Window coverings
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United States of America Patent
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Issued Date -
Jul 24, 2008
app pub date -
Jan 18, 2008
filing date -
Jan 18, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A window blind assembly is provided for use with a roller blind. The assembly comprises a charging element; a retaining element; and an energy storage system operatively connected therebetween. The energy storage system comprises a plurality of springs and the charging system is adapted to rotate relative to the retaining element such that the energy storage system is charged upon closure of the blind and the stored energy is released during the opening of the blind, whereby the opening of the blind is assisted by the release of the stored energy from the energy storage system. The springs are connected in series such that they are axially spaced from each other and adjacent ends of the springs are connected together via a connector located therebetween, wherein the adjacent ends of the springs are each coupled to a respective end of the connector and rotation of one spring relative to the other is prevented.
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