Patent ID: 7137430
Filing Date: 2006-11-21
Classification: E06B

Abstract:
1. An apparatus to control the lift and tilt of slats of a horizontal blind comprising: a truncated cone fixable with a lifting cord to facilitate coiling of the lifting cord on the cone when the cone is rotated about a shaft, wherein the cone has a first end with a first diameter and a second end with a second diameter; an axle portion joined with the cone so that the axle portion rotates with the cone; a torsion spring frictionally wrapped about the axle portion, wherein the torsion spring has protruding ends; a tilting drum fixable with a ladder cord to raise and lower alternate sides of the ladder cord wherein the tilting drum rotates on the axle portion and has a drum key positioned between the protruding ends of the torsion spring, and wherein the tilting drum has a deflecting surface positioned at the first end to direct a coiling portion of the lifting cord onto the first end of the cone and to move previously wound coils across the cone towards the second diameter; a support with a brace to prevent longitudinal movement of the axle portion and to permit rotation of the axle portion, wherein the support further comprises a limit means to limit the rotation of the torsion spring; and a guide to lead the lifting cord to the deflecting surface.