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US 4,144,978 AGranted
Suspension systems for vehicles
AssigneeCoventry Climax Limited
InventorRonald Drake
Life of this patent
Estimating the term…
Abstract
An industrial truck has at least one axle with a road wheel mounted on each end. Each end of the axle is coupled to a sub-frame which is in turn coupled to the truck chassis by a main suspension spring and by an elastomeric spring. The sub-frame at one end of the axle is coupled to the axle by a pivot. The sub-frame at the other end of the axle is coupled to the axle by way of a strut whose length can be controllably varied.
Claims9
A vehicle having a suspension system for a chassis of the vehicle, the vehicle having at least one axle and a ground engaging wheel at each end of the axle, comprising a suspension unit having:
- (1) a sub-frame for each end of the axle;
- the sub-frame associated with one end of the axle being coupled to the axle by a pivotable connection;
- the sub-frame associated with the other end of the axle being coupled to the axle by way of a strut whose length can be varied;
- (2) a main suspension spring resiliently coupling each sub-frame to the chassis;
- and
- (3) an elastomeric spring interposed between each sub-frame and the chassis.
3 more elements
Dependencies are inferred from the claim text.