US4413837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for adjusting the height of vehicles
Assignee: SHOWA MANUFACTURING Co Ltd
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Filing: 1981-03-04
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Granted: 1983-11-08
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Expires: 2001-03-04
Abstract
Abstract A system for automatically adjusting the height of a vehicle wherein a polarity-determination pattern detector and an allowable-displacement pattern detector are disposed in confronting relation to and movable relative to a pattern plate in parallel directions in response to variations in the height of a vehicle. The pattern plate has a polarity-determination pattern having one end positioned in confronting relation to the polarity-determination pattern detector and extending in a direction of movement of the pattern plate, and an allowable-displacement pattern having a center thereof positioned in confronting relation to the allowable-displacement pattern detector and extending in the direction of movement of the pattern plate. The pattern plate may be provided with a plurality of such polarity-determination and allowable-displacement patterns. An electrical circuit generates a signal indicative of an increase or decrease in the vehicle height depending on whether or not there is an output signal from the polarity-determination pattern detector when there is no output signal from the allowable-displacement pattern detector for a predetermined interval of time. With such an arrangement, the vehicle height can automatically be adjusted even while the vehicle is running.
Inventors
- 👤 Yasuyuki Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:26
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/015; B60G17/019; B60G17/01933
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
205 words
A device for adjusting the height of a vehicle, comprising: a slidable pattern plate; at least one each of a polarity-determination and allowable-displacement pattern on said slidable pattern plate, said pattern and pattern plate including through slots; at least one each of a polarity-determination and allowable-displacement pattern on said slidable pattern plate; means movable relative to said pattern plate in parallel relation in response to a change in the vehicle height for detecting said polarity-determination pattern in confronting relation; means movable relative to said pattern plate in parallel relation in response to a change in the vehicle height for detecting said allowable-displacement pattern in confronting relation, said polarity-determination pattern having one end thereof normally positioned in confronting relation to said polarity-determination pattern detecting means and extending in a direction of movement of the pattern, and said allowable-displacement pattern having a center thereof normally positioned in confronting relation to said allowable-displacement pattern detecting means and extending in a direction of movement of the pattern; and an electrical circuit for producing a signal indicative of an increase or reduction in the vehicle height depending on whether or not said polarity-determination pattern detecting means produces an output signal when said allowable-displacement pattern detecting means produces no output signal.
Claim 2
Independent Claim
205 words
A device for adjusting the height of a vehicle, comprising: a slidable pattern plate; at least one each of a polarity-determination and allowable-displacement pattern on said slidable pattern plate, said pattern and pattern plate including through slots; at least one each of a polarity-determination and allowable-displacement pattern on said slidable pattern plate; means movable relative to said pattern plate in parallel relation in response to a change in the vehicle height for detecting said polarity-determination pattern in confronting relation; means movable relative to said pattern plate in parallel relation in response to a change in the vehicle height for detecting said allowable-displacement pattern in confronting relation, said polarity-determination pattern having one end thereof normally positioned in confronting relation to said polarity-determination pattern detecting means and extending in a direction of movement of the pattern, and said allowable-displacement pattern having a center thereof normally positioned in confronting relation to said allowable-displacement pattern detecting means and extending in a direction of movement of the pattern; and an electrical circuit for producing a signal indicative of an increase or reduction in the vehicle height depending on whether or not said polarity-determination pattern detecting means produces an output signal when said allowable-displacement pattern detecting means produces no output signal.
Claim 3
Dependent Claim
13 words
A device according to claim 1, said detecting means comprising photoelectric elements, respectively.
Claim 4
Dependent Claim
22 words
A device according to claim 1, said detecting means comprising magnetic-flux detecting elements, respectively, and said patterns being formed of magnetic material.
Claim 5
Dependent Claim
19 words
A device according to claim 1, said electrical circuit being de-energizable in response to operation of vehicle supporting legs.
Claim 6
Dependent Claim
139 words
A device according to claim 1, said electrical circuit comprising a differentiator receptive of a signal serving as a threshold level obtained by shaping an output signal from said polarity-determination pattern detecting means, an AND gate to which are applied the inverted signal of said first-mentioned signal and the inverted signal of an output signal from said allowable-displacement pattern detecting means, a NOR gate to which are applied the inverted signal of said first-mentioned signal and said output signal from said allowable-displacement pattern detecting means, a first integrator for integrating signals from said differentiator and said AND gate, and a second integrator for integrating signals from said differentiator and said NOR gate, the arrangement being such that gas is introduced into or discharged from a hydraulic shock absorber for vehicle suspension when results of integration exceed a predetermined level.
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) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |