Patent US4834418A successfully refreshed from Google Patents.
US4834418A
Expired / Lapsed
US
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Electronic controlled gas suspension system
Assignee: Toyota Motor Corp
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Filing: 1988-04-11
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Granted: 1989-05-30
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Expires: 2008-04-11
Abstract
Abstract An electronic controlled gas suspension system for realizing rapid control of the vehicle attitude and uniform actions of air springs. In this suspension system, gas states in plural reserve tanks are detected by gas state detection means to energize/deenergize communication means for communicating/discommunicating the reserve tanks one another when a pressure difference among the reserve tanks is determined to attain a predetermined value, so that the air states in the plural pressure tanks can be controlled to be equal.
Inventors
- 👤 Shuuichi Buma
- 👤 Nobutaka Ohwa
- 👤 Osamu Takeda
- 👤 Toshio Aburaya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:14
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/015; B60G17/0152; B60G17/0155; B60G17/02; B60G17/04; B60G17/052; B60G17/0523; B60G2202/00; B60G2202/10; B60G2202/15; B60G2202/152; B60G2202/40; B60G2202/43; B60G2202/432; B60G2400/00; B60G2400/10; B60G2400/20; B60G2400/204; B60G2400/25; B60G2400/252; B60G2400/30; B60G2400/33; B60G2400/40; B60G2400/41; B60G2400/50; B60G2400/51; B60G2400/512; B60G2400/5122; B60G2400/51222; B60G2500/00; B60G2500/10; B60G2500/102; B60G2500/20; B60G2500/201; B60G2500/2014; B60G2500/202; B60G2500/2021; B60G2500/22; B60G2500/30; B60G2600/00; B60G2600/02; B60G2600/20; B60G2600/66; B60G2800/00; B60G2800/01; B60G2800/012; B60G2800/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
163 words
A gas suspension system having a plurality of gas suspensions (M2) each provided for a wheel (M1) of a vehicle comprising; a plurality of reserve tanks (M3) each communicably connected to at least one of the gas suspensions and all provided for effecting a same function against the gas suspensions, the function being either to supply gas to the gas suspensions or to receive gas from the gas suspensions; communication means (M4) for making a communication among the plurality of reserve tanks effecting the same function; a plurality of gas state detection means (M5) each provided for each of the plurality of reserve tanks for detecting a gas state of each of the plurality of reserve tanks; and communication control means (M6) for effecting the communication means to make a communication among the plurality of reserve tanks effecting the same function when a difference among the detected gas states of the plurality of reserve tanks effecting the same function becomes a predetermined state.
Claim 2
Dependent Claim
163 words
A gas suspension system having a plurality of gas suspensions (M2) each provided for a wheel (M1) of a vehicle comprising; a plurality of reserve tanks (M3) each communicably connected to at least one of the gas suspensions and all provided for effecting a same function against the gas suspensions, the function being either to supply gas to the gas suspensions or to receive gas from the gas suspensions; communication means (M4) for making a communication among the plurality of reserve tanks effecting the same function; a plurality of gas state detection means (M5) each provided for each of the plurality of reserve tanks for detecting a gas state of each of the plurality of reserve tanks; and communication control means (M6) for effecting the communication means to make a communication among the plurality of reserve tanks effecting the same function when a difference among the detected gas states of the plurality of reserve tanks effecting the same function becomes a predetermined state.
Claim 3
Dependent Claim
68 words
The gas suspension system according to claim 1 wherein; the gas state detected by the gas state detection means is a pressure of each of the plurality of reserve tanks; and the communication control means effects the communication means to make a communication among the plurality of reserve tanks effecting the same function when a maximum pressure difference among the detected pressures is greater than a predetermined value.
Claim 4
Dependent Claim
133 words
A gas suspension system having a plurality of gas suspensions each provided for a wheel of a vehicle and divided into two groups, the gas suspension system comprising; two high pressure reserve tanks each communicably connected to each of the groups of the gas suspensions for supplying gas to the gas suspensions; communication means for allowing communication between the two high pressure reserve tanks; two gas state detection means each provided for each of the two high pressure reserve tanks fr detecting a gas pressure in each of the two high pressure reserve tanks; and communication control means for effecting the communication means to make a communication between the two high pressure reserve tanks when a difference between the detected gas pressures of the two high pressure reserve tanks exceeds a predetermined value.
Claim 5
Dependent Claim
133 words
A gas suspension system having a plurality of gas suspensions each provided for a wheel of a vehicle and divided into two groups, the gas suspension system comprising; two high pressure reserve tanks each communicably connected to each of the groups of the gas suspensions for supplying gas to the gas suspensions; communication means for allowing communication between the two high pressure reserve tanks; two gas state detection means each provided for each of the two high pressure reserve tanks fr detecting a gas pressure in each of the two high pressure reserve tanks; and communication control means for effecting the communication means to make a communication between the two high pressure reserve tanks when a difference between the detected gas pressures of the two high pressure reserve tanks exceeds a predetermined value.
Claim 6
Dependent Claim
133 words
A gas suspension system having a plurality of gas suspensions each provided for a wheel of a vehicle and divided into two groups, the gas suspension system comprising; two low pressure reserve tanks each communicably connected to each of the groups of the gas suspensions for receiving gas from the gas suspensions; communication means for allowing communication between the two low pressure reserve tanks; two gas state detection means each provided for each of the two low pressure reserve tanks for detecting a gas pressure in each of the two low pressure reserve tanks; and communication control means for effecting the communication means to make a communication between the two low pressure reserve tanks when a difference between the detected gas pressures of the two low pressure reserve tanks exceeds a predetermined value.
Claim 7
Dependent Claim
133 words
A gas suspension system having a plurality of gas suspensions each provided for a wheel of a vehicle and divided into two groups, the gas suspension system comprising; two low pressure reserve tanks each communicably connected to each of the groups of the gas suspensions for receiving gas from the gas suspensions; communication means for allowing communication between the two low pressure reserve tanks; two gas state detection means each provided for each of the two low pressure reserve tanks for detecting a gas pressure in each of the two low pressure reserve tanks; and communication control means for effecting the communication means to make a communication between the two low pressure reserve tanks when a difference between the detected gas pressures of the two low pressure reserve tanks exceeds a predetermined value.
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) | 1992-05-29 | 1992-11-28 | 1993-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-29 | 1996-11-28 | 1997-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-29 | 2000-11-28 | 2001-05-30 | $7700.00 | Window Closed / Lapsed |