The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2018
Filed:
Feb. 19, 2016
Thomas Walker Hengst, Dallas, TX (US);
Thomas Walker Hengst, Dallas, TX (US);
Bruce McLellan, Round Rock, TX (US);
Other;
Abstract
A system and method for simultaneously cleaning riser and step portions of movable stairs in an escalator is disclosed. The system includes a frame comprising a set of guide arms, a set of first service systems movably connected to the frame, and a set of second service systems removably mounted to the frame. The first service system includes a set of interchangeable servicing units. The set of second service systems is optionally interchangeable. The method including the steps of engaging the set of second service systems with each movable stair of the set of movable stairs and simultaneously engaging the set of first service systems with a riser portion of each movable stair of the set of movable stairs and a step portion of each movable stair of the set of movable stairs.