Conveyors: power-driven – Conveyor section – Pusher conveyor and separate load support surface
Reexamination Certificate
2007-09-11
2007-09-11
Bidwell, James R. (Department: 3651)
Conveyors: power-driven
Conveyor section
Pusher conveyor and separate load support surface
C198S733000
Reexamination Certificate
active
11459401
ABSTRACT:
An improved cable conveyor system in which buttons provided for pushing the conveyed material are fitted with bearings to relieve the cable of torsional stresses. As a cable is tensioned, torsional stresses are incurred, tending to unwind the braided wire. By providing an opportunity for the cable to unwind, stretching may be carried out without the usual unrelieved torsional stresses.
REFERENCES:
patent: 3586155 (1971-06-01), Turretine et al.
patent: 4071136 (1978-01-01), Jones
patent: 4195725 (1980-04-01), Jones
patent: 4391361 (1983-07-01), Hall
patent: 4962847 (1990-10-01), Pisors et al.
patent: 5318168 (1994-06-01), Rappen
patent: 3707990 (1988-01-01), None
Pages 64, 66, 69, 70, 85, 146 and 164—also pp. 1 and 2 to show the publication is Wire Rope Users Manual, Third Edition dated 1993.
Van Zee Larry J
Williams Millard M
Intraco, Inc.
Sturm & Fix LLP
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