Patent US4648621A successfully refreshed from Google Patents.
US4648621A
Expired / Lapsed
US
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Method of adjusting vehicle height
Assignee: Toyota Motor Corp
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Filing: 1985-05-01
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Granted: 1987-03-10
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Expires: 2005-05-01
Abstract
Abstract A method of adjusting the height of a vehicle provided with an air suspension system capable of adjusting the vehicle height and having two air chambers capable of being communicated with and shut off from each other. The method comprises the steps of shutting off temporarily one air chamber from the remaining one and supplying the compressed air to the other air chamber when the vehicle height is to be increased. The supply of the compressed air is carried out at the same time as or prior to the shutting-off.
Inventors
- 👤 Yuji Yokoya
- 👤 Shuuichi Buma
- 👤 Hitoshi Araki
- 👤 Hiroshi Miyata
- 👤 Masanori Hirose
- 👤 Kaoru Ohashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:00
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/02; B60G17/04; B60G17/048; B60G17/0485; B60G21/00; B60G21/02; B60G21/06; F; F16; F16F; F16F9/00; F16F9/06; F16F9/08; F16F9/084; B60G2202/00; B60G2202/30; B60G2202/31; B60G2202/314; B60G2202/40; B60G2202/41; B60G2202/412; B60G2204/00; B60G2204/80; B60G2204/83; B60G2204/8304
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
A method of adjusting the height of a vehicle which includes a gas suspension system for adjusting the vehicle height and having a plurality of gas chambers for being communicated with and shut off from each other, comprising the steps of: temporarily communicating through a throttle at least one gas chamber to at least one remaining gas chamber; and supplying pressurized gas to the at least one remaining gas chamber so as to increase the height of the vehicle.
Claim 2
Independent Claim
79 words
A method of adjusting the height of a vehicle which includes a gas suspension system for adjusting the vehicle height and having a plurality of gas chambers for being communicated with and shut off from each other, comprising the steps of: temporarily communicating through a throttle at least one gas chamber to at least one remaining gas chamber; and supplying pressurized gas to the at least one remaining gas chamber so as to increase the height of the vehicle.
Claim 3
Independent Claim
100 words
A method of adjusting the height of a vehicle which includes a gas suspension for adjusting the vehicle height and having a plurality of gas chambers for being communicated with and shut from each other, comprising the steps of: shutting off temporarily at least one gas chamber from one or more remaining gas chambers; supplying pressurized gas to the one or more remaining gas chambers; and affording communication between said one gas chamber and the one or more remaining gas chambers through a throttle before the vehicle reaches a predetermined height so as to increase the height of said vehicle.
Claim 4
Independent Claim
100 words
A method of adjusting the height of a vehicle which includes a gas suspension for adjusting the vehicle height and having a plurality of gas chambers for being communicated with and shut from each other, comprising the steps of: shutting off temporarily at least one gas chamber from one or more remaining gas chambers; supplying pressurized gas to the one or more remaining gas chambers; and affording communication between said one gas chamber and the one or more remaining gas chambers through a throttle before the vehicle reaches a predetermined height so as to increase the height of said vehicle.
Claim 5
Dependent Claim
23 words
A method of adjusting a vehicle height as claimed in claim 2, wherein said throttling is carried out in a plurality of steps.
Claim 6
Dependent Claim
22 words
A method of adjusting a vehicle height as claimed in claim 2, wherein said throttling is carried out by a single step.
Claim 7
Independent Claim
102 words
A method of adjusting the height of a vehicle which includes an air suspension for adjusting the vehicle height and having first and second air chambers being being communicated with and shut off from each other, comprising the steps of: shutting-off temporarily said first air chamber from the second air chamber; supplying the compressed air to the second air chamber not later than the shutting-off of the first air chamber; and affording communication between said second air chamber and said first air chamber through a throttle before the vehicle reaches a predetermined height so as to increase the height of said vehicle.
Claim 8
Independent Claim
102 words
A method of adjusting the height of a vehicle which includes an air suspension for adjusting the vehicle height and having first and second air chambers being being communicated with and shut off from each other, comprising the steps of: shutting-off temporarily said first air chamber from the second air chamber; supplying the compressed air to the second air chamber not later than the shutting-off of the first air chamber; and affording communication between said second air chamber and said first air chamber through a throttle before the vehicle reaches a predetermined height so as to increase the height of said vehicle.
References Cited (Backward Citations)
US4463969A
Cited
US4469315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |