Operating device for a window covering
AssigneeVako B.V.
InventorNanne Willem Valkenburg
Life of this patent
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Abstract
The invention relates to an operating device for a window covering such as a Roman blind, pleated blind and/or a horizontal blind, comprising at least one carrying structure, at least one axially rotatable cord spool configured for winding up and unwinding at least one pull cord thereby lowering and/or raising a window covering, at least one drive shaft connected to the at least one cord spool, at least one pull cord connected to the drive shaft, at least one ladder cord configured for supporting at least part of the window covering. The invention is characterized in that movement of the pull cord relative to the ladder cord is restricted.
Claims17
An operating device for a window covering such as a horizontal blind, comprising:
- at least one carrying structure;
- at least one pull cord connected or connectable to a bottom rail of a window covering, wherein operating the pull cord enables lowering and/or raising of the bottom rail with respect to the carrying structure;
- at least one lifting element configured for guiding the pull cord at least during lowering and/or raising the window covering;
- at least one ladder cord configured for supporting at least part of the window covering;
- at least one sleeve configured to at least partially enclose the at least one pull cord;
- and
- at least one connector for connecting the at least one sleeve to the carrying structure,
- wherein the operating device comprises a plurality of blocking elements, wherein at least one blocking element at least engages or is attached to at least one pull cord such that movement of the pull cord relative to the ladder cord is restricted;
- and
- wherein the connector comprises a primary connector part and a secondary connector part wherein the sleeve is enclosed between the primary connector part and the secondary connector part.
An operating device for a window covering, comprising:
- at least one carrying structure;
- at least one pull cord directly or indirectly connected or connectable to a bottom rail of a window covering, wherein operating the pull cord enables lowering and/or raising of the bottom rail with respect to the carrying structure;
- at least one lifting element configured for guiding the pull cord at least during lowering and/or raising the window covering;
- at least one sleeve configured to at least partially enclose the at least one pull cord;
- and
- at least one connector for connecting the at least one sleeve to the carrying structure,
- wherein the operating device comprises a plurality of blocking elements, positioned along the length of the pull cord, which blocking elements cooperate between at least part of the pull cord and part of the window covering, such that movement of the pull cord relative to the window covering is restricted;
- and
- wherein the connector comprises a primary connector part and a secondary connector part wherein the sleeve is enclosed between the primary connector part and the secondary connector part.
Dependencies are inferred from the claim text.