US3769122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated butyl tubeless tire innerliner
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1971-04-27
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Granted: 1973-10-30
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Expires: 1991-04-27
Abstract
Abstract Tubeless tire inner liners of butyl rubber or halobutyl rubber are formed by applying to the inner surfaces of such tire carcasses, either during their manufacture, or to previously made tires, i.e. new tire casings or used tire casings for retreading, a coating of the said rubber, as a sprayable, self-curing, or mild heat curing rubber cement, the rubber or blends of rubbers having a viscosity average molecular weight, in the case of a single rubber, or a calculated averaged viscosity average molecular weight, in the case of a blend of rubbers, of between about 28,000 and about 285,000, with the cement having a total solids content of between about 20 and about 80 wt. %, the remainder being organic solvent.
Inventors
- 👤 D Coddington
- 👤 W Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:49
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22; B; B29; B29D; B29D30/00; B29D30/0005; B29D30/06; B29D30/0681; B60; B60C; B60C1/00; B60C1/0008; C08L23/26; C08L23/28; C08L23/283; B29D2030/0682; C08K; C08K3/00; C08K3/02; C08K3/04; C08L2205/00; C08L2205/02; C08L2312/00; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10666; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
14 words
A method as in claim 1 wherein the cement is a butyl rubber cement.
Claim 2
Dependent Claim
47 words
A method as in claim 2 wherein a blend of butyl rubbers is employed, one being of high molecular weight and another being of low molecular weight,and wherein the calculated averaged viscosity average molecular weight of the butyl rubber blend is between about 28,000 and about 285,000.
Claim 3
Dependent Claim
14 words
A method as in claim 1 wherein the cement is a halobutyl rubber cement.
Claim 4
Dependent Claim
48 words
A method as in claim 4 wherein a blend of halobutyl rubbers is employed, one being of high molecular weight and another being of low molecular weight, and wherein the calculated averaged viscosity average molecular weight of the halobutyl rubber blend is between about 28,000 and about 285,000.
Claim 5
Dependent Claim
13 words
A method as in claim 4 wherein the halobutyl rubber is chlorobutyl rubber.
Claim 6
Dependent Claim
13 words
A method as in claim 5 wherein the halobutyl rubbers are chlorobutyl rubbers.
Claim 7
Dependent Claim
56 words
A method as in claim 3 wherein the blend of rubbers is about 60 percent of butyl rubber having an Mv of about 365,000 and about 40 percent of butyl rubber having an Mv of about 30,000, with a total solids content in toluene of about 30 wt. %, and containing carbon black as a filler.
Claim 8
Dependent Claim
43 words
A method as in claim 2 wherein the rubber in the cement is butyl rubber of about 30,000 Mv and the cement contains carbon black as a filler, and curatives, and has a total solids content of about 50 wt. % in toluene.
Claim 9
Dependent Claim
64 words
A tubeless pneumatic tire containing over its entire inner surface, a self-cured continuous innerliner formed by spraying the said inner surface with a sprayable cement coating composition of butyl rubber or halobutyl rubber having a viscosity average molecular weight between about 28,000 and about 285,000 containing fillers and curatives to a total solids content of between about 20 and about 80 percent by weight.
Claim 10
Dependent Claim
53 words
A tubeless pneumatic tire as in claim 10 wherein the coating composition is a blend of butyl or halobutyl rubbers, one being of high molecular weight and another being of low molecular weight, and wherein the calculated averaged viscosity average molecular weight of the rubber blend is between about 28,000 and about 285,000.
Claim 11
Dependent Claim
52 words
A tubeless pneumatic tire as in claim 11 wherein the rubber blend is a blend of butyl rubbers, one being of about 365,000 Mv in the amount of 60 percent, and the other being of about 30,000 Mv in the amount of about 40 percent and with carbon black as a filler.
Claim 12
Dependent Claim
25 words
A tubeless pneumatic tire as in claim 11, wherein the rubber is butyl rubber of about 30,000 Mv, and with carbon black as a filler.
References Cited (Backward Citations)
US2879823A
Cited
US2891595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |