Step for escalator

Details Step for escalator Step for escalator

2005-12-27

2005-12-27

Tran, Khoi H. (Department: 3651)

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

Reexamination Certificate

active

06978876

ABSTRACT:
An escalator step riser is improved by adding grooves to the cleat surfaces, and, at the same time, a skid-inhibiting function is realized at the rear edge of the step. For escalator step (1), cleats (5a) are formed with a pitch twice that of tread (4) on riser (3). On each cleat (5a) of the riser (3), one or more grooves (6) are formed in the longitudinal direction. In addition, skid-inhibiting surface (7), made of synthetic resin and having a prescribed width, is attached in a quick connecting/disconnecting manner on the rear edge of step (2). A serrated irregular portion (7c) is formed on the upper surface of cleats (7a), (7b) of the non-slip surface (7).

REFERENCES:
patent: 4984672 (1991-01-01), Saito et al.
patent: 4984673 (1991-01-01), Saito et al.
patent: 5337879 (1994-08-01), Fischer
patent: 5350049 (1994-09-01), Ahls et al.
patent: 5441140 (1995-08-01), Reid
patent: 5560468 (1996-10-01), Inoue
patent: 5785167 (1998-07-01), Rugg
patent: 5810148 (1998-09-01), Schoeneweiss
patent: 5950267 (1999-09-01), Ricci, Jr.

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