Guardrail system for an apparatus movable along a roof structure
US6233894A · kind A · utility
8Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1998 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Dec 30, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S52/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A guardrail assembly movable along a roof structure is disclosed. The guardrail assembly is used in cooperation with a roof structure having a plurality of purlins spaced apart from one another in a parallel arrangement and sheets of roofing material fastened to the purlins. The sheets have ends which define an edge of the roof structure extending in a first direction. The guardrail assembly is movable along the roof structure in the first direction. The guardrail assembly includes a railing positioned above the sheets of roofing material and extends generally in the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.