Abstract: A grommet for use in a cable fitting includes a body having a bore substantially therethrough and a resilient membrane located within the bore. The resilient membrane has a thinner membrane portion extending radially towards the bore to provide a controlled tear during cable insertion. The body has an exit opening which comprises resilient gripping teeth projecting axially from the body with an axially extending resilient foldable membrane located between at least two adjacent resilient teeth and foldable therebetween when they are radially compressed. Once force is applied by the axial movement of the fitting assembly onto a tapered surface of the grommet, the flexible gripping members radially collapse towards an inserted cable. The grommet may be assembled in a strain relief connector having a nut, a connector body and optionally an insert.

Abstract: A non-return valve having an accumulation damper movable relative to a housing and shaped like a bowl to accumulate condensate running down from the chimney. The non-return valve has a smaller floating damper made of a material having a density less than water for resting against the accumulation damper when the appliance is in standstill and sealing the drainage holes in the accumulation damper when the condensate accumulation is below a threshold. Once condensate accumulates in the accumulation damper beyond the threshold, the floating damper is buoyed by the condensate thereby breaking the seal with the drainage holes and permitting the condensate to drain through drainage holes in the accumulation damper. When the appliance is operational, exhaust from the appliance lifts the floating damper and, in some cases, the accumulation damper also, to permit exhaust of combustion gases up the chimney.

Abstract: A connection to releasably connect and disconnect to a pipe to a fitting provides a pipe fitting body for receiving a pipe and a retaining ring located within the fitting body for retaining and releasing the pipe. The retaining ring has axially extending resilient retaining tabs, each of which has a radially inwardly extending portion for engaging the pipe, and, a radially outwardly extending portion which extends through corresponding radial openings in the fitting body. When the pipe is inserted into the fitting body to an inserted position and the retaining ring is in the first locked axial position, the radially inwardly extending portions engage and retain the pipe in the inserted position.

Abstract: A grommet for use in a cable fitting includes a body having a bore substantially therethrough and a resilient membrane located within the bore. The resilient membrane is elastically deformable from a receiving position before the cable is inserted into the bore, to an inserted position, after the cable is fully inserted into the bore. In the receiving position, the resilient membrane is substantially conically shaped having an apex substantially coincident with an insertion opening of the body, and, the resilient membrane is axially displaced during the insertion of the cable to an inverted position with respect to the receiving position where the apex is oriented away from the insertion opening. The resilient membrane has a thinner membrane portion extending from the apex towards the bore to provide a controlled tear during cable insertion.

Abstract: The invention provides a replaceable bushing in the base of a nozzle of a hot runner assembly and provides access through a manifold and a rear plate for removal and replacement of the bushing without having to disassemble the hot runner assembly. According to one embodiment of the invention, an actuator access port is provided for removing the valve pin actuator and a bushing access port is provided for accessing the bushing upon removal of the valve pin actuator, both of which may be removed from a second or rear plate of the injection molding assembly.

Abstract: A cooling arrangement is provided for a mold centering device for multi-level stack molds having a spline shaft with a central region journaled to an intermediate mold level with involute spline pathways extending in oppositely twisting helices from the central region toward opposite ends thereof and respective spline nuts secured to adjacent mold levels threadedly engaging the spline pathways to run therealong for converting linear motion into rotational motion and vice versa thereby controlling relative opening and closing rates of the adjacent mold levels relative to the intermediate mold levels therebetween. The cooling arrangement has an internal fluid passageway extending along the spline shaft into a region of the spline shaft received in the spline nuts. A fluid inlet communicates with and supplies fluid to the fluid passageway. A fluid outlet communicates with and discharges fluid from the fluid passageway.

Abstract: A cooling arrangement is provided for a mold centering device for multi-level stack molds having a spline shaft with a central region journaled to an intermediate mold level with involute spline pathways extending in oppositely twisting helices from the central region toward opposite ends thereof and respective spline nuts secured to adjacent mold levels threadedly engaging the spline pathways to run therealong for converting linear motion into rotational motion and vice versa thereby controlling relative opening and closing rates of the adjacent mold levels relative to the intermediate mold levels therebetween. The cooling arrangement has an internal fluid passageway extending along the spline shaft into a region of the spline shaft received in the spline nuts. A fluid inlet communicates with and supplies fluid to the fluid passageway. A fluid outlet communicates with and discharges fluid from the fluid passageway.

Abstract: The invention provides a replaceable bushing in the base of a nozzle of a hot runner assembly and provides access through a manifold and a rear plate for removal and replacement of the bushing without having to disassemble the hot runner assembly. According to one embodiment of the invention, an actuator access port is provided for removing the valve pin actuator and a bushing access port is provided for accessing the bushing upon removal of the valve pin actuator, both of which may be removed from a second or rear plate of the injection molding assembly.

Abstract: According to the present invention, a manifold mounting arrangement is provided wherein a leg manifold is securely mounted midway along its length rather than at its sprue bushing and whereby thermally induced length changes are accommodated outwardly from its centre. Additionally, a first end of the leg manifold is clampingly secured between a sprue housing and a manifold insulator to avoid movement of the first end toward the sprue upon a sprue break portion of the injection moulding cycle.

Abstract: According to the present invention, a manifold mounting arrangement is provided wherein a leg manifold is securely mounted midway along its length rather than at its sprue bushing and whereby thermally induced length changes are accommodated outwardly from its centre. Additionally, a first end of the leg manifold is clampingly secured between a sprue housing and a manifold insulator to avoid movement of the first end toward the sprue upon a sprue break portion of the injection moulding cycle.