Land vehicles – Skates – Ball type roller skates
Patent
1994-01-07
1995-09-05
Butler, Douglas C.
Land vehicles
Skates
Ball type roller skates
180 41, 280 612, 280714, B60S 900
Patent
active
054473314
ABSTRACT:
A suspension system for utility vehicles of the type in which the chassis is supported at one end on an oscillating axle with a central pivot, has the oscillation of this axle controlled by one or two extensible links each in the form of a hydraulic cylinder unit. The second vehicle axle has limited oscillation used to shuttle the spool of a directional control valve which determines the flow of pressurized fluid for operation of the hydraulic cylinder units(s). The control valve can also be electrically operated responsive to the closing of switches responsive to the oscillations of the second axle.
REFERENCES:
patent: 4382604 (1983-05-01), Nakagawa
patent: 5176391 (1993-01-01), Schneider et al.
patent: 5344189 (1994-09-01), Tanaka et al.
Butler Douglas C.
Genie Industries Inc.
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