Extruded plastic flush stop window mullion and framing system
US4621478A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1984 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Feb 14, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B3/9636
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A simplified plastic window framing system for single or multiple glazing comprising combinations of complementary extrusions wherein the outward appearance of the finished mullions and peripheral framing appears to be that of single extrusions. In outward appearance the glazing is retained within recesses formed in the mullions or frame members and separable retaining members. The combination creates a substantially rectangular external appearance to the individual mullions and framing members. The framing members are roughly L-shaped and the mullions are roughly T-shaped in cross section. The retaining members are substantially rectangular or trapezoidal in cross section. As finished units however, the mullions and framing members are both substantially rectangular in cross section with only the co-extruded glass seals slightly protruding from the mullions or framing members. All screw splines, notches and protrusions are hidden from view by the attached retaining members or, in the case of peripheral framing members, the structure to which the window is attached. The L-shaped framing members can be easily adapted by the attachment of two extra retaining members to form mullions …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.