Sliding hopper outlet gate with plastic upper surface for smooth

Details Sliding hopper outlet gate with plastic upper surface for smooth Sliding hopper outlet gate with plastic upper surface for smooth

1990-03-08

1991-10-29

Oberleitner, Robert J.

Railway rolling stock

Special car bodies

Dumping

1052922, B61D 720, B61D 722

Patent

active

050605798

ABSTRACT:
A hopper with a bottom discharge slot and valving comprising plates slidably supported beneath the slot and movable between closed and open positions, said plates having a plastic flexible covering to facilitate movement in shear against the load of the particulate material bearing thereagainst.

REFERENCES:
patent: 609816 (1898-08-01), Kramer
patent: 820240 (1906-05-01), Muloch
patent: 1019875 (1912-05-01), Wright
patent: 1360805 (1920-11-01), Sherman et al.
patent: 2043615 (1936-06-01), Hankins
patent: 2915022 (1959-12-01), Dorey
patent: 3446538 (1969-05-01), Danielson
patent: 3635170 (1972-01-01), Chierici
patent: 4344365 (1982-08-01), Fritz et al.
patent: 4429921 (1984-02-01), Fritz et al.

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