Abstract: Disclosed are apparatus for a block and tackle window balance to be incorporated in single and double hung window assemblies. In one embodiment the block and tackle window balance includes a roller secured within a bottom guide to increase range of travel of a window sash.

Abstract: An electromagnetic interference shield for use around access panels and doors in electronic equipment enclosures includes a base and profile manufactured from an electrically nonconductive solid material such as a thermoplastic resin polymer. An electrically conductive layer of a metallized fabric is bonded to the profile to provide effective shielding and grounding functions. The underlying polymer provides elastic compliancy and resiliency to the shield. The shield may be divided into flexible fingers which can be rectangular or nonlinear shaped. The nonlinear shaped flexible fingers form nonlinear shaped slits between the fingers which provides improved EMI shielding by reducing the amount of EMI transmission that can pass through the shield. The electromagnetic interference shield may also be made from an electrically conductive material.

Abstract: An electromagnetic interference shield for use around access panels and doors in electronic equipment enclosures includes a base and profile manufactured from an electrically nonconductive solid material such as a thermoplastic resin polymer. An electrically conductive layer of a metallized fabric is bonded to the profile to provide effective shielding and grounding function. The underlying polymer provides elastic compliancy and resiliency to the shield. The shield may be divided into flexible fingers which can be rectangular or nonlinear shaped. The nonlinear shaped flexible finger from nonlinear shaped slits between the fingers which provides improved EMI shielding by reducing the amount of EMI transmission that can pass through the shield. The electromagnetic interference shield may also be made from an electrically conductive material.

Abstract: A substantially planar, laminated electromagnetic interference shield for use around I/O ports in electronic equipment enclosures such as computer cabinets and other electronics includes a resilient foam core, a metallized fabric or cover laminated to the core, and a stiffener bonded to at least one of the core and the fabric. The shield may be manufactured on a process line which laminates and bonds the elements together, die cuts the I/O port apertures, and prints identifying indicia on the shield.

Abstract: The floating weather-strip includes a sealing member and a support member having a spline for interfitting attachment to a jambliner to prevent the infiltration of air or water in the check-rail area between window sashes in a window assembly during sliding or tilting. The sealing member can include a foam material, and can be disposed on an upper and a lower surface of the support member. The removable attachment of the weather-strip to the jambliner facilitates replacement after installation, as well as customization of the compression characteristics to achieve specific biasing and sealing needs.

Abstract: A jambliner having a multi-part design includes a sash-engaging member defining a track and a pair of retaining arms extending from the sash-engaging member defining a channel. A resilient seal for biasing the jambliner against a window sash and sealing the jambliner against a jamb includes an elongated bulb having a spline of a shape corresponding to the shape of the channel. The resilient seal is removably attached to the sash-engaging portion through the mating of the spline and the retaining arms to form a dove-tail joint. The jambliner of the present invention facilitates replacement of the resilient seal after jambliner installation, as well as customization of the compression characteristics of the resilient seal to achieve specific biasing and sealing needs.

Abstract: A locking device for countering the force exerted by a spring balance while a window sash is in a tilt position or removed from a tilt position in a window frame, includes a shoe and a sash pin, the shoe engaging the walls of a jamb or jambliner when the window sash is tilted or removed from a tilt position, and the sash pin having a tab for preventing disengagement from the shoe during installation in a window frame. The shoe includes a pair of arms, one of which terminates in a barb and the other of which terminates in an angled edge, such that upon rotation, the shoe forms a wedge within a jamb or jambliner. The shoe further includes a plurality of prongs disposed between the arms for retaining the sash pin, and a bore for retaining an attachment mechanism associated with a spring balance.

Abstract: In a process for extruding a low density foam, a foamable thermoplastic elastomer such as a thermoplastic rubber is selected. The selected thermoplastic elastomer is then fed into a heated extruder barrel where it is compressed and melted by the action of a screw. A blowing agent consisting of water is introduced into the melted thermoplastic elastomer. The melted thermoplastic elastomer and the water are thoroughly mixed and then cooled to a uniform, predetermined temperature. The mixture is then forced through a die to form an extruded foam profile.

Abstract: A block and tackle balance disposed between a jambliner and a window sash includes a spring and a non-rotating pulley system. A head block is disposed on a rod for attaching the balance to the jambliner and securing one end of the spring, and a slide block is disposed at about the midpoint of the rod for securing the other end of the spring. The slide block acts in combination with a base block and a pulley cord, to create the non-rotating pulley system. The slide block and the base block each have at least one cord-receiving channel formed in a raised u-shaped member, for slidably receiving the pulley cord. The base block further includes a bore for securing an end of the pulley cord, and is coupled via the pulley cord to a shoe, which moves in response to movement of the window sash. As the shoe moves, the cord slides within the channels, and the slide block moves toward the base block.

Abstract: An apparatus are described for extruding a soft, low density elastomeric thermoplastic foam. A single screw extruder having a very large screw length to diameter ratio is provided to thoroughly mix the thermoplastic elastomer with a blowing agent. A thin, substantially taperless die is also provided to form extruded profiles. By using such an apparatus, a variety of complex-shaped extruded profiles may be easily produced.

Abstract: In a process for extruding a low density foam, a foamable thermoplastic elastomer such as a thermoplastic rubber is selected. The selected thermoplastic elastomer is then fed into a heated extruder barrel where it is compressed and melted by the action of a screw. A blowing agent consisting of water is introduced into the melted thermoplastic elastomer. The melted thermoplastic elastomer and the water are thoroughly mixed and then cooled to a uniform, predetermined temperature. The mixture is then forced through a die to form an extruded foam profile.

Abstract: A foldable shipping cover nailing fin for use with a frame assembly, including a window, door, or other such assembly. The shipping cover nailing fin includes an L-shaped flange-like member which includes an integrally formed insertion leg. The flange-like member is flexibly adjoined to a second member by a hinge mechanism. The hinge mechanism permits the flange-like member to rotate into contact with the second member. In this position, the insertion leg may be inserted into a nailing fin kerf formed in the frame assembly, thereby locking the shipping cover nailing fin to the frame assembly in the folded position.

Abstract: One embodiment of a gasket for shielding electromagnetic interference passing through a seam between first and second electrically conductive bodies includes a base for securing the gasket to the first, electrically conductive body and a multiplicity of discrete, elongate, metallized filaments projecting substantially perpendicularly from the base so that a substantial amount of the filaments contacts the second, electrically conductive body when electromagnetic interference passing through a seam between the bodies is to be shielded. The gasket further includes structure, arranged with the base, for providing an electrically conductive path for conducting electric current between the filaments and the first, electrically conductive body. In this manner, energy absorbed the shielding member as a result of the shielding of passing electromagnetic interference can be dissipated to ground through the first, electrically conductive body.

Abstract: A process and apparatus are described for extruding a soft, low density elastomeric thermoplastic foam. A single screw extruder having a very large screw length to diameter ratio is provided to thoroughly mix the thermoplastic elastomer with a blowing agent. A thin, substantially taperless die is also provided to form extruded profiles. By using such a process and apparatus, a variety of complex-shaped extruded profiles may be easily produced.