Sash for a sliding window or a sliding door and method for providing an untreated metal surface in such a sash
AssigneeTechnoform Bautec Holding GmbH
InventorsStefano MINELLI, Alice TORRICELLI
Life of this patent
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Abstract
A sash (2) for a sliding window (1) or a sliding door includes at least two aluminium members (4, 5) connected by one or more insulating strips (7, 8). The two aluminium members (4, 5) and one of the insulating strips (7) at least partially confine a cavity (9) having a first side (10) in a direction (y) perpendicular to a plane (x-z) in which the sash (2) extends and a second side (11) opposite to the first side (10). A low emissivity surface (6a) is disposed along the first side (10) or the second side (11) and has an emissivity ε of less than or equal to 0.3.
Claims21
A sash for a sliding window or a sliding door, the sash comprising:
- at least two metallic members connected by one or more insulating strips, wherein:
- the two metallic members and one of the insulating strips at least partially confine a cavity having a first side in a direction (y) perpendicular to a plane (x-z) in which the sliding window or the sliding door extends and a second side opposite to the first side,
- a low emissivity surface is disposed along the first side or the second side and has an emissivity ε of less than or equal to 0.3,
- the low emissivity surface is formed by:
- a non-treated surface of one of the two metallic members on the corresponding first or second side or
- a low emissivity foil.
(canceled)
A method for imparting low emissivity to an untreated metal surface in a sash for a sliding window or a sliding door, the sash comprising at least two metallic members connected by one or more insulating strips, the two metallic members and one of the insulating strips at least partially confining a cavity having a first side in a direction perpendicular to a plane(x-z) in which the sliding window or the sliding door extends and a second side opposite to the first side, and the low emissivity surface being disposed along the first side or the second side, the method comprising:
- covering at least a part of a surface of one of the two metallic members that faces the cavity in an assembled state of the sash, with a protecting foil,
- performing a surface treatment on at least one of the metallic members, and
- removing the protecting foil from the surface after the surface treatment.
Dependencies are inferred from the claim text.