Abstract: A large capacity HEPA filter is produced in which a layered filter medium unitarily formed by an upstream non-woven fabric which can remove 70 to 90% of 0.3 &mgr;m particle and a downstream non-woven fabric which can remove 99.9% of 0.3 &mgr;m particle or more is provided and a shape of a layered filter medium is a minipleat shape in a thickness direction and an entire shape in the thickness direction is a plurality of continuous Vs. Also, a dust collecting device having such a large capacity HEPA filter is produced. An air intake device for a gas turbine is provided with such a dust collecting device.

Abstract: A fan guard 18 of an outdoor unit comprises an outer frame, a plurality of radiating ribs 27, and a plurality of annular ribs 28. The outer frame is disposed around the outer circumference of a lid member that is an air conditioner discharge port. The plurality of radiating ribs 27 are formed such that they radiate in the outer radial direction from the vicinity of the center of the outer frame 26 to the outer frame 26, and are curved in the rotational direction of a ventilation fan. The plurality of annular ribs 28 are integral with the radiating ribs 27, are concentrically disposed at a predetermined spacing in the radial direction around the center of the rotational axis of the ventilation fan, and are formed such that at least those in an outer circumference are slanted toward the outer radial direction to follow the flow of the air blown from the ventilation fan.

Abstract: Disclosed is a diverter for directing particles that cause wear in a slurry pump away from the stationary face of a slurry pump. The diverter comprises a protrusion that directs particles back into the collector of the pump to reduce the number of particles that go through the impeller nose gap. The protrusion extends from the suction liner face to the front shroud whereby particles can be deflected away from the suction liner face.

Abstract: A hot swap fan tray with fan guard is disclosed. The present invention includes a frame, at least one fan and at least one fan guard. The frame includes a plurality of first holes. The fan includes a plurality of second holes. The fan guard further includes a plane and at least one protrusive terminal. The protrusive terminal projects from the plane and includes at least one bend. During the protrusive terminal passes through the first hole and the second hole, the bend changes shape and then returns original shape elastically, thereby the bend attaching said fan and said fan guard to said frame.

Abstract: An efficient axial fan has housing with a square inlet opening and a round outlet opening, a fan assembly with a drive motor and a propeller coupled thereto. The entrance of the housing is provided with a shutter assembly disposed horizontally or vertically across the entrance of the fan and comprising a plurality of vanes including a central operative vane operated by a centrifugal shutter mechanism secured to one end of the propeller shaft, opposite to the propeller and adjacent to the operative central vane of the shutter assembly. The centrifugal shutter mechanism is normally provided with a hermetic housing comprising a pair of radial masses operatively connected by means of a pair of pivoting arms to an axial sliding reciprocating actuator which is disposed adjacent to the shutter central operative vane.

Abstract: A pitot tube inlet for the pitot tube of a centrifugal pump is configured to improve pump efficiencies when processing fluids that have a solids content the type or character of which causes the solids to accumulate along the inner peripheral surface of the rotor of the pump. The pitot tube inlet is configured to contact and remove the accumulated solids from the rotor to lessen the drag on the rotor, to lessen degradation of the pitot tube and to improve pump efficiencies.

Abstract: An energy absorber and deflection device for deflecting engine debris fragments from their tangential trajectory from a core of a gas turbine engine. The device includes a deflection plate radially spaced from a protected portion of the periphery of the rotor, adapted to cover the protected portion in a closed position, and to swing open about a fore edge of the deflection plate to a deployed position. A flexible joint secures the fore edge of the deflection plate to the engine and a frangible joint secures an aft edge of the deflection plate to the engine. In the case of a turbofan engine, the deflector plate may form part of the inner bypass duct surface to deflect debris to exit aft through the bypass duct, and in turboshaft and turboprop engines the deflector plate serves to deflect debris and reduce debris velocity to contain debris within the engine cowling or nacelle.

Abstract: A fan grill for use with a fan associated with an inlet ring is configured to flush mount in an inlet ring and to serve as a safety guard to help prevent finger insertion into, and to help inhibit debris from entering a fan. The fan grill can impede and disturb gas flow to a fan less than by using a non-flush mounted grill or guard. The fan grill includes radial ribs, concentric circular ribs and radial support ribs to form a grate, and tabs. The tabs and the radial support ribs are configured to bias the fan grill against a wall of an inlet ring to securely connect the fan grill in the inlet ring. The fan grill can be readily installed and securely connected to inlet rings or housings of existing fans.

Abstract: A fan grill for use with a fan associated with an inlet ring is configured to flush mount in an inlet ring and to serve as a safety guard to help prevent finger insertion into, and to help inhibit debris from entering a fan. The fan grill can impede and disturb gas flow to a fan less than by using a non-flush mounted grill or guard. The fan grill includes radial ribs, concentric circular ribs and radial support ribs to form a grate, and tabs. The tabs and the radial support ribs are configured to bias the fan grill against a wall of an inlet ring to securely connect the fan grill in the inlet ring. The fan grill can be readily installed and securely connected to inlet rings or housings of existing fans.

Abstract: A device which can be utilized to temporarily seal substantially any opening on a turbine which is being assembled or repaired. The foreign material exclusion device of the present invention advantageously maintains fail-safe integrity of desired portions of a turbine. Protection of the sensitive areas of a turbine prevents possible hazardous malfunctions or explosions of a turbine. The foreign material exclusion device is substantially elastic or resilient and can be compressed to fit into a desired opening and can be reexpanded to provide a snug fit about an opening.

Abstract: “Electric pump for the re-circulation of water”. It includes a suction chamber (1) connected by a communication conduit (3), as well as a filter vessel (5), into which the water drawn in enters by an open upper inlet (6) and exits by multiple small orifices made in its wall (7) and/or its lower base (8). The communication conduit (3) is arranged at a lower level to that of the filter vessel lower base. Moreover, below the lower base (8) of the filter vessel (5) and the impeller assembly (9) an ample hollow space (16, 17) is arranged and is capable of containing a relatively high volume of water. Applicable to the re-circulation and filtering of swimming pool water.

Abstract: Disclosed is a composite heat-dissipating system and its used fan guard which can impart a supercharging function to the heat-dissipating fans of the composite heat-dissipating system for efficient heat dissipation and reduces the noise generated when the heat-dissipating fans are operated. The fan guard includes a frame and a set of guard blades arranged inside and fixed onto an inner surface of the frame. The fan guard can be arranged upstream or downstream of the rotor blades of the heat-dissipating fans and assembled with the heat-dissipating fans in series or in parallel to supercharge the airflow out of the heat-dissipating fans.

Abstract: A filter pump for a pool includes, a motor, a filter, a water intake connecter and a water outlet connecter for combining water pipes. The water intake and outlet connecters are respectively fixed with a connector having male threads outside and a recessed stepped surface inside to make up a receiving space between the connector and the water intake or the water outlet connecter. The water pipe has its end formed with two annular projecting ribs for fitting a rotatable locking cover with female threads therein. After the water pipe is fitted with the water intake or the water outlet connecter, the locking cover is threadably mounted on the connector, letting the water pipe inserted in the receiving space and closely pressed by the locking cover.

Abstract: A turbine motor of the present invention includes a noise reduction system. The turbine motor includes a housing, a motor, a cooling fan, an air intake assembly, an exhaust assembly, an air intake motor cover assembly and a conduit. The motor is positioned in the housing and the motor has an air intake. The cooling fan is attached to the motor and is for cooling it. The air intake assembly is proximate to the cooling fan and is attached to the housing. The exhaust assembly is proximate to the cooling fan and is attached to the housing. The air intake motor cover assembly is proximate to the air intake on the motor and is attached to the housing. The conduit extends between the air intake assembly and the air intake motor cover.

Abstract: An apparatus and a process are provided for impingement cooling of a component exposed to heat in a flow machine. The component includes a wall section on at least one side of which at least one impingement air flow impinges, the air flow passing through a flow channel within a surface element arranged spaced apart from the wall section and striking against the wall section to be cooled. The flow channel has an inlet aperture and an outlet aperture, with the outlet aperture directly facing toward the wall section to be cooled, and the inlet aperture has a throughflow cross section which is smaller than the throughflow cross section of the outlet aperture.

Abstract: A hot swap fan tray with fan guard is disclosed. The present invention includes a frame, at least one fan and at least one fan guard. The frame includes a plurality of first holes. The fan includes a plurality of second holes. The fan guard further includes a plane and at least one protrusive terminal. The protrusive terminal projects from the plane and includes at least one bend. During the protrusive terminal passes through the first hole and the second hole, the bend changes shape and then returns original shape elastically, thereby the bend attaching said fan and said fan guard to said frame.

Abstract: A compound vacuum pump includes a regenerative section and a Holweck section. An annular abutment is formed on the radially innermost rotating cylinder of the Holweck section. The abutment acts to cause dust and foreign particles entering an inlet of the pump to be trapped before entering an inlet of the regenerative section. A circular barrier may be used with the abutment to assist with trapping the dust and foreign particles.

Abstract: A position shifting plate for an air blowing device includes a casing having an inlet defined in an underside of the casing and an outlet defined in an end of the casing. An annular neck extends from the underside of the casing and encloses the inlet. A gap is defined between the underside of the casing and the neck. A guide member extends from the underside of the casing. A shifting plate has a grated portion and a hole. A flange extends from the shifting plate and two rails extend inward from the flange so as to be movably inserted in the gap. The shifting plate movably contacts the guide member to shift the hole or the grated portion to cover the inlet of the casing.

Abstract: A multi-use clean air fan and fan motor mount assembly comprising a bifurcated conical air inlet and blown air deflector, a fan motor mount, motor mount supports, a fan motor and a fan, the bifurcated conical air inlet and blown air deflector having a long outer wall, and a short inner wall, the fan motor mount suspended within the bifurcated conical air inlet and blown air deflector by motor mount supports fastened between the outer wall of the bifurcated conical air inlet and blown air deflector and the fan motor mount, an aperture defining a central opening in the top of the bifurcated conical air inlet and blown air deflector, the fan and fan motor having a common longitudinal axis with the longitudinal axis of the bifurcated conical air inlet and blown air deflector, the fan having a series of vanes extending outwardly from the central longitudinal axis of the fan, the inside of the long outer wall of the bifurcated conical inlet and blown air deflector surrounding more than half of the longitudinal heig

Abstract: An air cleaner includes a centrifugal fan runner equipped with backward blades, a core plate connected to an axis of a motor; and a side plate being opposing the core plate. The backward blades, being inclined in an anti-rotational direction thereof, are provided at a distance in a circumferential direction, and the backward blades are bent in a position at distance of about ½-1/(3.5) of a length of the blade from an outer periphery thereof, so that an outlet portion thereof is inclined into a direction of rotation of the blade. An outlet angle of the outlet portion with respect to a tangential direction on an outer periphery of said side plate lies from about 40 degree to about 60 degree.

Abstract: A hydrodynamic machine such as an agitator or a pump has a seal at the fluid medium side in the form of a sliding ring in a coaxial opening in the impeller wheel hub. To prevent particle deposits and blockages in the region of the seal the hub engages into a pot-shaped opening in the housing, forming a conical outwardly enlarging annular gap. Formed on the outside of the hub is a spiral means which when the hub rotates produces a fluid flow outwardly of the annular gap to counteract a deposit of contaminating matter such as particles and fibers from the fluid in the annular gap and thus also at the seal.

Abstract: A fan having an internal rotor motor with a rapid fixing device for a fan wheel, for both centrifugal and axial fans, including a casing (12) containing an electric motor with an internal rotor (13) connected to at least one fan wheel (14, 14′) and being enclosed by a protection grid (15) wherein a first coupling element (17, 17′), attached to one end of a motor shaft (16) of the electric motor (13) and a second coupling element (23, 23′) in one portion of at least one fan wheel (14, 14′), wherein the first and second coupling elements (17, 17′, 23, 23′) are complementary to each other and have a polygonal type section, and are fixed by means of reciprocal blocking means (26, 27, 29).

Abstract: A turbine motor of the present invention includes a noise reduction system. The turbine motor includes a housing, a motor, a cooling fan, an air intake assembly, an exhaust assembly, an air intake motor cover assembly and a conduit. The motor is positioned in the housing and the motor has an air intake. The cooling fan is attached to the motor and is for cooling it. The air intake assembly is proximate to the cooling fan and is attached to the housing. The exhaust assembly is proximate to the cooling fan and is attached to the housing. The air intake motor cover assembly is proximate to the air intake on the motor and is attached to the housing. The conduit extends between the air intake assembly and the air intake motor cover.

Abstract: An intake shield (3) comprises a hollow chamber (4) which locates over the intake (2) of a gas turbine engine (1). The chamber (4) has one or more walls (5) which are pervious to air but impervious to vortices and debris.

Abstract: A fan guard 18 of an outdoor unit comprises an outer frame, a plurality of radiating ribs 27, and a plurality of annular ribs 28. The outer frame is disposed around the outer circumference of a lid member that is an air conditioner discharge port. The plurality of radiating ribs 27 are formed such that they radiate in the outer radial direction from the vicinity of the center of the outer frame 26 to the outer frame 26, and are curved in the rotational direction of a ventilation fan. The plurality of annular ribs 28 are integral with the radiating ribs 27, are concentrically disposed at a predetermined spacing in the radial direction around the center of the rotational axis of the ventilation fan, and are formed such that at least those in an outer circumference are slanted toward the outer radial direction to follow the flow of the air blown from the ventilation fan.

Abstract: A barrier filter for use in an helicopter to remove contaminants from intake air prior to delivery to an engine. The helicopter has an intake and a peripheral external surface adjacent to the intake. The filter includes a pleated filter element mounted flush across the intake such as to meet the contour of the peripheral external surface. The filter element comprises a porous filter media and having a surface area such that a calculated speed of air flowing through the filter, when the engine is operating at take off power (TOP) or military intermediate rated power (IRP), is less than about 30 ft/sec. The filter may be retrofit into helicopters having other contaminant removal systems. Preferably, the filter is positioned such that intake air is delivered to the engine at a pressure which is substantially independent of whether the helicopter is moving in a forward direction or hovering with no forward motion.

Abstract: In a fluid pump device, a filter is secured to a housing. A meshed portion of the filter substantially covers an inlet opening of the housing. Each engaging projection of the filter is engaged with a corresponding engaging recess of the housing in a direction perpendicular to an axial direction of an impeller. Arm portions of the filter substantially perpendicularly extend with respect to a meshed portion of the filter and are resiliently flexible in the direction perpendicular to the axial direction of the impeller. Each coupling projection of the filter is provided between adjacent two arm portions of the filter and is engaged with a corresponding coupling recess of the housing in the axial direction of the impeller.

Abstract: An inlet protector or guard that prevents jamming and clogging of a molten metal pump. The guard includes a flat surface having a central opening that accepts a shaft of the molten metal pump. A wall extends from the periphery of the flat surface along a longitudinal axis of the shaft. The wall is sized to fit within an inlet opening of the pump. The wall includes a plurality of openings, forming an inlet through which molten metal can enter a base of the pump. The plurality of openings are small enough to prevent solid particles that are larger than a distance between an impeller of the pump and a pump chamber from entering the pump and large enough to prevent the pump from clogging.

Abstract: One or more particle arrestor rings are mounted in a curved radial flow portion of a gas turbine annular flow passage. The arrestor rings block line of sight paths between the turbine wheel and the annular flow passage outlet. Thus, the arrestor rings substantially inhibit relatively high energy particles from exiting the gas turbine housing, thus substantially inhibiting collateral damage to surrounding equipment and structure.

Abstract: A combined pump and filter assembly having backwashing apparatus for the filter assembly and apparatus for offsetting the tendency for an increase in pump output flow resistance to cause an increase in fluid flow to the backwashing assembly.

Abstract: A ceiling fan having a down rod assembly, a motor, fan blades, an upper body, a hub assembly, and a cage. The cage provides an open enclosure for protecting the motor. The hub includes a hub canister and a hub cover. A lighting kit includes a lighting fixture within the hub canister and a lighting cover that is interchangeable with the hub cover.

Abstract: Disclosed is a composite heat-dissipating system and its used fan guard which can impart a supercharging function to the heat-dissipating fans of the composite heat-dissipating system for efficient heat dissipation and reduces the noise generated when the heat-dissipating fans are operated. The fan guard includes a frame and a set of guard blades arranged inside and fixed onto an inner surface of the frame. The fan guard can be arranged upstream or downstream of the rotor blades of the heat-dissipating fans and assembled with the heat-dissipating fans in series or in parallel to supercharge the airflow out of the heat-dissipating fans.

Abstract: A centrifugal blower comprises an impeller; and a casing, having an intake port disposed at a region opposing the air inlet portion of impeller, for accommodating the impeller. The casing is provided with a port cover constituted by rod-shaped members which are arranged in a net structure, in order to cover the intake port of casing. A trailing edge portion of the rod-shaped members is formed with a slanted surface. Due to this slanted surface, the flow of air passing through the port cover so as to flow into the air inlet portion is smoothly deflected away from the axis of rotation of impeller. As a consequence, swirls are restrained from occurring, whereby a sound-insulating effect is exhibited.

Abstract: Vibrations generated by a vacuum pump are prevented from propagating to external equipment such as an electron microscope. A casing (a separate casing portion and a casing main body) that houses a stator, stator blades, a rotor portion, and rotor blades as an exhaust function portion is connected to an inlet port portion in which an inlet port for sucking in a gas from the outside is formed, through an elastic member. An suction space between the casing and the inlet port portion is sealed by a bellows cylinder sealing means, and motion regulating members and motion regulating members and which regulate the amount of separation between the inlet port portion and the casing, and change shape due to relative motion between the two, are formed between the inlet port portion and the casing.

Abstract: A frame (4a) is provided around the perimeter of the air outlet (2a) of the fan (6). The frame (4a) includes a plurality of board-shaped ribs (41, 41 . . . ) extending radially outward from the vicinity of the center of the frame (4a) in the direction of the radius of the fan (6). The frame (4a) also includes a plurality of cylindrical ribs (42, 42 . . . ) integrated with the plurality of board-shaped ribs (41, 41 . . . ), and arranged concentrically around the rotation axis (O-O′) of the fan (6) at predetermined intervals in the direction of the radius of the fan (6). The board-shaped ribs (41) are curved outward in the direction of rotation of the fan (6) and inclined in the direction of air flowing from the fan (6).

Abstract: The cylindrical compressor casing of a gas turbine engine has a plurality of radially inwardly and axially rearwardly opening anti-surge grooves disposed on a radially inner surface thereof whereby foreign objects ingested into the engine and entering the grooves are free to move axially rearwardly of the engine.

Abstract: “Electric pump for the re-circulation of water”. It includes a suction chamber (1) connected by a communication conduit (3), as well as a filter vessel (5), into which the water drawn in enters by an open upper inlet (6) and exits by multiple small orifices made in its wall (7) and/or its lower base (8). The communication conduit (3) is arranged at a lower level to that of the filter vessel lower base. Moreover, below the lower base (8) of the filter vessel (5) and the impeller assembly (9) an ample hollow space (16, 17) is arranged and is capable of containing a relatively high volume of water.

Abstract: A fan filter unit includes a housing having a side wall and a top wall with a bell mouth serving as an air inlet and an open bottom to which a filtering net is attached to serve as an air outlet. A centrifugal fan is arranged in the housing to drive the air from inlet. The fan assembly has an output port for driving an air flow toward the air outlet. A guide plate is arranged in the housing for guiding the air flow along the path from the fan assembly to the air outlet. A sound-absorbing structure including a plurality of wedge-shaped elements made of a sound-absorbing material is attached to the side wall. The wedge-shaped elements are arranged in a line for effectively reducing noise level caused by the operation of the fan assembly. A second line of wedge-shaped elements is optionally attached to the side wall with the wedge-shaped elements of the two lines alternating each other.

Abstract: A barrier filter for use in an helicopter to remove contaminants from intake air prior to delivery to an engine. The helicopter has an intake and a peripheral external surface adjacent to the intake. The filter includes a pleated filter element mounted flush across the intake such as to meet the contour of the peripheral external surface. The filter element comprises a porous filter media and having a surface area such that a calculated speed of air flowing through the filter, when the engine is operating at take off power (TOP) or military intermediate rated power (IRP), is less than about 30 ft/sec. The filter may be retrofit into helicopters having other contaminant removal systems. Preferably, the filter is positioned such that intake air is delivered to the engine at a pressure which is substantially independent of whether the helicopter is moving in a forward direction or hovering with no forward motion.

Abstract: A top-flow fluid pump that is made from a high-purity fluroplastic material is disclosed. The pump is used to circulate extremely corrosive fluids that are heated to temperatures of 160-180° C. through at least one filtration unit. The pump can be used in a semiconductor etching system. The pump utilizes the driven side of an impeller to generate a suction force that draws the corrosive fluid into a pumping chamber from at least one inlet port. A pedestal support or shaft sleeve, through which a motor drive shaft extends, is modified to create an annular passageway that permits the corrosive fluid to enter the pumping chamber from the inlet. With the inlet design of the present invention, a drive motor seal assembly is no longer subjected to corrosive fluid because the seal assembly is positioned on the suction side of the impeller. In a “dead headed” condition, the corrosive fluid flow stops completely as the fluid within the pumping chamber simply remains in shear.

Abstract: In a turbine having a rotor and a plurality of stages, each stage comprising a row of buckets mounted on the rotor for rotation therewith; and wherein the buckets of at least one of the stages are cooled by steam, the improvement comprising at least one axially extending cooling steam supply conduit communicating with an at least partially annular steam supply manifold; one or more axially extending cooling steam feed tubes connected to the manifold at a location radially outwardly of the cooling steam supply conduit, the feed tubes arranged to supply cooling steam to the buckets of at least one of the plurality of stages; the manifold extending radially beyond the feed tubes to thereby create a debris trap region for collecting debris under centrifugal loading caused by rotation of the rotor.

Abstract: An inlet protector or guard that prevents jamming and clogging of a molten metal pump. The guard includes a flat surface having a central opening that accepts a shaft of the molten metal pump. A wall extends from the periphery of the flat surface along a longitudinal axis of the shaft. The wall is sized to fit within an inlet opening of the pump. The wall includes a plurality of openings, forming an inlet through which molten metal can enter a base of the pump. The plurality of openings are small enough to prevent solid particles that are larger than a distance between an impeller of the pump and a pump chamber from entering the pump and large enough to prevent the pump from clogging.

Abstract: The present invention 10 discloses a wheel-like member 30 consisting of a central circular body member 18 having a plurality of spokes 22 radiating from its outside perimeter that attach to the inside perimeter of an outer circular body member 24. On the outside perimeter of the outer circular body member a plurality of hinges 26 with paddles 16 are attached thereto that can only open to a pre-determined angle “A” from the wheel 30 that ensures water current 14 is caught by the paddles on only one side of the wheel which causes the wheel to rotate in only one direction. The kinetic energy stored in the wheel 30 while rotating is harnessed through a drive shaft 34 connected to the central circular body member 18 that connects to a generator 36 placed perpendicular to the central circular body member 18.

Abstract: An impeller for a molten metal pump includes an exterior bearing mounting surface that is trued about the axis of the impeller and drive shaft assembly. Another impeller arrangement includes a pumping chamber having an axis offset from the impeller axis to achieve a volute pumping arrangement. In a further arrangement, the impeller is provided with peripheral pumping chambers intersecting the peripheral surface of the impeller. In each of the foregoing arrangements, a plate may be fixed to the pump drive shaft at a location axially spaced from the impeller inlet to screen debris and to pump molten metal to the impeller inlet.

Abstract: The cylindrical compressor casing of a gas turbine engine has a plurality of radially inwardly and axially rearwardly opening anti-surge grooves disposed on a radially inner surface thereof whereby foreign objects ingested into said engine and entering said grooves are free to move axially rearwardly of the engine.

Abstract: A rotodynamic pump comprising a centrifugal impeller (11) provided within a volute body (7) and an emulsifier (17) provided in the region of an inlet of the volute body and rotatable with the centrifugal impeller for emulsifying material to be pumped.

Abstract: A fuel pump for a motor vehicle has an outlet duct leading to an internal combustion engine and a connection leading to an ejector, and two delivery chambers which are separate from one another. The delivery chambers are concentric so that one surrounds the other. The fuel pump is simple to construct and can be manufactured at favorable cost.

Abstract: Device for preventing the penetration of corrosively acting salt particles into the generator and gear area of an offshore wind power plant, with an air pressure generator for introducing air under an overpressure into at least a substantially closed part of the generator and gear area, and a filtering device connected upstream of the generator and gear area in the flow direction for the separation of moisture and salt particles from the air to be introduced into the area by the air pressure generator.

Abstract: A protective guard for use with a fan or other mechanism includes main support members, perimeter support members, main screen members, and perimeter screen members with joints formed between the support members and screen members to inhibit access thereto. The support members define openings through which the screen members slidably extend to form the joints without welds. In one embodiment, the support members include unitary bars. In another embodiment, the support members comprise first and second bars having legs, which define recesses. When the upper and lower bars are attached, the recesses define openings through the support members for receiving the screen members.

Abstract: In a fluid pump device, a filter is secured to a housing. A meshed portion of the filter substantially covers an inlet opening of the housing. Each engaging projection of the filter is engaged with a corresponding engaging recess of the housing in a direction perpendicular to an axial direction of an impeller. Arm portions of the filter substantially perpendicularly extend with respect to a meshed portion of the filter and are resiliently flexible in the direction perpendicular to the axial direction of the impeller. Each coupling projection of the filter is provided between adjacent two arm portions of the filter and is engaged with a corresponding coupling recess of the housing in the axial direction of the impeller.