Land vehicles – Skates – Ball type roller skates
Patent
1987-02-04
1989-03-28
Mitchell, David M.
Land vehicles
Skates
Ball type roller skates
280702, 280714, 280DIG1, B60G 1904, B60G 2106
Patent
active
048157511
ABSTRACT:
A level and inclination regulating arrangement for a vehicle includes a compressor having an inlet chamber and an outlet chamber. At least two pneumatic or hydropneumatic resilient elements are each associated with one wheel of an axle of the vehicle and include a movable separating piston which is acted upon at one side by the wheel load, and a housing confining a gas cushion which exerts pneumatic pressure on and supports the separating piston at the other side. Supply and discharge conduits connect each of the gas cushions with the outlet chamber and with the inlet chamber of the compressor, respectively. An accumulator is incorporated into at least one of the supply and discharge conduits which communicates with the respective one of the outlet and inlet chambers. Position regulating elements are respectively associated with the resilient elements and are operative for detecting the position of the separating piston with respect to a desired position and for controlling the discharge of gas from the respective gas cushion into the discharge conduit and the supply of gas from the supply conduit into the respective gas cushion in dependence on the deviation of the respective separating piston from its desired position. A control valve selectively connects the accumulator with and disconnects the same from the connection through the respective one of the supply and discharge conduits.
REFERENCES:
patent: 2687311 (1954-08-01), Nallinger
patent: 2882068 (1959-04-01), Faiver
patent: 2969990 (1961-01-01), Szostak
patent: 3038739 (1962-06-01), Vogel
patent: 4593920 (1986-06-01), Natsume et al.
patent: 4702490 (1987-10-01), Yamaguchi et al.
Ferriter Karin L.
Mitchell David M.
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