Patent US3261646A successfully refreshed from Google Patents.
US3261646A
Expired / Lapsed
US
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Tread surfaces on elastomer bodies
Assignee: DS Brown Co
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Filing: 1964-06-19
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Granted: 1966-07-19
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Expires: 1984-06-19
Abstract
No abstract record available.
Inventors
- 👤 James H Pax
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:44
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/12; B29D35/122; A; A43; A43B; A43B13/00; A43B13/14; A43B13/22; A43B13/24; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/26; B62D55/275; B29K; B29K2021/00; B60; B60C; B60C11/00; B60C11/0008; B60C2011/0016
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
A TREAD MEMBER COMPRISING A PLATE, A SHANK PROJECTING OUTWARDLY FROM ONE FACE OF SAID PLATE, AN ELASTOMER BODY MOLDED ABOUT SAID PLATE WITH A THICK LAYER OF SAID BODY COVERING THE OPPOSITE FACE OF SAID PLATE, SAID LAYER BEING A RELATIVELY SOFT, FLEXIBLE, POLYURETHANE ELASTOMER HAVING A DUROMETER HARDNESS IN THE RANGE OF ABOUT 50 TO 95 SHORE A, THE OUTER SURFACE OF WHICH IS THE TREAD SURFACE OF SAID TREAD MEMBER, SAID TREAD SURFACE HAVING A PLURALITY OF GROOVES THEREIN, AND STRIPS OF A HARD POLYURETHANE ELASTOMER HAVING A DUROMETER HARDNESS OF 45 TO 85 SHORE D SECURED IN SAID GROOVES AND FORMING A PART OF SAID TREAD SURFACE.
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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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |