Tread member for escalator or travelling road
US4984672A · kind A · utility
9Cited by
6References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1989 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Sep 19, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B23/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A passenger conveyance tread member, which may be for an escalator or a travelling road, has a tread surface with lateral edges having surfaces which slope towards skirt guards adjacent the lateral edges. The sloping surfaces and skirt guards define a downwardly narrowing gap so that the tendency of e.g. shoes to get seriously stuck in the gap is reduced. The sloping surface may be on a side-most cleat of the tread. An existing conveyance may be adapted by providing its tread members with such sloping surfaces at their edges, e.g. as an insert strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.