Lifting and steering system for a vehicle and a vehicle using the same
AssigneeFMC Corporation
InventorFranklin P. Orlando
Life of this patent
Estimating the term…
Abstract
The present invention refers to a lifting and steering system for a vehicle. The system comprises a hydraulic system having a piston with a rod in the form of another inner cylinder, the lower end of which serves for mounting a steerable wheel of the vehicle. Another rod projects through the upper end of the hydraulic cylinder and its lower end projects through the piston to the interior of the inner cylinder. A guide member is provided for permitting relative axial movement between the piston and the second mentioned rod while causing rotation therebetween. Passages are also provided to permit the introduction and withdrawal of hydraulic fluid from the space above the piston, to the space within the interior of the inner cylinder.
Claims14
Lifting and steering system for a vehicle, characterized by comprising a main cylinder having a first closed end, a piston slidably and rotatably received within the cylinder to define a pressure chamber between said piston and said first end of the cylinder, means for introducing and withdrawing pressure fluid from the said pressure chamber, piston rod means fixed to said piston ahd having one end projected through the other end of the cylinder, piston rotation means having one end projected through the said first closed end of the cylinder, and means being provided to prevent relative rotation and yet allow axial movement between said piston rotation means and the piston itself.
Vehicle provided with a steering control for the front wheels and a lifting system for raising and lowering the vehicle with respect to the front wheels, characterized in that said steering control is connected to each front wheel through a combined lifting and steering system comprising a main cylinder having a first closed end, a piston slidably and rotatably received within the cylinder to define a pressure chamber between said piston and said first end of the cylinder,
- means for introducing and withdrawing pressure fluid from the said pressure chamber,
- piston rod means affixed to said piston and having one end projected through the other end of the cylinder,
- piston rotating means having one end projected through the first closed end of the cylinder, and means for preventing a relative rotation between the piston rotating means and said piston.
Dependencies are inferred from the claim text.