Patent US3047450A successfully refreshed from Google Patents.
US3047450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of pneumatic tyres
Assignee: Dunlop Rubber Co Ltd
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Filing: 1959-09-01
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Granted: 1962-07-31
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Expires: 1979-09-01
Abstract
No abstract record available.
Inventors
- 👤 Drakeford George Edward
- 👤 Manning Raymond Norgrove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:30
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
METHOD OF SHAPING A PNEUMATIC TYRE CARCASS COMPRISING THE STEPS OF CONTRACTING IT AXIALLY AND APPLYING TO IT A RADIALLY OUTWARD EXPANDING FORCE WHILST RESTRAINING IT AT CIRCUMFERENTIAL ZONES SPACED SYMMETRICALLY FROM A PLANE TRANSVERSE TO ITS AXIS AND MIDWAY BETWEEN ITS BEADS TO PERMIT INITIALLY ONLY ITS CENTRAL REGION TO EXPAND RADIALLY OUTWARDLY, AND VARYING THE RESTRAINT AS EXPANSION PROCEEDS
Claim 2
Dependent Claim
61 words
METHOD OF SHAPING A PNEUMATIC TYRE CARCASS COMPRISING THE STEPS OF CONTRACTING IT AXIALLY AND APPLYING TO IT A RADIALLY OUTWARD EXPANDING FORCE WHILST RESTRAINING IT AT CIRCUMFERENTIAL ZONES SPACED SYMMETRICALLY FROM A PLANE TRANSVERSE TO ITS AXIS AND MIDWAY BETWEEN ITS BEADS TO PERMIT INITIALLY ONLY ITS CENTRAL REGION TO EXPAND RADIALLY OUTWARDLY, AND VARYING THE RESTRAINT AS EXPANSION PROCEEDS
References Cited (Backward Citations)
US1525455A
Cited
US1625122A
Cited
FR598692A
Cited
US2542871A
Cited
US2591934A
Cited
US2699198A
Cited
US2814331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |