Lifting device with a higher speed in the downward movement area

Details Lifting device with a higher speed in the downward movement area Lifting device with a higher speed in the downward movement area

1987-06-18

1988-10-25

Valenza, Joseph E.

Conveyors: power-driven

Conveyor section

Endless conveyor

1984686, 198509, 198701, 210154, 187119, 187120, B65G 2500

Patent

active

047797193

ABSTRACT:
Lifting device with a higher speed in the downward movement area than in the upward movement area, equipped with a driving motor with brake, a gear and a load pick-up system, which runs on an oval or circular or loop-shaped race via a lower and an upper reversion device and which takes up the load in the lower area and delivers it in the upper area. A driving motor is used whose characteristic of torque versus rotation runs relatively flat and whose number of rotations in the downward movement area is in the ratio of at least 1.5:1 compared to the number of rotations in the upward movement area.

REFERENCES:
patent: 1103616 (1914-07-01), Noelle
patent: 1906036 (1933-04-01), Wunderlich
patent: 2670957 (1954-03-01), Ernst
patent: 3131801 (1964-05-01), Marchetti
patent: 4265360 (1981-05-01), Khodos
Kummel, Fritz, "Elektrische Antriebstechnik", Diagram 1.17, and text, (1971).
Hutte, "Electrotechnik", p. 284 (1957).
Elektro-Anzeiger, No. 16, Aug. 25, 1965, p. 35.

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