US3130102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making golf balls with covers of polyurethane
Assignee: Dunlop Rubber Co Ltd
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Filing: 1961-05-17
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Granted: 1964-04-21
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Expires: 1981-05-17
Abstract
No abstract record available.
Inventors
- 👤 Watson John William
- 👤 Ford Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:33
CPC Classifications
B; B29; B29C; B29C43/00; B29D; B29D99/00; B29D99/0042; B29C35/00; B29C35/02; B29C35/0227; B29K; B29K2105/00; B29K2105/06; B29K2105/20; B29L; B29L2031/00; B29L2031/54; B29L2031/545; Y; Y10; Y10S; Y10S273/00; Y10S273/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS FOR THE MANUFACTURE OF CORED BALLS WHICH COMPRISES THE STEPS OF MOULDING AND PARTIALLY CURING A CURABLE POLYURETHANE PRE-POLYMER IN AN UNPATTERNED HALFSHELF MOULD AT A TEMPERATURE FROM ABOUT ROOM TEMPERATURE TO BOUT 105*C., INTERRUPTING THE CURING OF THE POLYURETHANE PRE-POLYMER IN THE MOULD BY COOLING THE HALFSHELL TO A TEMPERATURE BELOW 0*C., POSITIONING A MOULDED HALF-SHELL ON EITHER SIDE OF A PREVIOUSLY PREPARED CORE IN A MOULD SO THAT THE EDGES OF THE HALF-SHELLS LIE PARALLEL TO THE EDGES OF THE MOULD AND ADVANCINGTHE CURE OF THE POLYURETHANE TO A NON-THERMOPLASTIC STATE SO THAT THE ABUTTING EDGES OF THE HALF-SHELLS ARE FUSED TOGETHER.
Claim 2
Dependent Claim
106 words
A PROCESS FOR THE MANUFACTURE OF CORED BALLS WHICH COMPRISES THE STEPS OF MOULDING AND PARTIALLY CURING A CURABLE POLYURETHANE PRE-POLYMER IN AN UNPATTERNED HALFSHELF MOULD AT A TEMPERATURE FROM ABOUT ROOM TEMPERATURE TO BOUT 105*C., INTERRUPTING THE CURING OF THE POLYURETHANE PRE-POLYMER IN THE MOULD BY COOLING THE HALFSHELL TO A TEMPERATURE BELOW 0*C., POSITIONING A MOULDED HALF-SHELL ON EITHER SIDE OF A PREVIOUSLY PREPARED CORE IN A MOULD SO THAT THE EDGES OF THE HALF-SHELLS LIE PARALLEL TO THE EDGES OF THE MOULD AND ADVANCINGTHE CURE OF THE POLYURETHANE TO A NON-THERMOPLASTIC STATE SO THAT THE ABUTTING EDGES OF THE HALF-SHELLS ARE FUSED TOGETHER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |