Patent US4582108A successfully refreshed from Google Patents.
US4582108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire inflation/deflation system
Assignee: Grumman Corp
•
Filing: 1984-07-26
•
Granted: 1986-04-15
•
Expires: 2004-07-26
Abstract
Abstract An automatic tire inflation-pressure regulating system for wheeled vehicles with pneumatic tires. The system has a system control assembly in the vehicle operator's compartment, control signal transmitter assemblies on the vehicle body in close proximity with each vehicle road wheel, and a tire pressure-regulating wheel assembly on each wheel. The transmitter assemblies convert electrical command signals initiated by the control assembly to RF signals that are received by an electronic module in each wheel assembly. Means in each wheel assembly selectively deflate or inflate their respective tires in response to the RF control signals. Gas under pressure for inflating the tires is provided either by a plurality of gas generators or by a pressurized gas-generating liquid.
Inventors
- 👤 Edward G. Markow
- 👤 Jerome Kirsch
- 👤 M. Alan Kopsco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:22
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/001; B60C23/004; B60C23/10; Y; Y10; Y10T; Y10T137/00; Y10T137/3584; Y10T137/36; Y10T137/6851; Y10T137/6855; Y10T137/6881; Y10T137/6895
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
139 words
An automatic tire inflation-pressure regulating system for wheeled vehicles with pneumatic tires comprising: means fitted on each of the road wheels of said vehicle for regulating the inflation pressure of said pneumatic tires mounted on said wheels, said pressure regulating means including deflation means and inflation means in fluid communication with the interior of said tires, and RF signal receiving means associated with means for actuating selectively either said deflation means or said inflation means; RF signal transmitting means on said vehicle at a location proximate each of said wheels for providing command signals to said signal receiving means for activating said tire inflation-pressure regulating means on said wheels; control means in said vehicle operable manually by an occupant thereof and connected to said RF signal transmitting means for providing command inputs for selectively deflating or inflating said tires.
Claim 2
Dependent Claim
139 words
An automatic tire inflation-pressure regulating system for wheeled vehicles with pneumatic tires comprising: means fitted on each of the road wheels of said vehicle for regulating the inflation pressure of said pneumatic tires mounted on said wheels, said pressure regulating means including deflation means and inflation means in fluid communication with the interior of said tires, and RF signal receiving means associated with means for actuating selectively either said deflation means or said inflation means; RF signal transmitting means on said vehicle at a location proximate each of said wheels for providing command signals to said signal receiving means for activating said tire inflation-pressure regulating means on said wheels; control means in said vehicle operable manually by an occupant thereof and connected to said RF signal transmitting means for providing command inputs for selectively deflating or inflating said tires.
Claim 3
Dependent Claim
38 words
The inflation-pressure regulatng system of claim 1 wherein said regulating means on each of said wheels includes an energy source for supplying power for the operation of said RF signal receiving means and said deflation and inflation means.
Claim 4
Dependent Claim
23 words
The inflation-pressure regulating system of claim 1 wherein said inflation means include gas generating means for providing a supply of gas under pressure.
Claim 5
Dependent Claim
31 words
The inflation-pressure regulating system of claim 3 wherein said gas generating means are charged with a combustible chemical propellant and wherein electrical means are provided for igniting said propellant on demand.
Claim 6
Dependent Claim
14 words
The inflation-pressure regulating system of claim 4 wherein said chemical propellant is ammonium nitrate.
Claim 7
Dependent Claim
55 words
The inflation-pressure regulating system of claim 3 wherein said gas generating means is a volatile liquid contained in a reservoir under pressure and wherein valve means are provided to meter said liquid from said reservoir whereby said liquid undergoes a change of state such that its gaseous phase can be used to inflate said tire.
Claim 8
Dependent Claim
14 words
The inflation-pressure regulating system of claim 6 wherein said liquid is a Freon refrigerant.
Claim 9
Dependent Claim
14 words
The inflation-pressure regulating system of claim 7 wherein said liquid is Freon 22 (monochlorodifluoromethane).
Claim 10
Dependent Claim
36 words
The inflation-pressure regulating system of claim 1 wherein an inner tube is carried in the tire whose pressure is being regulated and wherein the inflation and deflation means are in fluid communication with said inner tube.
References Cited (Backward Citations)
US1127079A
Cited
US1338337A
Cited
US1827662A
Cited
CH197807A
Cited
US2211935A
Cited
US2579048A
Cited
US2786333A
Cited
US3483053A
Cited
US3511294A
Cited
US3833041A
Cited
US4313483A
Cited
JPS5569375A
Cited
GB2047638A
Cited
US4340077A
Cited
US4421151A
Cited
US4470506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |