Patent US3609889A successfully refreshed from Google Patents.
US3609889A
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US
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Spiked golf sole
Assignee: Bearfoot Corp
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Filing: 1969-07-14
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Granted: 1971-10-05
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Expires: 1989-07-14
Abstract
Abstract AN ELASTOMERIC GOLF SHOE HAVING FRUSTO-CONICAL SPIKES OF TITANIUM-COATED ALUMINUM OXIDE WITH THEIR BASES MOLDED INTO THE SOLE AND THEIR TAPERED END PORTIONS PORJECTING THEREFROM, THE SOLE SURFACE AREAS SURROUNDING SAID PROJECTING PORTIONS BEING RELIEVED SO AS TO TRANSFER FLEXING CAUSED BY FORCES APPLIED TO SAID PROPJECTING PORTIONS RADIALLY OUTWARD THEREOF, SAID SPIKES BEING BONDED TO SAID ELASTOMERIC MATERIAL BY A COMBINATION OF COMPATIBLE CEMENTS WHICH WHEN SUBJECTED TO MOLDING HEAT MAKE A PERMANENT BOND BETWEEN THE TITANIUM COATING OF THE SPIKES AND THE ELASTOMERIC MATERIAL.
Inventors
- 👤 Timothy D Calvin
- 👤 Edward Gulbis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:49
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/12; B29D35/122; A; A43; A43B; A43B5/00; A43B5/001; A43C; A43C15/00; A43C15/16; A43C15/161
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |