Step for escalator
US6978876B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2000 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Dec 27, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B23/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.