Abstract: A window balance assembly may include a spring member, a mounting bracket, and a carrier. The spring member may include a first portion and a second portion. The mounting bracket may engage the first portion of the spring member. The carrier may include an upper body portion supporting the second portion of the spring member and removably engaging the mounting bracket, a lower body portion rotatably supporting a cam, and an elongated central portion extending between the upper body portion and the lower body portion. The elongated central portion may be resiliently flexible to allow movement of the lower body portion relative to the upper body portion.

Abstract: Channel reinforcements configured to move between open and closed location along with a window sash are described herein. The channel reinforcements may provide reinforcement to window jambs proximate the latch bolts that extend into jamb channels in the window jambs. The channel reinforcements may be coupled or uncoupled to the balances located in the window jambs.

Abstract: An air and/or debris dam for moving coil balance assembly for a hung window is disclosed. The air and/or debris dam is located between the carrier and a mounting location of a moving coil window balance assembly. The air and/or debris dam can travel within the jamb channel of a window frame assembly to inhibit airflow and/or the deposition of dust and/or debris in the jamb channel.

Abstract: A window balance assembly may be in a window jamb channel to provide a biasing force urging a window sash toward an open position. The window balance assembly may include a carrier, a spring element and a mounting bracket. The spring element may include first and second portions. The first portion may be coupled to the carrier. The mounting bracket may include a latch, a first head portion, and a first projection. The latch may engage the second portion of the spring element. The first head portion may be configured to abut a first wall of the window jamb channel when the window balance assembly is installed in the window jamb channel. The projection configured to extend through and engage an aperture in a second wall of the window jamb channel when the window balance assembly is installed in the window jamb channel.

Abstract: A side load constant force window balance assembly is disclosed. The balance assembly has a spring member, a spring housing, and a carrier module. The spring housing and carrier module are coupled to the spring member. The carrier module is configured to support a portion of a window sash and has an engagement feature configured to selectively engage the window frame.

Abstract: A window balance assembly may include a carrier, a spring element, and a mounting bracket. The spring element may include first and second portions. The first portion may be coupled to the carrier. The mounting bracket may engage the second portion of the spring element and may selectively engage the carrier. The mounting bracket may include a first mounting surface disposed at a non-perpendicular angle relative to an exterior surface of carrier when the window balance assembly is in an uninstalled configuration. The first mounting surface may be substantially parallel to the exterior surface of the carrier when the window balance assembly is in an installed configuration and the mounting bracket is disengaged from the carrier.

Abstract: An adjustable window construction is disclosed wherein improved sash carriers prevent damage to any of the components of the window assembly when the sash is forcibly raised to its uppermost position, or when the sash is disengaged from the upwardly biased sash carriers during removal of the sash. When a sash carrier reaches its uppermost position, the novel tapered upper end of the sash carrier gradually engages and wedges within the lower end of the spring cover located above it, slowing the sash carrier and dissipating much of its kinetic energy to reduce the force of final impact of the sash carrier with the spring cover.

Abstract: A window assembly has a sash vertically movable within a window jamb and positioned in the jamb by elongated side guide tubes enclosing counter balance means and resiliently biased partially into engagement with side ploughs of said sash, with the guide tubes extending outwardly from channels provided in opposed side jamb members. The guide tubes prevent lateral displacement of the sash as the sash is positioned within and moves from a window open to a window closed position within the plane of the jamb. The guide tubes can be reciprocally and resiliently compressed into the channels to release the ploughs and sash whereby the sash can be removed from the window construction.

Abstract: A sash platform for an automatic friction shoe connects to the shoe by means of a curved arm that fits into a correspondingly curved recess molded into the shoe body. An abutment limits the insertion of the curved arm into the shoe and holds a sash support blade at an operating level, and a curved holder surface supports the platform against the downward force of a sash. The shoe connects to a spring or counterbalance element and runs frictionally in a jamb liner channel.

Abstract: Counterbalance mechanisms for a vertically movable sash have components extending downward within guides on which the sash moves. The guides can move laterally of the sash to allow the sash to tilt and be removed from the window, and the counterbalance components are arranged within the guides to accommodate such lateral movement. Slots in the guides accommodate interconnections between counterbalance components within the guides and the sash running vertically against outward surfaces of the guides, and these interconnections also allow lateral movement of the guides and tilting of the sash. The guides are mounted on window jambs by resilient elements that bias the guides into engagement with sash grooves and also accommodate lateral movement of the guides out of the sash grooves, to allow the sash to tilt.

Abstract: An extruded resin spring cover (12) extending for the full length of a resin jamb liner (10) and divided into vertical halves (14) by a longitudinal slit (15) is involved in a friction system that prevents hop or drop of a sash (13) counterbalanced between jamb liners (10). A counterbalance spring system is arranged within spring cover (12) and connected to a platform (20) that has a narrow width neck (24 or 44) extending through slit (15). A sash support portion (25, 37, or 57) of the platform is pivotally mounted outside the spring cover, and a connector portion (30, 35, or 40) of the platform is connected to the counterbalance spring system within the spring cover. Neck (24 or 44) extending through slit (15) affords the pivotal interconnection between the sash support portion and the connection portion and also contributes a fixed friction load involved in spreading the spring cover halves apart at the slit, in the region of the neck.

Abstract: An extruded resin jamb liner (10) has a spring cover (12) with a longitudinal slit (15) in which a platform (20) moves for balancing a sash. Platform (20) is a single piece resin part having a spring connector (30) inside the spring cover, a neck (24) extending through the slit, and a sash support (25) outside the spring cover. The platform also has inside and outside friction surfaces (26 and 27) respectively engaging inward and outward facing surfaces of the spring cover on opposite sides of the slit to provide a load-related frictional resistance against vertical movement of the platform in the slit.

Abstract: The specification discloses an improved jamb liner and novel friction shoe balance arrangement for a cottage-style window enabling the friction shoe balance, or positioner, concept to be utilized with window sash having a plow of nonrectangular cross section, and in "non take-out" type double hung or vertical slidable windows. The jamb liner includes a body securable to the jamb and a channel in which the friction shoe rides extending into the sash plow. The channel comprises a pair of sidewalls projecting outwardly from the jamb liner body into the plow, each sidewall including end portions shaped to generally conform to the nonrectangular portion of the plow, and disposed along and adjacent the latter. A pair of shoe abutment walls extend inwardly toward one another from the opposite channel sidewalls, and provide generally coplanar surfaces against which the friction shoe bears.

Abstract: This invention relates to a weather strip and balance assembly for a window of a tilt sash type. The assembly includes a mounting plate for mounting the balance assembly thereon with a weather strip being clipped thereto and supporting the sash in a sliding and sealing manner. The weather strip has a pair of curved supporting ridges which mount the sash at conventional grooved surfaces along the stiles of the same and a recessed divider portion between the curved ridges in the weather strip provides for mounting and movement of the coupling pins which connect the balance assemblies to the sash and permit tilt of the sash on the weather strip. The mounting members on the sash for coupling the pins thereto provide mating keyed surfaces such that the pins rotate with the sash. These mounting members also include guide surfaces which couple the sash in a closed position and include the provision of a sweep lock member to secure the sash in a closed position.

Abstract: A double window construction having inner and outer windows mounted within a frame. Each window has an upper and lower glass pane. Each pane is mounted for vertical movement in its own vertical guide channels within the frame. The panes are joined by flexible means in a counter-balanced manner. Means are attached to each glass pane for detachably connecting the panes to the flexible means.