E - Fixed Constructions – 06 – B
Patent
E - Fixed Constructions
06
B
160/1
E06B 9/26 (2006.01) E06B 9/307 (2006.01)
Patent
CA 1219518
ABSTRACT OF THE DISCLOSURE A Venetian blind assembly having rotatably mounted tilt drums which are adapted to permit properly aligned and indexed mounting of respective slat ladders without the necessity for time consuming measurements and without the need for auxiliary fasteners. Each ladder has an uppermost rung disposed about an underside of a respective tilt drum with portions of the ladder side cords adjacent said uppermost rung extending over the drum in crossing relationship and then downwardly along opposite sides of the drum with the slat supporting rungs suspended below the drum. The drum includes first integrally formed ladder engaging constrictions cooperating with the uppermost ladder rung for indexing the rung in relatively precise position on the drum and for securing the ladder in such index position, and second ladder engaging constrictions in axially spaced relation to the first ladder engaging restrictions for retaining the downwardly extending side cord portions in proper position with respect to the drum, whereby the upper rung and adjacent side cord portions are wrapped about the drum approximately 1-1/2 turns and secured in such assembled position during tilting movement of the drum.
451000
Macrae & Co.
Roper Corporation
LandOfFree
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