Walking-beam conveyor

Details Walking-beam conveyor Walking-beam conveyor

2011-03-22

2011-03-22

Crawford, Gene (Department: 3651)

Conveyors: power-driven

Conveyor system for moving a specific load as a separate unit

System includes linear conveyor or portion thereof which...

C198S468600, C198S774200

Reexamination Certificate

active

07909158

ABSTRACT:
A walking-beam conveyor has a pair of longitudinally extending, parallel, and transversely spaced fixed support rails, at least one walking beam between and generally parallel to the rails, and at least two lifters underneath the walking beam and operable to raise the walking beam from a return position generally below the rails to a conveying position generally above the rails. In accordance with the invention a first longitudinally extensible hydraulic actuator has opposite longitudinal ends one of which is secured relative to the rails. A second longitudinally extensible hydraulic actuator has opposite longitudinal one of which is secured to the other end of the first actuator and the other of which is secured to the walking beam.

REFERENCES:
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patent: 4236626 (1980-12-01), Noe
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patent: 4865180 (1989-09-01), Brems et al.
patent: 6640963 (2003-11-01), Lecrivain
patent: 1283149 (1968-11-01), None
patent: 29803458 (1998-07-01), None

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