A - Human Necessities – 47 – L
Patent
A - Human Necessities
47
L
15/38.4
A47L 11/00 (2006.01) B08B 1/04 (2006.01) B66B 31/00 (2006.01)
Patent
CA 1254355
ABSTRACT OF THE DISCLOSURE A method for cleaning the step boards of an escalator and an apparatus for carrying out the method. The apparatus comprises a holding unit to be placed fixedly at the entrance or at the exit of an escalator, a cleaning unit having a driving means, a power transmitting system and rotary brushes, and mounted on the holding unit so as to be shiftable widthwise of the escalator, and a pressing means to press the cleaning unit so that the rotary brushes are pressed against the step board of the escalator. Each rotary brush is furnished with a plurality of rows of bristle groups extending helically over the circumference of the cylindrical body thereof, and the individual bris- tles of each row of the bristle group are inclined both at an angle with respect to the axial direction of the cylin- drical body and at an angle with respect to the radial direction of the cylindrical body. The directions of in- clination of the bristles of each bristle group with re- spect to the axial direction of the cylindrical body and with respect to the radial direction of the cylindrical body are opposite to the corresponding directions of incli- nation of bristles of the adjacent bristle groups respec- tively, so that the bristles are able to brush the surface of the step boards, the side surfaces of the cleats of the step boards and the bottom of grooves between the cleats when the rotary brushes are rotated.
480530
Marks & Clerk
Meiso Yoko Co. Ltd.
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