Roller conveyor having an expandable and contractible flexible b

Details Roller conveyor having an expandable and contractible flexible b Roller conveyor having an expandable and contractible flexible b

1993-02-11

1994-03-01

Gastineau, Cheryl L.

Conveyors: power-driven

Conveyor section

Live roll

198789, B65G 1306

Patent

active

052899136

ABSTRACT:
A roller conveyor comprising a driven section (18) freely rotatably mounted on one end of a roller shaft (16) a sleeve member freely rotatably mounted on the same one end through a bearing device (31), a roller body (24) freely rotatably fitted on the driven section (18) and the other end of the roller shaft (16), the sleeve member (19) being provided with a flexible body (26) adapted to contact the inner surface (24a) of the roller body (24) when contracted and to press against the inner surface (24a) and driven section (18) when expanded, and a fluid feed and delivery passage which opens to the interior of the flexible body (26) and which extends from the roller shaft 16 to the sleeve member (19). Thus, when the flexible body is expanded to press against the inner surface of the roller body and the driven section, the torque in the driven section can be transmitted to the roller body through the flexible body, thereby causing the forced rotation of the roller body. When the pressure in the flexible body is released, the flexible body is contracted to contact the inner surface of the roller. Since the sum of the frictional resistance of the seal device and the contact resistance of the flexible body is high, the roller body can be made integral with the roller shaft and its rotation can be completely stopped.

REFERENCES:
patent: 4815588 (1989-03-01), Katsuragi
patent: 5080219 (1992-01-01), Imai et al.
patent: 5090558 (1992-02-01), Hatouchi
patent: 5129507 (1992-07-01), Maeda et al.
patent: 5161672 (1992-11-01), Fukuyama

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