Abstract: A pipe joint is disclosed, along with a pipe for use with such a joint. The pipe has a double wall construction with support ribs connecting the two walls of the pipe. The pipe also includes at least one end wall having a routed groove formed therein, wherein the groove is dimensioned to receive a coupling member. A locking entrance lip is formed within the groove. The pipe joint includes two pipe sections and a coupling member that is received into the respective grooves of each pipe section and is locked into place by the locking entrance lips. The joint is fluid tight, locks the pipe sections in place, and is smooth on both the interior and exterior surfaces of the two connected pipes. In addition, the disclosed pipe joint construction is very easy to assemble, and is particularly suited for use in sewer relining operations.

Abstract: A coupling member includes a ring is formed with a predetermined draft angle. A gasket is provided for creating a seal between the ring and the end grooves of the conduit. The gasket comprises first and second walls which define an interior cavity for receiving the ring. The first and second walls have differential thicknesses so as to accommodate the draft angle of the ring. A plurality of fins are formed integrally on the exterior of the gasket for creating an interference fit with the end grooves.In the preferred embodiment, the first wall is substantially thicker than the second wall and the fins exterior to the first wall are thicker than the fins on the second wall. Also, the thicknesses of the first and second walls are preferably tapered so as to define an interior cavity having a draft angle equal to that of the ring.

Abstract: A high-wattage lighting fixture includes a lamp socket assembly for receiving a lamp and a socket wire for supplying electrical power to the lamp socket. A heat sink is provided in thermal contact with the lamp socket assembly. A predetermined length of socket wire is in thermal contact with the heat sink in order to dissipate the heat from the socket and wire. A wiring compartment receives the socket wire and provides a connection to a supply wire. Since the socket wire is cooled down by the heat sink, it can be connected to any grade of supply wire.

Abstract: A draw latch assembly is formed of three major components including a base member and a latch or bail member interconnected by a link member. The link member and the base member are capable of being pivotally connected in either of two positions rotated 180.degree. from each other so that the reach of the bail member can selectively be either of two different lengths.

Abstract: A force-transmitting joint formed between two pipe sections is provided that is particularly suited for an extruded, plastic pipe having a variable wall thickness. The joint has a smooth outer surface and a constant gap in which a sealing member is retained. The pipe section has an outer wall including an outer surface and an inner surface with a variable wall thickness defined therebetween. A first end of the pipe section includes a first joint member comprising a first support surface having a constant width. The first joint member further comprises an outwardly extending sealing leg having a variable width. A second end of the pipe includes a second joint member comprising a second support surface having a constant width which is less than the width of the first support surface. The second joint member further comprises a recess having a variable thickness. An annular sealing member is assembled onto the sealing leg.

Abstract: A mounting assembly for supporting a ceiling fan from a ceiling includes a support beam located inwardly of the ceiling surface at least a distance t. An electrical box having a bottom wall is directly joined to and supported from said support beam. The box has side walls extending from the bottom wall through the ceiling substantially to the exposed ceiling surface and terminating in an open end. A rigid metal plate or disk member adapted for supporting and mounting a ceiling fan is positioned over the open end of the box. The disk member is of a size sufficient to have a peripheral portion extending radially beyond the side walls of the box; and, a plurality of mounting screws extend from the metal disk member through the interior of the box into connected engagement with the beam for supporting the disk member from the beam without reliance on the electrical box.

Abstract: A three-way toggle dimmer circuit controls the brightness of a lamp by independent operation of two light dimmer switches with each dimmer switch having its own electronic light dimmer circuit. Each of the light dimmer switches is arcuately actuated with one end of the vertical movement changing the electrical interconnection between the light dimmer switches. The other end of the vertical movement changes the internal electrical characteristics within the light dimmer circuit itself. The electronics of the light dimmer circuits are controlled by the position of a toggle arm through a linear slide potentiometer including both a variable slide resistor and a miniature internal switch.

Abstract: An adjustable lamp assembly comprises a PAR type lamp housing an a mounting base for supporting the housing. A mechanical adjusting assembly interconnects the housing and the mounting base for permitting selective adjustment of the housing relative to the base about first and second axes lying in respective planes located at approximately 90.degree. relative to one another. The adjusting assembly includes an intermediate support member connected between the housing and the base with first connecting assembly joining the intermediate support member to the base and a second mechanical connecting assembly joining the intermediate support member to the housing. The first and second connecting assemblies each including separate first and second spring biased circular arrays of teeth-like members selectively movable axially along the respective first and second axes between locked positions and adjustment positions wherein selective rotary adjustment about the respective axis is permitted.

Abstract: An electrical box assembly for installation in a poured concrete building partition, such as a ceiling, comprises a base ring member including a ring body having a central through opening and radially extending mounting tabs for permitting the base ring member to be joined to a form over which concrete is to be poured during forming of the building partition. The base ring member further includes an upper edge surrounding the through opening with connection portions lying radially outwardly of the upper edge. A box cover member is provided for connection to the base ring and terminates in a lower edge with a laterally extending shoulder receiving the upper edge of the base ring member. The box cover member further includes releasable connectors joined with the connecting portions on the base ring member for maintaining the box cover member in engagement with the base ring member. Selectively removable knockout portions are provided in the cover member for allowing connecting of the conduit therewith.

Abstract: A coupling device for installation in a building wall or floor to provide a passthrough opening for pipes, tubing, and the like comprises an axially elongated, plastic tubular housing with a radially extending mounting flange and having open first end and a second end which is closed by a transverse wall. At least one tubular coupling element having an entrance end and an exit end is positioned within the housing to extend axially thereof with the entrance end of the coupling opening to the first end of the housing. Intumescent firestop material surrounds the coupling element and fills the space between the coupling element and the outer housing. A tube member extends from the coupling element to the second end of the housing. After the coupling device is installed, the second end of the housing is cut away at the surface level of the partition to expose the tube member for connection to the associated piping system.

Abstract: A device for installation in a building wall or floor to provide a passthrough opening for pipes, tubing, and the like includes an axially open first end and a second end closed by a transverse wall. A ring of intumescent material fills the axially open first end of the housing, and in one embodiment, a foam plastic filler material substantially fills the housing between the intumescent ring and the transverse wall. The intumescent ring can be provided with a central opening sized to engage with an interference fit a tube or pipe passing through the device. Alternatively, the ring can support a tube coupling for providing a tubular connection within the device to receive and couple pipes on opposite sides of the building wall or floor in which the device is installed.

Abstract: A pipe joint and coupling construction particularly suited for joining large diameter plastic pipe as used in sewer relining. The construction comprises first and second sections of cylindrical pipe having axially aligned opposed end walls with a continuous groove formed in each end wall. The groove in each end wall is axially aligned with the groove in the opposed end wall and cooperates therewith to form a gasket receiving chamber. The coupling member is adapted to be mounted in the gasket receiving chamber for sealingly joining the pipe sections. It comprises a rigid annular core ring for mounting in the chamber to extend axially into each of the axially aligned grooves. A resilient compressible elastomeric covering is positioned over the core ring and carried circumferentially continuous radially extending protrusions which are sized to be sealingly compressed between the core ring and the side walls of the grooves.

Abstract: An electrical outlet box is molded of plastic and includes push-in type screw receiving openings each of which is defined by rigid first and second walls having opposed semi-cylindrical faces mounted in spaced and axially aligned relationship to produce a generally cylindrical passage open at an outer end. Threads are formed about the interior of the cylindrical passage. In a first embodiment, the first wall is supported and carried substantially entirely by a resilient support wall lying in a plane generally perpendicular to the axis of the cylindrical passage. The support wall is mounted in cantilever fashion at a location spaced radially from the axis of the cylindrical passage so that the first wall can resiliently deflect away from the second wall when a screw is pushed axially into the passageway. In a second embodiment, both the first and second walls are mounted by resilient support walls to allow deflection in the manner described.

Abstract: An electrical outlet box is molded of plastic and includes push-in type screw receiving openings each of which is defined by rigid first and second walls having opposed semi-cylindrical faces mounted in spaced and axially aligned relationship to produce a generally cylindrical passage open at an outer end. Threads are formed about the interior of the cylindrical passage. The first wall is supported and carried substantially entirely by a resilient support wall lying in a plane generally perpendicular to the axis of the cylindrical passage. The support wall is mounted in cantilever fashion at a location spaced radially from the axis of the cylindrical passage so that the first wall can resiliently deflect away from the second wall when a screw is pushed axially into the passageway.