Patent ID: 6601635
Filing Date: 2003-08-05
Classification: E06B,F03G

Abstract:
In a window blind system having a headrail and a bottom rail with window covering located therebetween, and a spring motor adjustably positioned in one of said head or bottom rails including a flexible line storage spool with flexible line spooled thereon and connected to the other of said headrail and bottom rail to permit separation of said bottom rail from said headrail between a first position with the headrail adjacent the bottom rail, and in a second position with the headrail remotely positioned relative to the bottom rail; a method of insuring the retention of the bottom rail relative to the headrail at any point between said first and second positions until a force is exerted sufficient to effect relative displacement therebetween; the method comprising the steps of:applying a frictional force to at least one of said flexible line, line storage spool and spring motor to effect retention of the bottom rail relative to said headrail at said point when said force is removed; and applying a lubricant to at least one of said flexible line, line storage spool and spring motor to effect retention of the bottom rail relative to said headrail at said point when said force is removed.