US3860054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assemblies
Assignee: Dunlop Ltd
•
Filing: 1972-11-20
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Granted: 1975-01-14
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Expires: 1992-11-20
Abstract
Abstract A valve assembly for the inflation of and the release of lubricant into a pneumatic tire comprises a housing incorporating a control chamber, having inlet and outlet valves, which valves are both open or shut enabling inflation, through the chamber, of said chamber and an associated tire to substantially equal pressures. The assembly includes a pressure sensitive device arranged to respond to pressure differentials between the chamber and tire to release lubricant into the tire when a predetermined pressure differential exists.
Inventors
- 👤 Frederick Vernon Prottey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 07:53
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/20; B; B60; B60C; B60C17/00; B60C17/10; B60C29/00; B60C29/06; B60C29/062; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1692; Y10T137/1714
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
156 words
A valve assembly for the inflation of a pneumatic tire and the dispensing of lubricant for the interior surface of the tire comprising a housing, a control chamber incorporated in said housing, said chamber having inlet and outlet valves, the inlet and outlet valves being arranged to be either both closed to seal the control chamber or both open to allow the passaGe of air through the control chamber to the interior of an associated pneumatic tire thereby ensuring that the control chamber and the interior of the tire are at substantially the same pressure when the desired tire pressure is reached, and a pressure sensitive device arranged to respond to pressure differentials between the control chamber and the interior of the associated pneumatic tire and to release lubricant into the interior of the tire when the pressure in the control chamber exceeds that in the interior of the associated pneumatic tire by a predetermined amount.
Claim 2
Dependent Claim
156 words
A valve assembly for the inflation of a pneumatic tire and the dispensing of lubricant for the interior surface of the tire comprising a housing, a control chamber incorporated in said housing, said chamber having inlet and outlet valves, the inlet and outlet valves being arranged to be either both closed to seal the control chamber or both open to allow the passaGe of air through the control chamber to the interior of an associated pneumatic tire thereby ensuring that the control chamber and the interior of the tire are at substantially the same pressure when the desired tire pressure is reached, and a pressure sensitive device arranged to respond to pressure differentials between the control chamber and the interior of the associated pneumatic tire and to release lubricant into the interior of the tire when the pressure in the control chamber exceeds that in the interior of the associated pneumatic tire by a predetermined amount.
Claim 3
Dependent Claim
16 words
A valve assembly according to claim 1 wherein the pressure sensitive device comprises a rupturable diaphragm.
Claim 4
Dependent Claim
15 words
A valve assembly according to claim 1 wherein the pressure sensitive device comprises a valve.
Claim 5
Dependent Claim
199 words
A valve assembly for the inflation of a pneumatic tire and the dispensing of lubricant for the interior surface of the tire comprising a housing, a control chamber incorporated in said housing, said chamber having inlet and outlet valves, the inlet and outlet valves being arranged to be either both closed to seal the control chamber or both open to allow the passage of air through the control chamber to the interior of an associated pneumatic tire thereby ensuring that the control chamber and the interior of the tire are at substantially the same pressure when the desired tire pressure is reached, a pressure sensitive device arranged to respond to pressure differentials between the control chamber and the interior of the associated pneumatic tire and to release lubricant into the interior of the tire when the pressure in the control chamber exceeds that in the interior of the associated pneumatic tire by a predetermined amount and a flexible diahragm separating the air in the control chamber from the lubricant, the diaphragm being capable of pressurizing the lubricant to a pressure equal to that of the air in the control chamber to subject the pressure sensitive device to said pressure.
Claim 6
Dependent Claim
199 words
A valve assembly for the inflation of a pneumatic tire and the dispensing of lubricant for the interior surface of the tire comprising a housing, a control chamber incorporated in said housing, said chamber having inlet and outlet valves, the inlet and outlet valves being arranged to be either both closed to seal the control chamber or both open to allow the passage of air through the control chamber to the interior of an associated pneumatic tire thereby ensuring that the control chamber and the interior of the tire are at substantially the same pressure when the desired tire pressure is reached, a pressure sensitive device arranged to respond to pressure differentials between the control chamber and the interior of the associated pneumatic tire and to release lubricant into the interior of the tire when the pressure in the control chamber exceeds that in the interior of the associated pneumatic tire by a predetermined amount and a flexible diahragm separating the air in the control chamber from the lubricant, the diaphragm being capable of pressurizing the lubricant to a pressure equal to that of the air in the control chamber to subject the pressure sensitive device to said pressure.
Claim 7
Dependent Claim
16 words
The valve assembly of claim 4 in which the pressure sensitive device is a rupturable diaphragm.
Claim 8
Dependent Claim
15 words
The valve assembly of claim 4 in which the pressure sensitive device comprises a valve.
Claim 9
Dependent Claim
15 words
A valve assembly according to claim 4 wherein the flexible diaphragm is an extensible diaphragm.
Claim 10
Dependent Claim
200 words
A valve assembly for the inflation of a pneumatic tire and the dispensing of lubricant for the interior surface of the tire comprising a housing, a control chamber incorporated in said housing, said chamber having inlet and outlet valves, the inlet and outlet valves being arranged to be either both closed to seal the control chamber or both open to allow the passage of air through the control chamber to the interior of an associated pneumatic tire thereby ensuring that the control chamber and the interior of the tire are at substantially the same pressure when the desired tire pressure is reached, a lubricant chamber separated from the control chamber by a piston, said piston being positioned to pressurize lubricant in the lubricant chamber to a pressure which is a function of the pressure of the air in the control chamber, a pressure sensitive device in communication with the lubricant chamber, arranged to respond to pressure differentials between the control chamber and the interior of the associated pneumatic tire and to release lubricant into the interior of the tire when the pressure in the control chamber exceeds that in the interior of the associated pneumatic tire by a predetermined amount.
Claim 11
Dependent Claim
200 words
A valve assembly for the inflation of a pneumatic tire and the dispensing of lubricant for the interior surface of the tire comprising a housing, a control chamber incorporated in said housing, said chamber having inlet and outlet valves, the inlet and outlet valves being arranged to be either both closed to seal the control chamber or both open to allow the passage of air through the control chamber to the interior of an associated pneumatic tire thereby ensuring that the control chamber and the interior of the tire are at substantially the same pressure when the desired tire pressure is reached, a lubricant chamber separated from the control chamber by a piston, said piston being positioned to pressurize lubricant in the lubricant chamber to a pressure which is a function of the pressure of the air in the control chamber, a pressure sensitive device in communication with the lubricant chamber, arranged to respond to pressure differentials between the control chamber and the interior of the associated pneumatic tire and to release lubricant into the interior of the tire when the pressure in the control chamber exceeds that in the interior of the associated pneumatic tire by a predetermined amount.
Claim 12
Dependent Claim
16 words
The valve assembly of claim 8 in which the pressure sensitive device is a rupturable diaphragm.
Claim 13
Dependent Claim
15 words
The valve assembly of claim 8 in which the pressure sensitive device comprises a valve.
Claim 14
Dependent Claim
41 words
A valve assembly according to claim 8 wherein the piston arrangement comprises a piston having substantially the same diameter over the whole of its length whereby the lubricant is pressurised to substantially the pressure of the air in the control chamber.
Claim 15
Dependent Claim
28 words
A valve assembly according To claim 8 wherein the piston arrangement comprises a piston having two portions, one portion being of a diameter smaller than the other portion.
References Cited (Backward Citations)
US2320042A
Cited
US3476073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |