Window frame assembly
US12215543B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2021 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | Jun 27, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B7/231
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lift rail and sill assembly for a window frame assembly includes a lift rail defining a lower rail end and an upper rail end, the lift rail further defining a seal retaining channel, the lift rail movable between an open position and a closed position; a seal received in the seal retaining channel of the lift rail; and a sill defining a lower sill end and an upper sill end, the sill comprising a sill ledge arranged at the lower sill end and a sill flange extending from the sill ledge to the upper sill end; wherein a gap is defined between the sill ledge and the lower rail end of the lift rail in the closed position to allow fluid to flow between the sill ledge and the lower rail end, and wherein the seal engages the sill flange in the closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.