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The valve for use in a narrow opening, for example. a venting channel of a window frame
The valve for use in a narrow opening, for example. a venting channel of a window frame
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机译:例如,用于狭窄开口的阀门。窗框的通风通道
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摘要
Valve suitable for use in a relatively narrow elongate opening to an air duct in a window frame which opening faces inwardly towards an accommodation space. The valve has at least two, preferably three, separately made, elongate members made by extrusion. A first valve body-forming member and a second holder-forming member together with a third support-forming member are adapted to be pivoted relative to each other. In the closed position of the valve the members are adapted to support each other in triangular form over a substantial part of the length dimension of the valve. The first and second members are jointed together as a pair and the third member is jointed together as a pair with the first member as well as being adapted to make a snap-forming supporting abutment against the second member.
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