Stairtread facings and a co-extrusion method for their manufacture
US4840824A · kind A · utility
47Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1987 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | Oct 13, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249992
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A stairtread facing consists essentially of a strip of friction material and a location member therefor. The strip of friction material is a co-extrusion with at least a part of the location member which rests on a stair, and both friction material and location member are made of rubber or plastics material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.