Abstract: A 4-bar linkage assembly for mounting a sash to a frame member of a window assembly. The linkage assembly including a vent bar having an offset portion and a base portion that fits within a sash channel of the sash. The vent bar includes a fixed connection extending between the offset portion and the base portion for supporting the offset portion and projecting between overhanging rails of the sash channel. The offset portion forms a stop which engages an end of the sash channel for locating the vent bar within the sash channel.

Abstract: An adapter system for mounting conventional four-bar hinges within window assemblies that include elongated channels for mounting window hardware. One or more clamps having attachment features aligned with openings in a linkage bar of the four-bar hinges are received within the elongated channels of window sashes. The attachment features provide for aligning the linkage bars to the channels and for both temporarily and more permanently securing the vent bars to the channels.

Abstract: A 4-bar linkage assembly overcomes the space constraints of window assemblies having so-called “Euro-Groove” hardware mounting systems in which opposing mounting channels are formed in sash and frame members of the window assembly. A base portion of a vent bar of the linkage assembly fits within the sash channel, and an offset portion forms a stop against one end of the sash channel for locating the linkage assembly within a window sash. A track member attaches the linkage assembly to the frame channel. A fixed connection between the base portion and the offset portion projects between overhanging rails of the sash channel for supporting the offset portion. A spacer supports intermediate linkages of the assembly above sidewalls of the sash channel for operating the linkage assembly within a remaining clearance space between the sash and frame channels.

Abstract: A shim assembly is constructed for engaging a hinge assembly to allow operable installation of the hinge assembly in an otherwise oversized sash-frame cavity. A shim body can include at least one projecting tab for engaging a vent bar of the hinge assembly, wherein the projecting tab can be integrally formed with the shim body. Alternatively, snap rivets can be used to engage the shim body with the vent bar.

Abstract: An egress 4-bar hinge assembly having two load-bearing links that pivot about spaced-apart bearing pivot points, wherein an entire length of at least one of the links overlies a planar bearing surface. The two links include a cooperating interface selected to engage through only a portion of the respective range of motions. The hinge assembly includes a support extension to define the bearing surface, wherein the support extension can include an integral end cap.

Abstract: A shim assembly is constructed for engaging a hinge assembly to allow operable installation of the hinge assembly in an otherwise oversized sash-frame cavity. A shim body can include at least one projecting tab for engaging a vent bar of the hinge assembly, wherein the projecting tab can be integrally formed with the shim body. Alternatively, snap rivets can be used to engage the shim body with the vent bar.

Abstract: An egress 4-bar hinge assembly having two load-bearing links that pivot about spaced-apart bearing pivot points, wherein an entire length of at least one of the links overlies a planar bearing surface. The two links include a cooperating interface selected to engage through only a portion of the respective range of motions. The hinge assembly includes a support extension to define the bearing surface, wherein the support extension can include an integral end cap.