Abstract: The present invention is directed to improvements in servicing the air filters in air conditioning units such as rooftop air conditioning units. More specifically, the invention is directed to an air filter channel and puller which facilitate the removal of rows of filters.

Abstract: A sealing assembly for molds used for casting sanitary fixtures including at least one female die which is capable of defining the molding cavity of the item as well as at least one male die which is designed to be introduced into and withdrawn from said molding cavity, and which is provided with a mating surface capable of interacting with an associated mating surface of at least one female die. The sealing assembly includes a tubular elastic body of annular shape which is placed within a peripheral groove recessed in the mating surface of at least one male die, and which is connected to an assembly capable of alternately deflating and inflating said elastic tubular body so that the latter assumes a first transverse shape which is completely accommodated within the corresponding transverse-shape of the groove, and a second transverse shape which projects beyond the mouth of the groove, where it comes to rest against the facing associated mating surface of at least one female die.

Abstract: A trapway reseal device for a toilet tank where the toilet tank includes an overflow tube and a water control. The trapway reseal device includes a float slidably supported along the overflow tube to move with the changing level of water in the tank as the tank is flushed and refilled. A reseal hose receives water from the water control and includes a free end coupled to the float. The reseal hose selectively directs water into at least one of the tank in the overflow tube dependent upon the position of the float as determined by the level of water in the tank.

Abstract: A liquid refrigerant distributor for use within a heat exchanger having a body of heat exchange tubes. The distributor comprises a mesh screen and a liquid refrigerant sprayer. The liquid refrigerant sprayer is adapted to spray refrigerant on the mesh screen. The mesh screen being adapted to pass liquid and vaporous refrigerant but also to direct liquid refrigerant onto the heat exchange tubes.

Abstract: An apparatus for de-molding sanitary ware castings from porous molds, and in particular, from synthetic resin molds, comprising a carriage capable of traveling on rails parallel to the plane of the opening of a mold. The carriage moves to and from a position between separated mold parts of the mold and a position outside of the mold. The carriage includes an upper frame structure capable of displacement in a direction at right angles to the rails, on which is mounted at least one form capable of matching, at least in part, the outward shape of the piece to be molded. The mold is connected to the upper structure by an intermediate means of variable geometry so as to allow a range of motion. A pneumatic means is included to retain the form in contact with the cast piece.

Abstract: Compression refrigeration apparatus for removing heat from a heat load using a falling film evaporator, operated with an azeotropic refrigerant and utilizing a spray tree distribution system that distributes a refrigerant film on a heat exchange surface by spraying liquid refrigerant onto a surface and allowing the refrigerant to drip onto the primary heat exchange surface. The apparatus allows for efficient recovery of lubricant deposited in the evaporator without redistributing the lubricant within the evaporator. In an alternative embodiment, liquid refrigerant is sprayed onto a mesh screen where it drips onto the primary heat exchange surface.

Abstract: A method of controlling an expansion valve in a refrigeration system. The method comprises the steps of controlling the modulation of the expansion valve based upon a first feedback control criteria; and controlling the modulation of the expansion valve based upon a second feed forward control criteria.

Abstract: Pressure-casting bench for vitreous china sanitary fixtures having two guides on which mold parts travel in a horizontal direction, capable of pairing so as to bound a molding cavity, a set of guides or rails being provided for introducing into and removing from the cavities so bounded, additional mold parts known as mandrels. An upper support structure is provided capable of supporting a horizontal beam and causing it to travel in a plane at right angles to the plane defined by the guides under which all the mandrels are fixed in order to enter the molding cavities. A series of plates, spindles and springs are provided for the mandrels as well as a series of pegs for clamping the mandrels to the mold parts thereunder and encasing the molding cavities and subsequently releasing the mandrels from the mold parts.

Abstract: A toilet trip lever mechanism for use with pressure flush toilets including a coil-type member formed integrally as part of the lever arm. The coil member acts as a shock absorber during the flushing process to absorb kickback during flushing.

Abstract: A method of minimizing energy use in a chiller and cooling tower system is disclosed. The method comprises the steps of: determining a measure of chiller efficiency; determining a measure of cooling tower efficiency; determining a measure of the transfer rate of heat energy between the cooling tower and the chiller; calculating a near optimal water temperature as a function of the chiller work efficiency, the cooling tower efficiency and the transfer rate; and operating the cooling tower to provide a conditioned fluid at the temperatures to produce near optimal energy consumption.

Abstract: A polymeric composite structure having a polymeric shell layer with a finish-side and a non-finish side and a cross-linked thermosetting polymeric backing layer and method of manufacturing thereof is provided. The cross-linked thermosetting polymeric backing layer is simultaneously molded to conform to the shape of and bonded directly to essentially the entire non-finish side of the polymeric shell layer. The method includes forming the polymeric shell having a finish-side and non-finish side into a suitable shape, placing the shell into a mold, and introducing an uncured blended mixture of unsaturated thermosetting polymeric backing material and cross-linking promoter into the mold to force the backing material to directly coat the non-finish side of the shell.