Conveyors: power-driven – Conveyor section – Reciprocating conveying surface
Reexamination Certificate
2007-12-19
2009-10-20
Bidwell, James R (Department: 3651)
Conveyors: power-driven
Conveyor section
Reciprocating conveying surface
C198S750300, C414S525100
Reexamination Certificate
active
07604109
ABSTRACT:
A trailer (T) and a dock (D) are provided with substantially identical slat conveyors (10, 12). Each conveyor (10, 12) has alternating conveyor slats (36, 36′) and lifting/holding slats (38, 38′). The trailer (T) is backed up to the dock (D). Upper portions of the lifting/holding slats (38, 38′) are coupled together at their ends. The confronting ends of the conveying slats (36, 36′) are also coupled together. A mechanism carried by the dock (D) raises and lowers the upper portions of the two sets of lifting/holding slats (38, 38′) a drive mechanism carried by the dock (D) where it reciprocates both sets of conveying slats (36, 36′).
REFERENCES:
patent: 3534875 (1970-10-01), Hallstrom, Jr.
patent: 4184587 (1980-01-01), Hallstrom
patent: 5325957 (1994-07-01), Wilkens
patent: 5588522 (1996-12-01), Foster et al.
patent: 5911555 (1999-06-01), Foster
patent: 6065923 (2000-05-01), Foster
patent: 6439375 (2002-08-01), Foster et al.
patent: 7398873 (2008-07-01), Foster et al.
Cook John Scott
Foster Raymond Keith
Foster, legal representative Randall Mark
Barnard Delbert J.
Bidwell James R
Keith Manufacturing Co.
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