Movable scaffold rung
US4903795A · kind A · utility
5Cited by
6References
2Claims
0Family size
Inventor
Key dates
| Filing date | Oct 21, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Oct 21, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G5/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Construction scaffolding comprising adjacent end frames with joined vertical support members is provided with movable rung members that are extendible and retractable, that engage the exterior surface of the vertical support members, and that are secured to the support members by clamp members having quick-release threaded fasteners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.