US3739829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire and wheel assemblies
Assignee: Dunlop Holdings Ltd
•
Filing: 1971-06-18
•
Granted: 1973-06-19
•
Expires: 1991-06-18
Abstract
Abstract A pneumatic tire and wheel assembly including a single chamber pneumatic tire in which is provided a flowable liquid lubricant to facilitate relative movement between the internal surface of the tire which come into contact when the tire is run under load in the deflated condition, of which the following is a specification.
Inventors
- 👤 L Powell
- 👤 R Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:59
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0681; B29D30/0685; B29C; B29C73/00; B29C73/16; B29C73/163; B60; B60C; B60C15/00; B60C15/02; B60C15/0209; B60C15/0226; B60C17/00; B60C17/10; B60C3/00; B60C5/00; B60C5/12; B29D2030/0686; B29D2030/0697; B29L; B29L2030/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
86 words
A pneumatic tire and wheel assembly having a single inflation chamber capable of being run in a deflated condition comprising: 1. a wheel having a wheel rim with a pair of opposed annular flanges; 2. a pneumatic tire having a tread portion whose width is greater than the width of the wheel rim measured between the flanges; 3. a flowable liquid lubricant which, when the assembly is used with the tire in a deflated condition, will facilitate relative movement of contacting interior surfaces of the tire.
Claim 2
Dependent Claim
86 words
A pneumatic tire and wheel assembly having a single inflation chamber capable of being run in a deflated condition comprising: 1. a wheel having a wheel rim with a pair of opposed annular flanges; 2. a pneumatic tire having a tread portion whose width is greater than the width of the wheel rim measured between the flanges; 3. a flowable liquid lubricant which, when the assembly is used with the tire in a deflated condition, will facilitate relative movement of contacting interior surfaces of the tire.
Claim 3
Dependent Claim
22 words
a pneumatic tire having a tread portion whose width is greater than the width of the wheel rim measured between the flanges;
Claim 4
Dependent Claim
22 words
a pneumatic tire having a tread portion whose width is greater than the width of the wheel rim measured between the flanges;
Claim 5
Dependent Claim
18 words
The pneumatic tire and wheel assembly of claim 1, in which the liquid lubricant is miscible with water.
Claim 6
Dependent Claim
22 words
The pneumatic tire and wheel assembly of claim 1, in which the liquid lubricant does not freeze at temperatures above -20* C.
Claim 7
Dependent Claim
28 words
a flowable liquid lubricant which, when the assembly is used with the tire in a deflated condition, will facilitate relative movement of contacting interior surfaces of the tire.
Claim 8
Dependent Claim
28 words
a flowable liquid lubricant which, when the assembly is used with the tire in a deflated condition, will facilitate relative movement of contacting interior surfaces of the tire.
Claim 9
Dependent Claim
33 words
The pneumatic tire and wheel assembly of claim 1, in which at least one liquid component of the lubricant has a vapor pressure of less than 50 mm of mercury at 140* C.
Claim 10
Dependent Claim
32 words
The pneumatic tire and wheel assembly of claim 1, in which the liquid lubricant includes some puncture sealing material in order to at least partially seal a puncture occuring in the tire.
Claim 11
Dependent Claim
21 words
The pneumatic tire and wheel assembly of claim 1, in which the liquid lubricant has a specific gravity less than 1.4.
Claim 12
Dependent Claim
23 words
The pneumatic tire and wheel assembly of claim 1, in which the tire has an aspect ratio between 30 percent and 75 percent.
Claim 13
Dependent Claim
26 words
The pneumatic tire and wheel assembly of claim 7, in which the aspect ratio of the tire is in the range 55 percent to 70 percent.
Claim 14
Dependent Claim
52 words
The pneumatic tire and wheel assembly of claim 1, in which the wheel rim upon which the tire is mounted is substantially flat based without a well into which the tire beads can fall if they are displaced from their seats, the rim being divisible to permit mounting of the tire thereon.
Claim 15
Dependent Claim
49 words
The pneumatic tire and wheel assembly of claim 1, in which the wheel rim upon which the tire is mounted is produced initially with a well to permit mounting of the tire on the rim, the well being closed by axial compression after the tire has been mounted thereon.
Claim 16
Dependent Claim
44 words
The pneumatic tire and wheel assembly of claim 1, in which the liquid lubricant contains 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 or partly deflated condition.
Claim 17
Dependent Claim
40 words
The pneumatic tire and wheel assembly of claim 1, in which the total amount of lubricant in the tire is in the range of 105 to 1,300 mls of lubricant per square meter of internal surface area of the tire.
Claim 18
Dependent Claim
39 words
The pneumatic tire and wheel assembly of claim 1, in which the liquid lubricant has a formulation which enables the lubricant to be frothed or foamed by the violent agitation caused by rotation of the tire and wheel assembly.
Claim 19
Dependent Claim
19 words
The pneumatic tire and wheel assembly of claim 1, including a deforming agent to control the extent of foaming.
Claim 20
Dependent Claim
33 words
The pneumatic tire and wheel assembly of claim 1, in which the rim has an area of excess material bent so as to leave the rim substantially without a well between the flanges.
References Cited (Backward Citations)
US2316549A
Cited
US3628585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |