Pantograph lifting ramps particularly for motor vehicles
OwnerEride Rossatoinventor
Life of this patent
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Abstract
A pantograph lifting ramp for motor vehicles includes a pair of wheel guides supported by at least two pairs of columns, which are pivoted at their lower ends to two base frames. The columns of at least one pair have their lower ends connected through a torsion bar consisting of connectable sections. The lifting ramp includes a safety valve to prevent uncontrolled descent in case of failure of the hydraulic fluid system, and another safety device to arrest lowering of the lifting ramp if a worker's foot is accidentally placed between the base frame and a column or wheel guide during lowering of the ramp.
Claims13
A lifting ramp for motor vehicles comprising a pair of spaced base frames adapted to rest on a floor, a pair of vehicle wheel guides adpated to be raised and lowered relative to the base frames, pairs of columns pivotally connected with their lower ends to the base frames and with their upper ends to the wheel guides, a torsion bar connecting the lower ends of at least one pair of said columns, means to connect the base frames to one another, and power means to raise and lower the wheel guides and columns relative to the base frames.
A lifting ramp for motor vehicles comprising a pair of spaced base frames adapted to rest on a floor, a pair of vehicle wheel guides adapted to be raised and lowered relative to the base frames, pairs of columns pivotally connected with their lower ends to the base frames and with their upper ends to the wheel guides, a torsion bar connecting the lower ends of at least one pair of said columns, means to connect the base frames to one another, and power means to raise and lower the wheel guides and columns relative to the base frames, each of the wheel guides having a longitudinal opening in its rear portion and at least a plate movably mounted within said opening substantially flush with the top face of the wheel guide and being free to move in a plane parallel with the top face of the wheel guide, means to lock said plate against movement relative to the wheel guide, and a manual operating lever for said means to lock said plate on each wheel guide of the lifting ramp.
Dependencies are inferred from the claim text.