Dispensing – With flow controller or closure – Reciprocatory
Reexamination Certificate
2004-03-09
2009-06-02
Ngo, Lien T (Department: 3754)
Dispensing
With flow controller or closure
Reciprocatory
C222S625000, C105S282300, C160S037000
Reexamination Certificate
active
07540398
ABSTRACT:
A gate assembly for a hopper of a transport vehicle has an open position in which the gate lies substantially in a vertical plane adjacent to the hopper wall and a closed position in which the gate lies substantially in a horizontal plane. The gate moves longitudinally in guides between the two planes. Several gates can be located adjacent to one another to retain or discharge particulate material in several hoppers separated by partition walls.
REFERENCES:
patent: 3241730 (1966-03-01), Dorey
patent: 3631812 (1972-01-01), Winslow, Jr.
patent: 4094254 (1978-06-01), Koranda
patent: 4951992 (1990-08-01), Hockney
patent: 5288017 (1994-02-01), Halovitz
patent: 5443300 (1995-08-01), Mohammed
patent: 5447187 (1995-09-01), Gustafson
patent: 2003/0173040 (2003-09-01), Court et al.
Ngo Lien T
Schnurr Daryl W.
Walinga Inc.
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