Patent US3907018A successfully refreshed from Google Patents.
US3907018A
Expired / Lapsed
US
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Tire filled with foamed material
Assignee: Bridgestone Corp
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Filing: 1973-12-06
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Granted: 1975-09-23
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Expires: 1993-12-06
Abstract
Abstract A tire having a tire chamber filled with foamed substance and a blocking ring extending across and integrally secured to bead portions of the tire so as to bear expansive force from the foamed substance, so that the tire is replaceable relative to a separate metallic rim.
Inventors
- 👤 Akira Fujikawa
- 👤 Takashi Hoshino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:31
CPC Classifications
B; B60; B60C; B60C7/00; B60C7/10; B60C7/101; B60C7/1015; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10279; Y10T152/10378; Y10T152/10387; Y10T152/10396; Y10T152/10414
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A PROCESS FOR MAKING A REMOVABLE, FOAM FILLED TIRE FOR HEAVY VEHICLES COMPRISING THE STEPS OF: A. INSERTING A PLURALITY OF ANNULAR SEGMENTS OF FOAMABLE MATERIAL CONTAINING A FOAMING AGENT INTO A TIRE CHAMBER, B. PLACING A FIRST HARD RUBBER ANNULAR SEGMENT BETWEEN THE BEAD PORTIONS OF THE TIRE, SAID FIRST HARD RUBBER PORTION HAVING AT LEAST ONE GROOVE ON ITS RADILLY INNER SURFACE, C. INSERTING A REINFORCING MEMBER IN SAID GROOVE, D. PLACING A SECOND HARD RUBBER ANNULAR SEGMENT ON SAID RADIALLY INNER SURFACE, AND E. VULCANIZING THE TIRE ASSEMBLY SO AS TO CAUSE SAID FOAMABLE MATERIAL TO FOAM, AND TO CAUSE SAID FIRST AND SECOND HARD RUBBER ANNULAR SEGMENTS TO BOND THE TIRE BEAD PORTIONS TO THEREBY PREVENT ESCAPE OF THE FOAMED MATERIAL.
Claim 2
Dependent Claim
20 words
The process of claim 1 wherein said first hard rubber annular segment is adhesively bonded to said tire bead portions.
References Cited (Backward Citations)
US1140752A
Cited
US1106113A
Cited
US2399572A
Cited
US3022810A
Cited
US3095917A
Cited
US3331423A
Cited
US3381735A
Cited
US3605848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |