WINDOW COVERING WITH CONSTANT LIFTING CORD FRICTION
摘要
<p>A window covering includes an at least partially light occluding layer that can be attached to a lintel at an upper end and with a bottom rail at a lower end that can be moved to selectively cover the window. Cords are fixed to the upper end of the layer and extend past the bottom rail. The bottom rail includes a friction module which applies sufficient friction to the cords to keep the bottom rail fixed to the cords unless additional forces are applied to the bottom rail to move the rail. A pair of engagement surfaces are spring biased against the cords to apply friction forces. A lever acts on the springs to adjust for variationsin friction forces so that the bottom rail remains horizontal. The bottom rail is formed of a closable structure with a cap hinged to a base for ease in forming the bottom rail.</p>
申请公布号
WO2009113998(A1)
申请公布日期
2009.09.17
申请号
WO2008US13806
申请日期
2008.12.16
申请人
SHADES UNLIMITED, INC.;MILITELLO, DAVID, R.;SHEVICK, BARRY, L.