Conveyors: power-driven – Conveyor section – Reciprocating conveying surface
Patent
1981-05-26
1984-07-10
Spar, Robert J.
Conveyors: power-driven
Conveyor section
Reciprocating conveying surface
414749, B65G 2500
Patent
active
044588089
ABSTRACT:
A shuttle table utilizing a plurality of interleaved overlapping chain strands includes a fixed frame, a longitudinally extending intermediate stage coupled to the fixed frame and a longitudinally extending, load carrying, upper table slidingly coupled to the intermediate stage. A pair of sprocket assemblies are attached to the fixed frame, one near each of the opposite ends of the intermediate stage. The drive chain mechanism includes 2N+1 chain strands coupled between the frame and the intermediate stage. One end of each of N+1 of the chain strands is connected near one end of the intermediate stage and one end of the remaining N chain strands is connected near the opposite end of the intermediate stage. Each of the N+1 and N chain strands is positioned about the distant sprocket assembly and the remaining ends of the N+1 chain strands and the N chain strands are connected together by a coupler or transition stage. The transition stage is formed by the interleaved overlapping of the N and N+1 chain strands, whereby each of the strands is maintained parallel to one another and to the longitudinal center-line of the intermediate stage.
REFERENCES:
patent: 1665808 (1928-04-01), Dow
patent: 2817447 (1957-12-01), Bianca
patent: 3307713 (1967-03-01), Bopp
patent: 3848754 (1974-11-01), Bryntse
patent: 3892324 (1975-07-01), Faletti
patent: 4156331 (1979-05-01), Lester et al.
Holmes Jonathan D.
Spar Robert J.
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