Abstract: The filter, typically an air cleaning filter, has a frame element, preferably rectangular or square, retaining a plurality of adjacently located filter bags (4). The filter bags, themselves, are retained in the frame by bag-supporting ribs (6) which are folded from blanks (11, 11') in zig-zag fashion to define a central folded part 9, and two lateral folded portions (10, 10"10). To assemble the filter, adjacent filter bags are inserted and then clamped between the central portion and a lateral folded portion, and held together for example by adhesives, staples, or the like. The ends of the rib structures (6) define support legs (12, 12") which are secured to the frame element (1). The position of the ribs (6) determines the spacing of the filter bags (4). A spacing comb (14) formed with slits (16) determines the spacing between the opening of adjacent filter bags. The structure permits easy matching of filter bags to different dimensions of frame elements.

Abstract: An atomizer includes a housing that has a plurality of atomizing nozzles which will atomize a solution containing small particles that are to be carried in an output aerosol. The atomizer nozzles are surrounded by a ring-like surface against which the atomized material impinges to collect large droplets and to cause secondary atomization of the liquid impinging on the ring-like surface. The ring-like surface can have many different cross-sectional configurations for obtaining different results in secondary atomization and droplet collection.

Abstract: A humidifier comprising a bucket housing, a fan for producing a flow of air between an inlet port and an outlet port defined by the humidifier, a motor having a shaft disposed within the humidifier, and an impeller assembly coupled to the shaft of the motor, the impeller assembly comprising a hollow stem extending into the bucket housing and having longitudinal ribs disposed within the stem, and a disk disposed on an upper end of the stem, the disk defining an inner annular shoulder, an outer annular shoulder, a circumferential edge and a plurality of circumferentially spaced apertures disposed between the inner and outer annular shoulders.

Abstract: A submersible liquid circulation apparatus comprises an upright open-ended draft tube and a bubble generator. The bubble generator is coupled to the exterior side of the draft tube, so that it continuously generates bubbles which are introduced into the draft tube for propelling the liquid material up through the draft tube. This continuous and cyclic movement of bubbles inside the draft tube facilitates continuous circulation and mixing of the liquid. A gas supply means is coupled to the bubble generator for supplying the necessary gas to generate the bubbles. The elongated draft tube comprises an upper section and a lower section separated by a slight gap. Thus, liquid entering the inlet end of the lower section is propelled upward and across the gap separating the two sections and is ultimately expelled through the outlet end of the upper section. This gap provides an additional inlet point for liquid located at a point above the bottom of the digester, to flow directly into the draft tube.

Abstract: A mass transfer or heat exchange column is provided with a vapor distributor which circulates a vapor stream about the inner periphery of the column. The vapor stream is discharged from the distributor through an at least partially open bottom and, optionally, a plurality of spaced apart outlet ports in an inner annular wall of the distributor. A deflector extends upwardly along the inner annular wall to deflect the vapor stream away from a circumferential flow path along the inward face of the wall. The deflector may also extend outwardly under the flow channel to deflect, in a radially inward direction, vapor exiting the flow channel through the open bottom of the distributor.

Abstract: A limitation device which limits post-adjustment rotation of an adjustment screw (10) on single adjustment screw carburetors (20). In one embodiment, the limitation device uses a limiter cap (100, 200) removably attached to the adjustment screw (10) which works in conjunction with a limiter stop (300, 400) attached to the carburetor. In a second embodiment, the limitation device uses a limiter cap (700) removably attached to the adjustment screw (10) which works in conjunction with a plate (600) attached to the carburetor. In either embodiment, the limiter cap (100, 200, 700) presents a first and second rotational stop (110, 210) which cooperates with at least one rotational stop (304, 306, 404, 406, 606) on the limiter stop (300, 400) or plate (600). A special tool and method is also disclosed for installing and removing the device from the carburetor.

Abstract: A portable humidifier assembly adapted for use in association with a forced air heat vent, the apparatus comprising: an inner frame comprising a rear crossbar, a front crossbar and a plurality of semicircular ribs affixed therebetween, the front crossbar of the inner frame including a coupling device, an outer frame including a rear crossbar, a front crossbar and a plurality of semicircular ribs affixed therebetween, the rear crossbar of the outer frame being hingedly coupled to the rear crossbar of the inner frame, the front crossbar of the outer frame including a coupling device; and a sponge adapted to retain water, in an operative orientation the sponge being soaked with water and placed between the ribs of the inner and outer frames, the sponge being locked in placed by hingedly closing the outer frame upon the inner frame and coupling the front cross bars of the respective frames together.

Abstract: A construction of a fuel supply pipe with a proximal end press-fit portion formed of metal and a metering tip portion formed of synthetic resin. The metering tip portion, formed with a fuel jet therein, is telescopically connected to the proximal end press-fit portion of the fuel supply pipe to provide a stable fuel supply in a rotary throttle valve type carburetor.

Abstract: An air supply apparatus for pond fisheries which includes a framework, the framework consisting of two upright tubes, two extension tubes respectively and slidably inserted into the upright tubes, lock means to lock the extension tubes in the upright tubes at the desired elevation, a top transverse rack connected between the extension tubes at a top side, a bottom cross tube connected between the upright tubes at a bottom side by bends, and a cross bar connected between the upright tubes above the bottom cross tube; float means fastened to the top transverse rack for supporting the framework in water in a rearing pond; an air pump means mounted on the top transverse rack, and having an air output port connected to the bottom cross tube by an air tube; a plurality of air distributors respectively connected to the bottom cross tube for permitting air to be forced from the air pump means into water in the rearing pond in the form of air bubbles; and a baffle assembly adjustably fixed to the framework above the b

Abstract: A method for improving water transport and reducing shrinkage stress in membrane humidifying devices, and membrane humidifying devices and systems employing such devices that achieve enhanced and stable humidification performance, are disclosed. The inventive membrane humidifying device is made up of at least one membrane cell and means for introducing water into the cell(s). The membrane cell(s) includes at least one sheet of a hydrophilic membrane and at least one rigid screen, positioned adjacent to at least one membrane sheet. The cell(s) is assembled when the membrane sheet(s) is in a dry, contracted state and the assembled cell(s) is then exposed to an elevated temperature/vacuum treatment. As a result, the surfaces of the membrane sheet(s) permanently conform to the contours of an adjacent rigid screen.

Abstract: A misting assembly for an exhaust gas scrubber tower which includes an elongated central member, a plurality of perforated baffle plates affixed to the elongated central member at spaced apart distances thereto such that the perforations from each baffle plate are out of alignment with those of the next higher baffle plate. An inner tubular ring and an outer tubular ring are affixed to each baffle plate wherein the diameter of the inner tubular ring and of the outer tubular ring are different from the diameters of the inner and outer tubular rings of the other baffle plates. Spray nozzles are affixed to each ring at regular radially spaced apart locations around each of said inner and outer rings such that the integrated density of fog generated by said spray nozzles over all of said baffle plates is substantially uniform.

Abstract: An apparatus comprising a liquid-vapor contact column housing an array of vertically spaced liquid-vapor contact trays and an arrangement of downcomers that conduct liquid from tray-to-tray down the array. In a vapor space between the trays there are liquid-vapor disengagement devices having vapor passages therethrough and defining surfaces for the flow thereacross of any liquid disengaged from vapor ascending the column. Each of the devices is typically provided by a sheet of expanded metal and has an outlet edge in liquid flow communication with the next lower tray via the downcomer.

Abstract: A metering device for a carburetor which permits liquid fuel flow in a primary fuel supply circuit to be adjusted without disassembly of the carburetor. The adjustable metering is accomplished prior to mixture of the liquid fuel with air in the metering device. The metering device is particularly constructed to achieve short and direct paths for transport of fuel to the air stream flowing through the carburetor to the manifold. A fuel bowl side bleed permits greater atomization of the fuel to produce higher percentage burn of the fuel.

Abstract: A metal organic compound container apparatus for containing a liquid metal organic compound, receiving a carrier gas, and producing a carrier gas stream saturated with vapor of the metal organic compound including a container for containing a liquid metal organic compound; an inlet pipe for introducing a carrier gas into the container, the inlet pipe having an end for immersion in the metal organic compound; a carrier gas flow rate controller for controlling carrier gas flow into the inlet pipe; a first exhaust pipe for exhausting carrier gas from the container at a first flow rate, the first exhaust pipe having an end not contacting the metal organic compound; a first gas flow rate controller for controlling one of pressure and the first flow rate of the carrier gas through the first exhaust pipe; a second exhaust pipe for exhausting carrier gas from the container at a second flow rate, the second exhaust pipe having an end not contacting the metal organic compound; and a second gas flow rate controller for

Abstract: An aeration/mixing system for applying air or another gas to wastewater or another liquid. A main air supply pipe receives air from a blower and directs the air to a plurality of aeration modules each including a submerged conduit and a plurality of diffusers on the conduit. Flexible hoses connect the main pipe with the conduit of each module. In one form of the invention, a flexible line connected with each module has a sliding connection with a ballast block and may be pulled tautly and secured at the surface to hold the module down in the basin. Retrieval of the module for maintenance requires only that the line be released so that the buoyancy of the module floats it upwardly. A modified embodiment includes an inflatable bladder on each module which can be inflated to cause the module to float upwardly for retrieval.

Abstract: A fire resistant industrial water cooling tower (20) is disclosed having normally closed passive vent structure (28) which vents the interior of the tower (20) above the area which is undergoing combustion to enhance suppression of the fire. The vent area is dependent upon the location and extent of the fire. The vent structure (28) comprises means presenting a series of vent openings which are closed by a component (88) that responds to flames and/or hot products of combustion to move out of blocking relationship to the opening thus venting the interior of the tower. In preferred embodiments, the vent includes a panel member (82) having a series of openings (83) therein which are either covered or blocked by a synthetic resin member (88) formed of a material which will burn and has a relatively low melt temperature thereby causing the material to either burn or rapidly melt when subjected to flames and/or hot products of combustion resulting from a fire in a part of the tower.

Abstract: An arrangement for filling an anaesthetic vaporiser, the arrangement comprising a filling device to be connected to a transport package for an anaesthetic agent, the filling head of the device being attachable to an opening in the vaporiser. The arrangement comprises a fastening means for clamping the filling head against the sealing surface of conduits leading to the opening, and a valve means arranged to open when the filling head is in the clamped position against the sealing surface of the conduits leading to the opening and thus arranged to allow the flow of the anaesthetic agent between the vaporiser and the transport package and the flow of the substitute gas in the opposite direction between the transport package and the vaporiser.

Abstract: An aerator designed for aeration of a live bait well and comprising a centrifugal type pump comprising an impeller and an impeller casing having an inlet and an outlet, wherein the inlet is in communication with water from the bait well and also with air via an air conduit. The air conduit is provided with metering means for metering the amount of air entering the impeller and for optimizing the mincing of air in the fluid (which is a different technical phenomena from simply pumping an air/water mixture). The bubbles produced in accordance with the present invention are so fine as to give the water a fogged appearance. The unusually high level of oxygenation makes it possible for the first time to pack two to four times as many bait fish into a live well as had previously been considered possible.

Abstract: An apparatus for generating foam includes a power source such as an internal combustion engine mounted in a frame for portable transportation of the apparatus. The power source drives an air compressor through an electric clutch which can disconnect the air compressor and a water pump. The water pump generates flow of the water under pressure through a duct system either to a water discharge valve or to a foam discharge valve. The foam is generated by injecting into the water stream a surfactant which is injected by reciprocating valve arrangement operated by flow of the water. The flow is controlled by a maximum flow orifice, a minimum flow orifice and an adjustable valve. The air compressor supplies a surge tank and the air is passed from the surge tank through a pressure regulator to a mixing device where the water and surfactant is mixed with the air to generate the foam.

Abstract: A packing element for enhancing contact between a first fluid having a predominant direction of flow and a second fluid comprises a plurality of adjacently disposed layers of material, each of which is disposed generally in a plane aligned with the direction of flow. The layers each include a plurality of rows of fluid-deflecting corrugations that project out of the plane of the layer, and each of the corrugations include a pair of oppositely-inclined surfaces that define an elongated vertex oriented in a diagonal direction with respect to the predominant flow direction. In one configuration, each corrugation is arranged so that its pair of surfaces are at least partially offset from each other along the diagonal direction. In another configuration, the corrugations have two pairs of oppositely-inclined surfaces that define the elongated, diagonal vertex, and the surfaces in each pair are at least partially offset from each other along the diagonal.