US3946783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tires
Assignee: Dunlop Ltd
•
Filing: 1974-12-23
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Granted: 1976-03-30
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Expires: 1994-12-23
Abstract
Abstract A tire and wheel assembly having a lubricant to enable it to be operated in a deflated condition without destructive heating in which one or more ingredients of the lubricant composition are enclosed in an enclosing means, the other ingredient or ingredients of the composition being placed in the inflation chamber of the assembly. The enclosing means release the first ingredient or ingredients into the inflation chamber, upon loss of inflation pressure, to form the composition.
Inventors
- 👤 Reginald Harold Edwards
- 👤 Geoffrey Lionel Coulter
- 👤 Alan Michael Dodd
- 👤 Michael John Kenney
- 👤 Alan John Bourne
- 👤 David Alexander Bird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:58
CPC Classifications
B; B60; B60C; B60C17/00; B29; B29D; B29D30/00; B29D30/06; B29D30/0681; B29D30/0685; B60C17/10; B60C3/00; B29D2030/0686; B29D2030/0697; C; C10; C10M; C10M2201/00; C10M2201/02; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/062; C10M2201/065; C10M2201/066; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2201/085; C10M2201/087; C10M2201/10; C10M2201/102; C10M2201/105; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/14; C10M2205/20; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/04; C10M2207/044; C10M2207/046; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/101; C10M2209/102; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/107; C10M2209/108; C10M2209/12; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/10; C10M2215/102; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/044; C10M2217/045; C10M2219/00; C10M2219/04; C10M2219/044; C10M2227/00; C10M2227/02; C10M2227/04; C10M2227/08; C10M2227/081; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10666; Y10T152/10675
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
197 words
A pneumatic tire and rim assembly capable of being run in a deflated condition comprising: a. a pneumatic tire having an interior surface and mounted upon a rim, to define an inflation chamber, said assembly having means to prevent the tire beads from becoming dislodged from the rim when operated in a deflated condition; b. means at least for lubricating contacting interior surfaces of the tire when operated in a deflated condition comprising a composition having a plurality of ingredients at least one of said ingredients being a lubricating material; c. said composition being carried in the assembly in at least two parts, one part comprising a gelled lubricating material, the other part comprising a break down reagent for said gel; d. enclosing means for enclosing the part comprising a break down reagent for the gel separately from the gel; e. the gel being carried on the interior surface of the tire; f. said enclosing means being adapted to release the part of the composition comprising break down reagent into said inflation chamber upon deflation or substantial loss of inflation pressure to permit said break down reagent to dilate the gel and form a mobile lubricating composition.
Claim 2
Dependent Claim
197 words
A pneumatic tire and rim assembly capable of being run in a deflated condition comprising: a. a pneumatic tire having an interior surface and mounted upon a rim, to define an inflation chamber, said assembly having means to prevent the tire beads from becoming dislodged from the rim when operated in a deflated condition; b. means at least for lubricating contacting interior surfaces of the tire when operated in a deflated condition comprising a composition having a plurality of ingredients at least one of said ingredients being a lubricating material; c. said composition being carried in the assembly in at least two parts, one part comprising a gelled lubricating material, the other part comprising a break down reagent for said gel; d. enclosing means for enclosing the part comprising a break down reagent for the gel separately from the gel; e. the gel being carried on the interior surface of the tire; f. said enclosing means being adapted to release the part of the composition comprising break down reagent into said inflation chamber upon deflation or substantial loss of inflation pressure to permit said break down reagent to dilate the gel and form a mobile lubricating composition.
Claim 3
Dependent Claim
42 words
A pneumatic tire and wheel assembly according to claim 1 in which the part of the composition carried on the interior surface of the assembly includes ingredients selected from the group consisting of a gelled poly(oxyalkylene) glycol and modified poly (oxyalkylene) glycol.
Claim 4
Dependent Claim
82 words
A pneumatic tire and wheel assembly according to claim 2 in which part of the composition in said enclosing means includes the means to at least partially reinflate the tire comprising a volatile liquid which has a boiling point sufficiently low to appreciably volatilize at the temperature generated by running of the tire in a deflated condition, and comprises a break down reagent for the gel so that the gel is broken when the volatile ingredients are released from the enclosing means.
Claim 5
Dependent Claim
33 words
A pneumatic tire and wheel assembly according to claim 1 in which said gelled lubricating material is selected from the group consisting of a gelled poly(oxyalkylene) glycol and a modified poly (oxyalkylene) glycol.
Claim 6
Dependent Claim
23 words
A pneumatic tire and wheel assembly according to claim 4 in which the gel contains, as a gelling agent, a finely divided filler.
Claim 7
Dependent Claim
27 words
A pneumatic tire and wheel assembly according to claim 4 in which the gel is one prepared from high and low molecular weight polymers containing functional groups.
Claim 8
Dependent Claim
24 words
A pneumatic tire and wheel assembly according to claim 4 in which the gel is one prepared by cross-linking with isocyanates under controlled conditions.
Claim 9
Dependent Claim
25 words
A pneumatic tire and wheel assembly according to claim 4 in which the gel is one prepared by cross-linking by the use of metal oxides.
Claim 10
Dependent Claim
18 words
A pneumatic tire and wheel assembly according to claim 5 in which the filler is a silicate filler.
Claim 11
Dependent Claim
56 words
A pneumatic tire and wheel assembly according to claim 1 in which the part of the lubricant composition enclosed in the enclosing means comprises at least one volatile ingredients selected from the group consisting of water, alcohols, dilute acids and alkalis, aprotic solvents and aqueous solutions of inorganic salts of group I, II, III, and IV.
Claim 12
Dependent Claim
23 words
A pneumatic tire and wheel assembly according to claim 10 in which the enclosed ingredients comprise water, an alcohol and a weak acid.
Claim 13
Dependent Claim
33 words
A pneumatic tire and wheel assembly according to claim 1 in which the gel is of sufficiently high viscosity not to flow around inside the tire while the tire is stationary or rotating.
Claim 14
Dependent Claim
47 words
A pneumatic tire and wheel assembly according to claim 1 in which the wheel rim is a split rim having no well into which the tire bead can fall and the enclosing means comprises a plurality of containers mounted on a supporting band extending around the rim.
Claim 15
Dependent Claim
31 words
A pneumatic tire and wheel assembly according to claim 1 in which the pneumatic tire is a radial ply pneumatic tire having an aspect ration in the range 50% to 75%.
Claim 16
Dependent Claim
36 words
A pneumatic tire and wheel assembly according to claim 1 in which the pneumatic tire has a tread which is wider than the width between the flanges of the rim on which the tire is mounted.
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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |