Air bearing wheel lift
AssigneeMcDonnell Douglas Corporation
InventorsVernon E. Burgardt, Mel D. Terry
Life of this patent
Estimating the term…
Abstract
A wheel lift for lifting multi-wheeled vehicles. A wheel lift is applied at each wheel and has a generally U-shaped base supported by an air bearing under each arm. A pair of adjustable chocks engage the wheel near the floor. Either a hook engages the wheel generally opposite the chocks or for application of the device on the inboard side of the wheel, a support member picks up the vehicle structure to resist any overturning moment and provide stability.
Claims14
A wheel lift supported by air bearings for moving multi-wheeled vehicles by lifting the vehicles at the wheels, comprising:
- a base having a pair of generally parallel arms connected by cross structure;
- facing surfaces, located in each of said arms, shaped to generally wedge against said wheel to be lifted and thereby form opposing chocks, at least one of which is adjustable within said arm so as to change the distance between said chocks;
- means to adjust and maintain said adjustable chocks in engagement with said wheel to be lifted;
- an air bearing under each of said arms so as to provide a two air bearing support;
- and
- means connecting said wheel lift to said multi-wheeled vehicle to resist any over-turning moment produced by said two air bearing support, whereby stabilizing said wheel lift.
A wheel lift, supported by air bearings, for moving multi-wheeled vehicles by lifting the vehicles, from the outboard side, at the wheels comprising:
- a base having a pair of generally parallel arms connected by cross structure so as to form a generally U-shape;
- a pair of opposing chocks attached to each of said arms so that said chocks face each other, having facing surfaces shaped to generally wedge against said wheel to be lifted and at least one of said chocks adjustable so as to change the distance between said chocks so as to engage said wheel;
- a vertical arm attached to said cross structure, generally intermediate said parallel arms;
- a hook pivotally attached to the upper end of said vertical arm so that said hook can grasp said wheel to be lifted generally opposite said chocks;
- and
- an air bearing under each of said arms so as to provide a two air bearing support.
A wheel lift, supported by air bearings, for moving multi-wheeled vehicles by lifting the vehicles from the inboard side, at the wheels, comprising;
- a base having a pair of generally parallel arms connected by cross structure so as to form a generally U-shape;
- a pair of opposing chocks attached to each of said arms so that said chocks face each other, having surfaces shaped to generally wedge against said wheel to be lifted and at least one of said chocks adjustable so as to change the distance between said chocks so as to engage said wheel to be lifted;
- an inboard support attached to said cross structure which engages fixed structure of said vehicle so as to resist any over-turning moment;
- and
- an air bearing under each of said arms so as to provide a two air bearing support.
Dependencies are inferred from the claim text.