Receptacles – Closures – Superposed closures for common opening
Patent
1978-03-06
1979-10-16
Hall, George T.
Receptacles
Closures
Superposed closures for common opening
105377, B65D 5118
Patent
active
041710614
ABSTRACT:
A closure including a rigid thermoplastic member with a horizontally extending first portion occupying a major portion of the cross-sectional area within the loading aperture which is surrounded by the loading member of the hopper car, a second portion extending upwardly from the first portion which is inwardly adjacent of the interior of the loading member and a third portion extending outwardly from the second portion and overlaying the top of the loading member and underlaying the hatch cover of the hopper car when the hatch cover is in its closed position. Also a flexible plastic member overlaying the rigid thermoplastic member and the loading member and underlaying the hatch cover when the hatch cover is in its closed position.
REFERENCES:
patent: 2104540 (1938-01-01), Hoffman
patent: 3570703 (1971-03-01), MacRae
Burroughs Harold R.
Jordan Vernon J.
Martin Willie E.
Allied Chemical Corporation
Doernberg Alan M.
Friedenson Jay P.
Hall George T.
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