Motor vehicles – Special wheel base – Having only two wheels
Patent
1990-11-13
1992-04-07
Hill, Mitchell J.
Motor vehicles
Special wheel base
Having only two wheels
280707, 280840, B60G 1700, B62J 3900, B62K 1100
Patent
active
051019230
ABSTRACT:
A motorcycle is provided with a body height adjustor capable of adjusting the body height of the motorcycle by changing lengths of front suspensions and a rear cushion unit. The body height adjustor includes a first hydraulic jack for extending and retracting the front suspensions, a second hydraulic jack for extending and retracting the rear cushion unit and a body height adjusting unit to transmit hydraulic pressure of hydraulic fluid in the rear cushion unit to the first and second hydraulic jacks through hydraulic hoses. The rear cushion unit is provided with a rear oil damper and a coil spring against which the second hydraulic jack abuts and the initial load of the coil spring is changed by the hydraulic pressure in the rear cushion unit. The second hydraulic jack is movable in a direction towards the coil spring with respect to the rear oil damper to change the initial load of the spring. The first hydraulic jack is provided with a cylinder chamber, a piston incorporated in the cylinder chamber and a spring disposed between an end portion of the cylinder chamber and the piston so as to urge the piston in a direction opposite to a direction of hydraulic pressure.
REFERENCES:
patent: 4212484 (1980-07-01), Fujii
patent: 4422661 (1983-12-01), Kawamura
patent: 4568101 (1988-02-01), Bleustein et al.
patent: 4815758 (1989-03-01), Yoshida
Kasuya Taiji
Matsumoto Masayoshi
Odagi Shigeru
Shirasagi Sadao
Tokunaga Katsuhiko
Adams Bruce L.
Hill Mitchell J.
Suzuki Kabushiki Kaisha
Wilks Van C.
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