about 65 to about 35 percent of the soft ionomer.
Claim 5
Dependent Claim
32 words
The golf ball of claim 2 wherein said cover comprises about 38 to about 62 percent of the hard ionomer and from about 62 to about 38 percent of the soft ionomer.
Claim 6
Dependent Claim
25 words
The golf ball of claim 2 wherein said cover comprises about 36.8 percent of the hard ionomer and about 59.9 percent of the soft ionomer.
Claim 7
Dependent Claim
25 words
The golf ball of claim 2 wherein said cover comprises about 59.0 percent of the hard ionomer and about 38.7 percent of the soft ionomer.
Claim 8
Dependent Claim
18 words
The golf ball of claim 2 wherein said cover composition incorporates an effective amount of a suitable pigment.
Claim 9
Dependent Claim
18 words
The golf ball of claim 3 wherein said cover composition incorporates an effective amount of a suitable pigment.
Claim 10
Dependent Claim
18 words
The golf ball of claim 4 wherein said cover composition incorporates an effective amount of a suitable pigment.
Claim 11
Dependent Claim
18 words
The golf ball of claim 5 wherein said cover composition incorporates an effective amount of a suitable pigment.
Claim 12
Dependent Claim
18 words
The golf ball of claim 6 wherein said cover composition incorporates an effective amount of a suitable pigment.
Claim 13
Dependent Claim
22 words
The golf ball of claim 2 wherein said cover composition incorporates from about 1 to about 10 percent of a suitable pigment.
Claim 14
Dependent Claim
22 words
The golf ball of claim 3 wherein said cover composition incorporates from about 1 to about 10 percent of a suitable pigment.
Claim 15
Dependent Claim
22 words
The golf ball of claim 4 wherein said cover composition incorporates from about 1 to about 10 percent of a suitable pigment.
Claim 16
Dependent Claim
22 words
The golf ball of claim 5 wherein said cover composition incorporates from about 1 to about 10 percent of a suitable pigment.
Claim 17
Dependent Claim
22 words
The golf ball of claim 6 wherein said cover composition incorporates from about 1 to about 10 percent of a suitable pigment.
Claim 18
Dependent Claim
39 words
The golf ball of claim 2 wherein said cover composition incorporates from about 1 to about 5 percent of a pigment which is a member selected from the group of titanium dioxide, barium sulfate, zinc oxide or zinc sulfate.
Claim 19
Dependent Claim
39 words
The golf ball of claim 3 wherein said cover composition incorporates from about 1 to about 5 percent of a pigment which is a member selected from the group of titanium dioxide, barium sulfate, zinc oxide or zinc sulfate.
Claim 20
Dependent Claim
39 words
The golf ball of claim 4 wherein said cover composition incorporates from about 1 to about 5 percent of a pigment which is a member selected from the group of titanium dioxide, barium sulfate, zinc oxide or zinc sulfate.
Claim 21
Dependent Claim
39 words
The golf ball of claim 5 wherein said cover composition incorporates from about 1 to about 5 percent of a pigment which is a member selected from the group of titanium dioxide, barium sulfate, zinc oxide or zinc sulfate.
Claim 22
Dependent Claim
39 words
The golf ball of claim 7 wherein said cover composition incorporates from about 1 to about 5 percent of a pigment which is a member selected from the group of titanium dioxide, barium sulfate, zinc oxide or zinc sulfate.
Claim 23
Dependent Claim
39 words
The golf ball of claim 2 wherein said cover composition incorporates from about 1 to about 3 percent of a pigment which is a member selected from the group of titanium dioxide, barium sulfate, zinc oxide or zinc sulfate.
Claim 24
Dependent Claim
39 words
The golf ball of claim 3 wherein said cover composition incorporates from about 1 to about 3 percent of a pigment which is a member selected from the group of titanium dioxide, barium sulfate, zinc oxide or zinc sulfate.
Claim 25
Dependent Claim
39 words
The golf ball of claim 4 wherein said cover composition incorporates from about 1 to about 3 percent of a pigment which is a member selected from the group of titanium dioxide, barium sulfate, zinc oxide or zinc sulfate.
Claim 26
Dependent Claim
39 words
The golf ball of claim 5 wherein said cover composition incorporates from about 1 to about 3 percent of a pigment which is a member selected from the group of titanium dioxide, barium sulfate, zinc oxide or zinc sulfate.
Claim 27
Dependent Claim
39 words
The golf ball of claim 6 wherein said cover composition incorporates from about 1 to about 3 percent of a pigment which is a member selected from the group of titanium dioxide, barium sulfate, zinc oxide or zinc sulfate.
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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) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |