Self-locking chocks for a semi-trailer

Details Self-locking chocks for a semi-trailer Self-locking chocks for a semi-trailer

1984-12-12

1987-06-30

Reger, Duane A.

Brakes

Vehicle

On ground

188 4R, B60T 114

Patent

active

046763449

ABSTRACT:
Disclosed is an automatically self-locking chock for semi-trailers parked in a truck loading yard having: A freely movable dolly platform above a load support member; at least one pair of pivoted chock plates at a distance from the platform such that the dolly support for the forward end of the trailer will rest on the platform when the chock plates are positioned next to the wheels of the trailer; a lever member connecting the platform to the chock plates, constructed such that when the platform carries a load and is pressed against the load support member the chock plates are pivoted upward against the treads of the trailer wheels by mechanical magnification of the downward movement of the platform; and a positioning member for holding the lever member, when the platform is unloaded, in a position such that the chock plates are parallel to and approximately in the plane of the roadbed on which the trailer rests and the dolly platform is positioned above and away from the load support member.

REFERENCES:
patent: 2585126 (1952-02-01), Holland
patent: 3425517 (1969-02-01), Speir

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