Conveyors: power-driven – Conveyor section – Live roll
Patent
1988-02-11
1989-04-11
Spar, Robert J.
Conveyors: power-driven
Conveyor section
Live roll
188 75, 198854, 198857, B65G 1306
Patent
active
048197882
ABSTRACT:
A live roller zero pressure accumulation conveyor and brake assembly are described. The brake assembly includes a rotatable drive shaft surrounded by a tubular torque tube. The drive shaft extends into the torque tube and has a diameter such that the cylindrical surface of the drive shaft is capable of frictionally engaging the interior of the torque tube to rotate the torque tube when the drive shaft is rotated, but to slip relative to the torque tube when rotation of the torque tube is restrained. Clamping members surround the torque tube and are movable relative to the exterior surface of the torque tube between a first position in which the clamping surfaces are moved out of contact with the torque tube and the rotating drive shaft rotates the torque tube, and a second position in which the clamping surfaces move into contact with the exterior of the torque tube to restrain the torque tube from rotating with the drive shaft.
REFERENCES:
patent: 2531913 (1950-11-01), Kaim
patent: 3465850 (1969-09-01), Sexton
patent: 3650375 (1972-03-01), Fleischauer et al.
patent: 3696912 (1972-10-01), Fleischauer et al.
patent: 3840110 (1974-10-01), Molt et al.
patent: 4355715 (1982-10-01), Chorlton
patent: 4372442 (1983-02-01), Fleischauer
Ermanco Incorporated
Gastineau Cheryl L.
Spar Robert J.
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