Window coverings
First Claim
1. A window coverings, comprising at least:
- an upper elongated member;
a lower elongated member spaced from the upper elongated member at a lower position;
a slat assembly which has slats and a lift cord means and an upper end fastened to the upper elongated member and a lower end fastened to the lower elongated member;
a lift cord winding and releasing control means located on the upper elongated member;
a first lift cord to control the lower elongated member to be extended downwards in a constant fashion having one end fastened to the lift cord winding and releasing control means and other end threading through the upper elongated member; and
a second lift cord to control the lower elongated member to be retracted upwards in a staged fashion having one end fastened and wound around the lift cord winding and releasing control means and other end threading through the upper elongated member.
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Accused Products
Abstract
A window coverings includes an upper and a lower elongated members, a slat assembly, a first lift cord, a second lift cord and a lift cord retracting and releasing control means. The lift cord retracting and releasing control means is located at the upper elongated member and cooperative with the first and second lift cords to control movement of the slat assembly. The first lift cord has one end fastened to the lift cord retracting and releasing control means and other end threading through the upper elongated member. The second lift cord has one end fastened and wound around the lift cord retracting and releasing control means and threading through the upper elongated member. Through coupling relationship between the first and second lift cords and the lift cord retracting and releasing control means the slat assembly already rolled up or extended at a selected elevation can be altered to another elevation.
36 Citations
20 Claims
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1. A window coverings, comprising at least:
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an upper elongated member; a lower elongated member spaced from the upper elongated member at a lower position; a slat assembly which has slats and a lift cord means and an upper end fastened to the upper elongated member and a lower end fastened to the lower elongated member; a lift cord winding and releasing control means located on the upper elongated member; a first lift cord to control the lower elongated member to be extended downwards in a constant fashion having one end fastened to the lift cord winding and releasing control means and other end threading through the upper elongated member; and a second lift cord to control the lower elongated member to be retracted upwards in a staged fashion having one end fastened and wound around the lift cord winding and releasing control means and other end threading through the upper elongated member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification