Pressure impregnation of wood poles for preservation
US4567115A · kind A · utility
16Cited by
2References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1984 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Jul 30, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31989
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A treatment for wood poles, as used for telecommunications and electric power poles, to reduce surface hardening comprises modifying the standard treatment solution by the addition of a polymer of ethylene oxide. A surface active agent is a further possible additive, and reduction of the hexavalent chrome ion in the standard solution is a further modification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.