Conveyors – chutes – skids – guides – and ways – Rollerways – Submerging and rising
Patent
1978-05-03
1980-06-03
Rowland, James L.
Conveyors, chutes, skids, guides, and ways
Rollerways
Submerging and rising
104135, 193 35SS, B65G 1300
Patent
active
042057400
ABSTRACT:
A gravity-type roller conveyor having plural rollers mounted on an elongated support member which is movably positioned within an elongated frame member. The upper edges of the frame member have sidewardly extending flanges which define braking surfaces. An elongated hose is positioned in the bottom of the frame member and, when inflated, causes the support member and rollers to raise upwardly so that the rollers project above the braking surfaces. The hose, when at least partially deflated, causes the support member to move downwardly so that the rollers are positioned below the braking surfaces, whereby the articles supported on the rollers are lowered into engagement with the braking surfaces. A control device provides pressurized air to the hose in a pulsating manner to cause periodic raising and lowering of the rollers for controlling movement of the articles. Centering flanges, preferably fixed to the outer edges of the brake flanges, project outwardly and upwardly in an inclined relationship so that if the article moves sidewardly while being advanced along the rollers, then lowering of the article causes it to contact the centering flange and be shifted sidewardly so as to be recentered.
REFERENCES:
patent: 1467293 (1923-09-01), Matheson
patent: 2572325 (1951-10-01), Ernst
patent: 2979177 (1961-04-01), Sullivan
patent: 3010409 (1961-11-01), De Good et al.
patent: 3011665 (1961-12-01), Wise
patent: 3108671 (1963-10-01), Fuka et al.
patent: 3130829 (1964-04-01), Long
patent: 3456776 (1969-07-01), Viene
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