Land vehicles – Body elevation or tilt – Establishing riding or trim height
Patent
1995-11-13
1997-07-29
Johnson, Brian L.
Land vehicles
Body elevation or tilt
Establishing riding or trim height
280714, 267 6416, 13762521, 13711909, B60G 17056
Patent
active
056515553
ABSTRACT:
A supported structure is leveled against positional variations relative to a supporting structure with a fluid suspension system between the supported structure and the supporting structure. The fluid suspension system has a first fluid leveling valve for adjustment and operation of the supported structure to and at a first level relative to the supporting structure, and is provided with a second fluid leveling valve for adjustment and operation of the supported structure to and at an alternative second level relative to the supporting structure. The supported structure is adjusted with the first fluid leveling valve to the first level relative to the supporting structure. The first level is sensed. The activated first fluid leveling valve is operated in response to the sensed first level to maintain the first level against positional variations. The supported structure is alternatively adjusted with the second fluid leveling valve to the second level relative to the supporting structure. The second level is sensed, and the activated second fluid leveling valve is operated in response to the sensed second level to maintain the second level against positional variations.
REFERENCES:
patent: 2888272 (1959-05-01), Fletcher
patent: 2919931 (1960-01-01), Cislo
patent: 2954987 (1960-10-01), Whelan
patent: 2962297 (1960-11-01), Cislo
patent: 2974675 (1961-03-01), Cislo
patent: 3561479 (1971-02-01), Archer
patent: 5161817 (1992-11-01), Daum et al.
Latif Tariq
Nguyen Mann
O'Reilly Paul Bernard
Barksdale Inc.
English Peter C.
Johnson Brian L.
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