US2818902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing compound for tubeless tire
Assignee: Bridgestone Firestone Inc
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Filing: 1952-10-21
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Granted: 1958-01-07
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Expires: 1972-10-21
Abstract
No abstract record available.
Inventors
- 👤 Schutz Joseph Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:13
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; B; B29; B29C; B29C73/00; B29C73/16; B29C73/163; B29D; B29D30/00; B29D30/06; B29D30/0681; B29D30/0685; C08K3/24; C08K3/26; B29D2030/0686; B29D2030/0691; B29L; B29L2030/00; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10666; Y10T152/10675; Y10T152/10684; Y10T152/10702
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PNEUMATIC TIRE COMPRISED OF A RUBBERY TREAD PORTION, AN OPEN BELLIED FABRIC BODY PORTION TERMINATING IN INEXTENSIBLE EDGE PORTIONS TO DEFINE IN COMBINATION WITH A WHEEL RIM A CAVITY FOR RETAINING AIR UNDER PRESSURE, A RUBBERY AIR IMPERVIOUS LINER PORTION ADHERED TO AND COVERING THE CAVITY DEFINING SURFACE OF SAID FABRIC BODY AND EXTENDING FROM ONE EDGE PORTION TO THE OTHER EDGE PORTION, AND A RUBBERY SEALING LAYER ADHERED TO SAID LINER PORTION AND EXTENDING SUBSTANTIALLY THE WIDTH OF SAID TREAD PROTION, SAID SEALING PORTION COMPRISING A RUBBERY COMPOLYMER OF BUTADIENE AND STYRENE COPOLYMERIZED AT A TEMPERATURE OF ABOUT 41*F. A SULFUR CONTENT OF 5 PERCENT BY WEIGHT BASED ON THE COPOLYMR CONTENT AND AN IRON OXIDE CONTENT OF ABOUT 30 PERCENT BY WEIGHT OF COPOLYMER.
Claim 2
Dependent Claim
127 words
A PNEUMATIC TIRE COMPRISED OF A RUBBERY TREAD PORTION, AN OPEN BELLIED FABRIC BODY PORTION TERMINATING IN INEXTENSIBLE EDGE PORTIONS TO DEFINE IN COMBINATION WITH A WHEEL RIM A CAVITY FOR RETAINING AIR UNDER PRESSURE, A RUBBERY AIR IMPERVIOUS LINER PORTION ADHERED TO AND COVERING THE CAVITY DEFINING SURFACE OF SAID FABRIC BODY AND EXTENDING FROM ONE EDGE PORTION TO THE OTHER EDGE PORTION, AND A RUBBERY SEALING LAYER ADHERED TO SAID LINER PORTION AND EXTENDING SUBSTANTIALLY THE WIDTH OF SAID TREAD PROTION, SAID SEALING PORTION COMPRISING A RUBBERY COMPOLYMER OF BUTADIENE AND STYRENE COPOLYMERIZED AT A TEMPERATURE OF ABOUT 41*F. A SULFUR CONTENT OF 5 PERCENT BY WEIGHT BASED ON THE COPOLYMR CONTENT AND AN IRON OXIDE CONTENT OF ABOUT 30 PERCENT BY WEIGHT OF COPOLYMER.
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) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |