B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 90/66 (2006.01) B60P 1/56 (2006.01) B61D 7/20 (2006.01) B65D 90/58 (2006.01)
Patent
CA 2261522
A trap closure device for opening and closing a discharge opening of a hopper on a trailer or vehicle. The closure device includes a generally rectangular frame assembly which supports a horizontally sliding door assembly on plastic type rollers as the door travels to open and close the discharge opening at one end of the frame assembly. An operating shaft assembly is supported above the sliding door assembly near the other end of the frame assembly to provide increased ground clearance. The door assembly has a slightly inclined top surface that opens away from the discharge opening and thus reduces friction when opening the device. The shaft assembly includes a single shaft attached to front and rear straps that forcibly pull open the door assembly when the shaft is rotated in one direction and forcibly pull close the door assembly when the shaft is rotated in the opposite direction.
Ridout & Maybee Llp
Wilson Trailer Company
LandOfFree
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