US4421151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire-pressure regulating system
Assignee: Robert Bosch GmbH
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Filing: 1982-03-04
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Granted: 1983-12-20
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Expires: 2002-03-04
Abstract
Abstract A tire-pressure regulating system is proposed with which the air pressure in the vehicle tires can be varied while driving. The tires are connected to supply lines in which rotor connections, control valves, flow restrictive elements and an adjustable regulating valve are disposed. A relay valve and an axle valve are incorporated following the regulating valve. By means of guiding the supply line in and at the axle valve in a particular manner, an acceleration of the pressure equalization process is attained. The tire-pressure regulating device is preferably usable in trucks and trailer trucks.
Inventors
- 👤 Werner Stumpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:53
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/001; B60C23/003; B60C23/00372; B60C23/00309; B60C23/00318; B60C23/00354; Y; Y10; Y10T; Y10T137/00; Y10T137/3584; Y10T137/36; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/86614
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
A tire-pressure regulating system for varying the pressure in vehicle tires while driving, said system includes a compressed-air supply device which is connected with said vehicle tires via a supply line, said system further including rotor connections, control valves, flow restrictive means and an adjustable regulating valve, as well as a shut-off valve and an axle valve being disposed downstream of said regulating valve, characterized in that said axle valve is connected to said supply line on an inlet side and to a pair of branch supply lines on its outlet side, said axle valve having two switching positions, and further wherein in one switching position of said axle valve said pair of branch lines are connectable to the supply line leading back to a relay valve and in the other switching position the branch lines are connectable to a relief means.
Claim 2
Dependent Claim
142 words
A tire-pressure regulating system for varying the pressure in vehicle tires while driving, said system includes a compressed-air supply device which is connected with said vehicle tires via a supply line, said system further including rotor connections, control valves, flow restrictive means and an adjustable regulating valve, as well as a shut-off valve and an axle valve being disposed downstream of said regulating valve, characterized in that said axle valve is connected to said supply line on an inlet side and to a pair of branch supply lines on its outlet side, said axle valve having two switching positions, and further wherein in one switching position of said axle valve said pair of branch lines are connectable to the supply line leading back to a relay valve and in the other switching position the branch lines are connectable to a relief means.
Claim 3
Dependent Claim
26 words
A tire-pressure regulating system as defined by claim 1, characterized in that said supply line has approximately the same cross section as said supply branch lines.
Claim 4
Dependent Claim
20 words
A tire-pressure regulating system as defined by claim 1, characterized in that said supply line further includes a throttle means.
Claim 5
Dependent Claim
23 words
A tire-pressure regulating system as defined by claim 1, characterized in that said relief means is embodied separately for each supply branch line.
Claim 6
Dependent Claim
29 words
A tire-pressure regulating system as defined by claim 1, characterized in that said control valves utilize a pressure drop from said flow restrictive means as an aid to switching.
Claim 7
Dependent Claim
23 words
A tire-pressure regulating system as defined by claim 2, characterized in that said relief means is embodied separately for each supply branch line.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |