Roller of variable outer diameter type, and carrying apparatus a

Details Roller of variable outer diameter type, and carrying apparatus a Roller of variable outer diameter type, and carrying apparatus a

1993-11-12

1995-04-18

Gastineau, Cheryl L.

Conveyors: power-driven

Conveyor arrangement for selecting among plural sources or...

By loading or unloading section at selected one of a...

198782, B65G 3700

Patent

active

054070546

ABSTRACT:
A roller of variable outer diameter type has a holding member having a plurality of through holes radially along a side surface and provided with a hollow portion communicating with these through holes; a sealing member having diaphragms arranged so as to correspond to the respective through holes; and sliders respectively fitted slidably in the through holes and forming an outer peripheral surface of the roller, the sealing member causing the sliders to urge and displace the sliders via the diaphragms by a fluid supplied thereinto in such a direction that the outer diameter of the roller is enlarged. This roller of variable outer diameter type is mounted on a rotary shaft portion in an apparatus for transferring articles such as a transporting conveyer or the like.

REFERENCES:
patent: 4730718 (1988-03-01), Fazio et al.
patent: 4746003 (1988-05-01), Yu et al.
patent: 4747477 (1988-05-01), Benz et al.
patent: 4962841 (1990-10-01), Kloosterhouse
patent: 5161672 (1992-11-01), Fukuyama

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