Trunks and hand-carried luggage – Trunks – Tray movers and supporters
Patent
1990-05-30
1991-11-05
Valenza, Joseph E.
Trunks and hand-carried luggage
Trunks
Tray movers and supporters
B66B 2312
Patent
active
050625195
ABSTRACT:
An escalator system comprising a main frame (1) defining a circulating loop path (2) therein, a plurality of steps (3,4,5,6) connected in an endless step loop disposed in the loop path and a special convertible step unit (4,5,6) disposed in the step loop and having a movable member (4a,11). The special step unit defines at least one of the steps with the movable member in an ordinary position in an ordinary operating mode, and the step unit defining a special step having a broad tread surface with the movable member displaced in a broad step position in a special operating mode. A displacement mechanism (45,46,13) having one end engageable with the special step unit (7) is disposed for displacing the movable member of the special step unit between the ordinary position and the broad step position by a drive force of the step loop which is a drive force component in the direction of width of the step. The other end of the displacement mechanism is engageable with a guide rail (27) only in the special operating mode for moving the displacement mechanism in the step width direction by a camming action of the guide rail.
REFERENCES:
patent: 4557369 (1985-12-01), Ishida et al.
patent: 4681207 (1987-07-01), Goto et al.
patent: 4863006 (1989-09-01), Kotkata et al.
Dixon Keith
Mitsubishi Denki & Kabushiki Kaisha
Valenza Joseph E.
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