US Patent 7373965 Window shade lift cord apparatus

A window shade lift cord apparatus includes a seat, a control switch and a cord assembly. The seat has an aperture on the bottom and axles in the interior. The control switch includes an anchor member and a depressing member that are movably coupled together and interposed by an elastic element. The anchor member and the depressing member have respectively two through holes and two openings. The cord assembly has cords treading through the aperture of the seat, through holes and openings of the anchor member and depressing members such that the lower ends of the cords are gathered beneath the seat. Retracting of the window shade can be accomplished rapidly and simply.