Wheeled trolley frame

Details Wheeled trolley frame Wheeled trolley frame

B - Operations, Transporting

62

B

280/8

B62B 5/02 (2006.01)

Patent

CA 1228378

- 1 - ABSTRACT A wheeled trolley frame for use on an escalator. The frame has two ends and two pairs of ground engaging wheels respectively positioned one pair adjacent each frame end and spaced apart so that both pairs of wheels cannot sit on a single escalator step tread. First and second escalator tread engaging means on the frame respectively positioned adjacent the wheel pairs and intermediate the wheel pairs. The tread engaging means are spaced apart so that they cannot both rest on the same escalator tread and lie above ground level and are spaced therefrom by a distance such that they will when the trolley frame is mounted on a formed escalator engage on two treads of the escalator and maintain the wheels adjacent the tread engaging means elevated from the escalator step treads.

463828

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