Method of electrical arc flash protection
US7145072B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2005 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Feb 27, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B99/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method of employing an electrical arc protective blanket to protect workers from electrical arc flashes. The blanket is composed of two or more layers where the layer closest to the electrical arc source is of a fiberglass material and the remainder of the layers are of fiberglass and/or a flame-retardant (FR) materials. The layers overlap so that the they can be attached around the entire perimeter. Preferred fiberglass fabrics are woven with a warp yarn break strength between about 0.7 and 1.5 times the fill yarn break strength. FR materials include FR cotton, para-aramids, and meta-aramids. A fastening structure is used to install the blanket for use. Contemplated fastening structures include straps with temporary fasteners around the blanket perimeter and eyelets. Optional integral handles facilitate carrying and installation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.