Window frame
US4037378A · kind A · utility
7Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1976 |
| Grant date | Jul 26, 1977 |
| Priority date | — |
| Expiry date | Feb 24, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2003/4453
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The window frame is adapted to receive at least one sash and has metal portions on an outdoor face thermally insulated from metal portions on an indoor face to thereby provide a thermal break. At least in part, the thermal break is attained by way of a thermal barrier strip having spaced parallel zones of contact with juxtaposed walls of the metal portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.