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US3920061A Expired / Lapsed US ⏱️ 0.0 years remaining

Pneumatic tire and wheel assemblies

Assignee: Dunlop Ltd
•
Filing: 1973-07-03
•
Granted: 1975-11-18
•
Expires: 1993-07-03
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Abstract

Abstract A pneumatic tire and wheel assembly containing a lubricant composition for lubricating the internal surfaces of the assembly when in use in a deflated or substantially under-inflated condition. The composition includes a volatile component to at least partially reinflate the assembly and a puncture sealing material comprising a shredded and/or ground plastics material. A lubricant composition is also included.

Inventors

  • 👤 Michael Peter Japp
  • 👤 Geoffrey Lionel Coulter

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 00:54
CPC Classifications
B; B60; B60C; B60C17/00; B60C17/10; C; C10; C10M; C10M2201/00; C10M2201/02; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/063; C10M2201/065; C10M2201/066; C10M2201/10; C10M2201/102; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/04; C10M2205/14; C10M2205/20; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/12; C10M2211/00; C10M2211/02; C10M2211/024; C10M2211/04; C10M2211/044; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/10; C10M2215/102; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/044; C10M2217/045; C10M2219/00; C10M2219/04; C10M2219/042; 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; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/04; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10666; Y10T152/10675; Y10T152/10684; Y10T152/10729

Claims Analysis

Total Claims: 17
Claim 1
Independent Claim 88 words
A PNEUMATIC TIRE WHEEL ASSEMBLY CONTAINING A LUBRICANT COMPOSITION FOR LUBRICATING THE INTERNAL SURFACES OF THE ASSEMBLY WHEN IN USE IN A DEFLATED OR SUBSTANTIALLY UNDERINFLATED CONDITION, SAID LUBRICANT COMPOSITION INCLUDING A VOLATILE COMPONENT TO AT LAST PARTIALLY REINFLATE THE TIRE AND PUNCTURE SELAING MATERIAL SELECTED FROM SHREDDED POLYETHYKLENE AND GROUND POLYSTRYENE FOAM, SAID MATERIAL HAVING A DENSITY REALTIVE TO THAT OF THE COMPOSITION IN THE RANGE 0.7 TO 1.3 AND COMPRISES PARTICLES HAVING A SIZE SUCH THAT THEY WILL JUST PASS THROUGH A SIEVE HAVING 3MM APERTURES.
Claim 2
Dependent Claim 88 words
A PNEUMATIC TIRE WHEEL ASSEMBLY CONTAINING A LUBRICANT COMPOSITION FOR LUBRICATING THE INTERNAL SURFACES OF THE ASSEMBLY WHEN IN USE IN A DEFLATED OR SUBSTANTIALLY UNDERINFLATED CONDITION, SAID LUBRICANT COMPOSITION INCLUDING A VOLATILE COMPONENT TO AT LAST PARTIALLY REINFLATE THE TIRE AND PUNCTURE SELAING MATERIAL SELECTED FROM SHREDDED POLYETHYKLENE AND GROUND POLYSTRYENE FOAM, SAID MATERIAL HAVING A DENSITY REALTIVE TO THAT OF THE COMPOSITION IN THE RANGE 0.7 TO 1.3 AND COMPRISES PARTICLES HAVING A SIZE SUCH THAT THEY WILL JUST PASS THROUGH A SIEVE HAVING 3MM APERTURES.
Claim 3
Dependent Claim 24 words
An assembly according to claim 1 wherein the shredded polyethylene includes a blend of particle sizes in the range 100 microns to 1.7 mm.
Claim 4
Dependent Claim 18 words
An assembly according to claim 1 wherein the shredded polyethylene particles each have a thickness of 75 microns.
Claim 5
Dependent Claim 25 words
An assembly according to claim 1 wherein the ground polystyrene foam includes a blend of particle sizes in the range 100 microns to 1.7 mm.
Claim 6
Dependent Claim 14 words
An assembly according to claim 1 wherein the puncture sealing material includes nylon fibers.
Claim 7
Dependent Claim 27 words
An assembly according to claim 5 wherein the nylon fibers have a length of 1 to 3 mm and a denier in the range 1 to 6.
Claim 8
Dependent Claim 15 words
An assembly according to claim 1 wherein the puncture sealing material includes particulated vulcanized rubber.
Claim 9
Dependent Claim 24 words
An assembly according to claim 7 wherein the particulated rubber has particle sizes the same as the particle sizes of the particulated plastics material.
Claim 10
Dependent Claim 33 words
An assembly according to claim 1 wherein the puncture sealing material is loose in the inflation chamber formed by said assembly, the remainder of the lubricant composition being held in an enclosing means.
Claim 11
Dependent Claim 32 words
An assembly according to claim 1 wherein the puncture sealing material is loose within the inflation chamber formed by said assembly together with at least one other ingredient of the lubricant composition.
Claim 12
Dependent Claim 27 words
An assembly according to claim 10 wherein the volatile component of the lubricant composition is held in an enclosing means whereby loss of that component is minimized.
Claim 13
Dependent Claim 33 words
An assembly according to claim 10 wherEin the ingredient loose in the inflation chamber comprises a gel in which the puncture sealing material is carried, said assembly further including an enclosed dilatant ingredient.
Claim 14
Dependent Claim 22 words
An assembly according to claim 1 wherein the puncture sealing material together with the lubricant composition are held in an enclosing means.
Claim 15
Dependent Claim 56 words
An assembly according to claim 1 wherein the puncture sealing material comprises a foamed plastics material, said material is attached to an interior surface of the tire in strip form, said strip being located in a position such that on deflation of the assembly the material is ground up between contacting interior surfaces of the tire.
Claim 16
Dependent Claim 18 words
An assembly according to claim 1 wherein the pneumatic tire has an aspect ratio in the range 50-75%.
Claim 17
Dependent Claim 21 words
An assembly according to claim 1 wherein the tire has a tread wider than the distance between the wheel rim flanges.

References Cited (Backward Citations)

US2752979A Cited
US2802505A Cited
US2811190A Cited
US3042098A Cited
US3110669A Cited
US3628585A Cited
US3433743A Cited
US3536621A Cited
US3739829A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-11-17 1979-05-19 1979-11-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-11-17 1983-05-19 1983-11-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-11-17 1987-05-19 1987-11-18 $7700.00 Window Closed / Lapsed

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