Bushing, formed compressible insulation for insulating air space created by holes
US4337603A · kind A · utility
11Cited by
7References
12Claims
0Family size
Inventor
Key dates
| Filing date | Jun 21, 1979 |
| Grant date | Jul 6, 1982 |
| Priority date | — |
| Expiry date | Jun 21, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04C2/521
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bushing formed of insulation that can be installed in holes drilled in wood framing components, used to construct a building, such as a dwelling, these holes are drilled so plumbing pipes & electrical wiring can be installed in said framing components. Purpose of this invention is to close off & insulate these holes before the articles are installed, or after they are installed, either method would greatly reduce infiltration & heat transfer through these necessary drilled holes, reducing the energy usage in said building, helping our Countries energy conservation program.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.