US4371023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubeless tire with insert for preventing collapse in the event of loss of air pressure
Assignee: AQUALUME INCORPORATED A CORP OF NY
•
Filing: 1980-11-24
•
Granted: 1983-02-01
•
Expires: 2000-11-24
Abstract
Abstract An insert for tubeless tires to maintain vehicle control and prevent tire collapse in the event of puncture or other loss of air pressure. The insert has a toroidal center core of solid material, a foam casing of compressible but resilient foam material annularly surrounding the cylindrical core, and a thin outer flexible shell annularly surrounding the casing.
Inventors
- 👤 Thomas G. Campagna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:11
CPC Classifications
B; B60; B60C; B60C17/00; B60C17/04; B60C17/06; B60C17/065; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10279; Y10T152/10378; Y10T152/10387; Y10T152/10396; Y10T152/10405; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1376; Y10T428/23; Y10T428/233
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
94 words
The combination of an inflatable tubeless tire and an insert within the tubeless tire for preventing collapse in the event of loss of air pressure, the insert comprising: (a) a toroidal core of solid material; (b) a resilient foam casing annularly surrounding the core; (c) a thin outer flexible shell annularly surrounding the casing; and (d) flange means flexibly and integrally formed as part of the core for bowing out towrds the tire sidewalls after puncture of other loss of air pressure to give added strength to the tire sidewalls and prevent additional collapse.
Claim 2
Dependent Claim
94 words
The combination of an inflatable tubeless tire and an insert within the tubeless tire for preventing collapse in the event of loss of air pressure, the insert comprising: (a) a toroidal core of solid material; (b) a resilient foam casing annularly surrounding the core; (c) a thin outer flexible shell annularly surrounding the casing; and (d) flange means flexibly and integrally formed as part of the core for bowing out towrds the tire sidewalls after puncture of other loss of air pressure to give added strength to the tire sidewalls and prevent additional collapse.
Claim 3
Dependent Claim
85 words
The combination of an inflatable tubeless tire and an insert within the tubeless tire for preventing collapse in the event of loss of air pressure, the insert comprising: (a) a toroidal core of solid material; (b) a resilient foam casing annularly surrounding the core; (c) a thin outer flexible shell annularly surrounding the casing; and further including wedge means attached to the interior of the tire sidewalls to give added strength thereto and prevent additional sidewall collapse after puncture or other loss of air pressure.
Claim 4
Dependent Claim
85 words
The combination of an inflatable tubeless tire and an insert within the tubeless tire for preventing collapse in the event of loss of air pressure, the insert comprising: (a) a toroidal core of solid material; (b) a resilient foam casing annularly surrounding the core; (c) a thin outer flexible shell annularly surrounding the casing; and further including wedge means attached to the interior of the tire sidewalls to give added strength thereto and prevent additional sidewall collapse after puncture or other loss of air pressure.
Claim 5
Dependent Claim
78 words
The combination of an inflatable tubeless tire and an insert within the tubeless tire for preventing collapse in the event of loss of air pressure, the insert comprising: (a) a toroidal core of solid material; (b) a resilient foam casing annularly surrounding the core; (c) a thin outer flexible shell annularly surrounding the casing; and (d) means for detachably securing the insert to the inner bottom tire wall to prevent slippage of the insert relative to the tire.
Claim 6
Dependent Claim
78 words
The combination of an inflatable tubeless tire and an insert within the tubeless tire for preventing collapse in the event of loss of air pressure, the insert comprising: (a) a toroidal core of solid material; (b) a resilient foam casing annularly surrounding the core; (c) a thin outer flexible shell annularly surrounding the casing; and (d) means for detachably securing the insert to the inner bottom tire wall to prevent slippage of the insert relative to the tire.
Claim 7
Dependent Claim
28 words
The insert according to claim 3 wherein the foam casing comprises a compressible but resilient foam that is restored to its original shape after the release of pressure.
Claim 8
Dependent Claim
20 words
The insert according to claim 3 wherein the core comprises hard rubber and the outer shell comprises a waterproof material.
Claim 9
Dependent Claim
22 words
The insert according to claim 3 wherein the volume of the insert is substantially equal to the interior volume of the tire.
Claim 10
Dependent Claim
26 words
The insert according to claim 3 wherein the core comprises a plurality of individual members, the members connected one to the other to form the core.
Claim 11
Dependent Claim
46 words
The insert according to claim 1 further including flange means flexibly and integrally formed as part of the core for bowing out towards the tire sidewalls after puncture or other loss of air pressure to give added strength to the tire sidewalls and prevent additional collapse.
Claim 12
Dependent Claim
15 words
The insert according to claim 3 wherein the cross-section of the core is substantially circular.
Claim 13
Dependent Claim
36 words
The insert according to claim 3 further including wedge means attached to the interior of the tire sidewalls to give added strength thereto and prevent additional sidewall collapse after puncture or other loss of tire pressure.
References Cited (Backward Citations)
US974861A
Cited
US1396648A
Cited
US1374390A
Cited
US1585875A
Cited
US2708469A
Cited
US3250310A
Cited
US3397728A
Cited
US4163466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |