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US 5,664,930 AGranted
Vehicle activated wheel chock positioning device
AssigneeRite-Hite Corporation
InventorElwood B. Ellis
Life of this patent
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AssigneeRite-Hite Corporation
InventorElwood B. Ellis
Estimating the term…
A system for loading and unloading a vehicle, including: a vehicle actuated wheel chock positioning device for at least one tire of such a vehicle which is rotatable on a treadway between an initial position and a plurality of operating positions, the chock positioning device including a mechanism engageable by such tire at the initial position and movable with the tire as it rolls on the treadway, a chock positionable behind the tire when the mechanism is in any of the operating positions in response to engagement of the mechanism by the rolling tire, and a controllable lock capable of selectively locking the chock in a chock position behind the tire corresponding to one of the operating positions, the system, in one preferred embodiment further including a leveling ramp carrying the chock positioning device with the ability vertically position the device and a vehicle chocked thereby to a selectable vertical position.
An automatic vehicle actuated wheel chocking device for at least one tire of a vehicle which is rotatable on a treadway between an initial position and a plurality of operating positions, the chocking device comprising an engaging mechanism for initially engaging a tire at the initial position and movable to operating positions with the tire as it rolls on the treadway, a chock operably attached to the engaging mechanism and positionable behind the tire when the mechanism is in any of the operating positions in response to engagement of the mechanism by the rolling tire, and a controllable lock capable of selectively locking the chock in a chock position behind the tire corresponding to any one of the operating positions.
An automatic vehicle actuated wheel chocking device for at least one tire of a vehicle which is rotatable on a treadway between an initial position and a plurality of operating positions, the chocking device comprising an engaging mechanism for initially engaging a tire at the initial position and movable to operating positions with the tire as it rolls on the treadway, a chock positionable behind the tire when the mechanism is in any of the operating positions in response to engagement of the mechanism by the rolling tire, a dolly pivotally receiving the chock and connecting the engaging mechanism and the chock to move them together in response to the movement of the tire along the treadway, a controllable lock capable of selectively locking the chock in a chock position behind the tire corresponding to any one of the operating positions.
Dependencies are inferred from the claim text.