| CPC E05D 15/30 (2013.01) [E05D 11/0081 (2013.01); E05F 11/16 (2013.01)] | 19 Claims |

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1. An electrical linkage assembly for a window sash mounted in a window frame, the electrical linkage assembly comprising:
a frame mount comprising:
a housing configured to couple to the window frame and defining a longitudinal axis, wherein an elongated opening extending along the longitudinal axis is defined by the housing, and wherein the housing includes one or more stop projections;
a track disposed at least partially within the housing proximate the elongated opening, the track slidable relative to the housing along the longitudinal axis;
a sash mount configured to couple to the window sash and defining an interior cavity;
a first link arm having a first end pivotably coupled to the track of the frame mount forming a first pivot joint and a second end, wherein the one or more stop projections extend into a path of travel of the first link arm to define a pivot stop;
a second link arm having a first end pivotably coupled to the second end of the first link arm forming a second pivot joint and a second end pivotably coupled to the sash mount forming a third pivot joint; and
one or more electrical wires extending from the frame mount, through the first and second link arms and each of the first, second, third pivot joints, fully enclosed therein, and out of the interior cavity of the sash mount.
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