Abstract: An electric vacuum cleaner according to the present invention includes a cleaner main body 16, and a suction unit 24 which is rotatably disposed at the bottom of the cleaner main body 16 and includes a suction port 23 and a rotary brush 25. The cleaner main body 16 includes a dust collecting chamber 19, and a fan chamber 18 equipped with an electric fan 17 disposed at the bottom thereof. A handle 21 having a grip portion 20 and a control circuit board 22 are installed above the dust collecting chamber 19. Components such as the handle 21 and the electric fan 17 are installed at the rear of the cleaner main body 16. With this configuration, the vacuum cleaner is prevented from falling down when it is set upright. Further, the safety in use of the vacuum cleaner will be improved. Also, the user is able to easily use the vacuum cleaner. Furthermore, it is possible to finish assembling the component parts only at the rear of the vacuum cleaner.

Abstract: A vacuum cleaner includes a first housing defining a cyclonic airflow chamber and a second housing defining a main suction opening that is in communication with an inlet of the cyclonic chamber. A suction source has a suction airstream inlet in communication with an outlet of the cyclonic chamber, and establishes a suction airstream that enters said main suction opening, passes through said cyclonic chamber, and passes to an outlet of said suction source. A substantial portion of particulates entrained in the suction airstream are separated therefrom when said suction airstream moves in a cyclonic fashion through the cyclonic chamber.

Abstract: The invention provides a cleaner head assembly for a vacuum cleaner comprising a cleaner head body pivotably attachable to a main body of a vacuum cleaner and a brush housing pivotably mounted on the cleaner head body, the brush housing having a suction opening and a brush bar mounted therein, wherein the brush housing comprises a sealed unit connectable to a vacuum cleaner air inlet via a conduit separate from the cleaner head body. The arrangement allows the brush housing to be doubly articulated with respect to the main body of the vacuum cleaner whilst the suction opening remains in a horizontal plane without requiring the use of seals which must be able to accommodate the articulation of the brush housing.

Abstract: A vacuum cleaner includes a cyclonic airflow chamber that facilitates the separation of contaminants from a suction airstream. The airflow chamber includes a chamber inlet and a chamber outlet, with the chamber inlet being fluidically connected with at least one of a suction nozzle and an above-the-floor cleaning tool. An exhaust filter housing includes a suction duct and an exhaust plenum, with the suction duct communicating with the chamber outlet. A suction source housing includes an open end communicating with the exhaust plenum and a closed end. A suction source is positioned within the suction source housing to define an annular exhaust flow passageway surrounding the suction source from the housing closed end to the housing open end. The suction source includes a suction inlet communicating with the suction duct and an exhaust outlet communicating with the housing closed end.

Abstract: An upright vacuum cleaner (10) includes an upper housing (12) and a nozzle base (14). An underside (20) of the nozzle base includes a main suction opening (26) formed therein which is in fluid communication with the upper housing via a hose assembly (28). The hose assembly is coupled to the nozzle suction opening via a coupling member (40). The coupling member is substantially cylindrical in shape and is dimensioned to be inserted into a receiving portion (42) of the nozzle base. The coupling member includes a first tapered end (60) dimensioned to be frictionally fit within a suction inlet (44) of the receiving portion. A second end (62) of the coupling member is configured to be supported on a rear wall (50) of the receiving portion. A quarter turn thread segment (72) is disposed on the coupling member's peripheral surface.

Abstract: A vacuum cleaner has a cyclone dust collector 4, arranged in a suction air passage, for separating dust by making sucked air into a whirling stream. The cyclone dust collector 4 has an inlet port 41a through which the sucked air is introduced, a dust collection chamber 41 for collecting separated dust, a lid 42 for opening and closing the dust collection chamber 41, an exhaust cylinder 44 through which the sucked air is discharged out of the dust collection chamber, and a shielding member 46 arranged below the exhaust cylinder 44. Dust is separated as a result of a whirling stream of air colliding with shielding ribs 46b and a circular portion 46a of the shielding member 46.

Abstract: An upright vacuum cleaner includes a nozzle assembly having a nozzle cavity and a canister assembly pivotally connected to the nozzle assembly. A dust bag is carried by the canister assembly. A dirty air pathway provides fluid communication between the nozzle cavity and dust bag. A suction generator generates a vacuum for drawing dirt and debris from the nozzle cavity, through the dirty air pathway to the dust bag. The dirty air pathway includes dual suction ports carried on the nozzle assembly in fluid communication with the nozzle cavity, a splitter carried on the canister assembly, dual suction hoses in fluid communication between the dual suction ports and the splitter, a removable bag mount carried on the canister assembly and a feed conduit on the canister assembly which provides fluid communication between the splitter and the removable bag mount.

Abstract: An upright vacuum cleaner includes a nozzle assembly, a canister assembly pivotally mounted to said nozzle assembly, a suction fan and drive motor and a biaser. The biaser has a first end that engages the nozzle assembly and a second end that engages the canister assembly. The biaser provides a positive downforce urging the forward end of the nozzle assembly toward the surface being cleaned.

Abstract: An electric vacuum cleaner according to the present invention includes a cleaner main body 16, and a suction unit 24 which is rotatably disposed at the bottom of the cleaner main body 16 and includes a suction port 23 and a rotary brush 25. The cleaner main body 16 includes a dust collecting chamber 19, and a fan chamber 18 equipped with an electric fan 17 disposed at the bottom thereof. A handle 21 having a grip portion 20 and a control circuit board 22 are installed above the dust collecting chamber 19. Components such as the handle 21 and the electric fan 17 are installed at the rear of the cleaner main body 16. With this configuration, the vacuum cleaner is prevented from falling down when it is set upright. Further, the safety in use of the vacuum cleaner will be improved. Also, the user is able to easily use the vacuum cleaner. Furthermore, it is possible to finish assembling the component parts only at the rear of the vacuum cleaner.

Abstract: An upright vacuum cleaner (A) includes an upright housing section (B) and a nozzle section (C). A cyclonic airflow dirt and dust separating chamber (54) is defined in said upright housing section. A suction source (E) pulls air and entrained dirt, dust, and other contaminants through a main suction opening (26) formed in the underside (24) of the nozzle and into the cyclonic airflow chamber (54). The cyclonic airflow chamber causes the suction airstream to travel in a cyclonic path such that the entrained contaminants are separated therefrom and deposited into a dirt container (52) that defines the chamber (54). A main filter element (K) filters residual contaminants from the suction airstream between the chamber and the suction source. The main filter element is preferably made from high-density polyethylene porous filter media.

Abstract: In the invention, a brush body 30 that is rotated and driven by a motor 32 is disposed in a suction unit 2, and dust is sucked from the suction unit 2 by a blower 4, while exhaust of the blower 4 is sent to the suction unit 2 side through an exhaust passage 27. While the exhaust of the blower 4 is blown to the motor 32 exhaust is blown to the floor for lifting the dust from the floor to enhance the dust collection efficiency, and moreover, if the output of the motor 32 for driving the brush 30 is increased, temperature rise of the motor 32 can be suppressed, and thus durability may be enhanced.

Abstract: A vacuum cleaner having an improved structural handle/support assembly for supporting a vacuum cleaner module. The handle/support assembly has a primary support member, a secondary support member and a snap-in handle section. The primary and secondary support member cooperate to form an integrated support structure that reduces torquing of the vacuum cleaner module relative to the handle/support assembly during use. Further, the primary and secondary support members define an aperture to accommodate rearwardly extending vacuum hose. The handle section includes an open base portion that includes one or more slots therein. A handle mounting portion of the primary support member having one or more integral tabs formed therein is telescopically received within the base portion of the handle section. The one or more slots in the handle section receive the one or more tabs of the handle mounting portion in snap-fit engagement.

Abstract: An upright vacuum cleaner has a cleaning head for cleaning a surface and an upper body portion mounted on the cleaning head. The upper portion comprises a longitudinally extending axis, at least one cyclone having an air entry port and a motor positioned above the at least one cyclone and in air flow communication with the at least one cyclone.

Abstract: An upright-type vacuum cleaner includes a cleaner body having a dust collecting chamber and a motor driving chamber, a suction brush, and a cyclone dust collecting device removably mounted on the dust collecting chamber. The cyclone dust collecting device includes a cover, first and second cyclone bodies for centrifuging and collecting contaminants entrained in the air, a lower door, and an outlet pipe. The second cyclone body includes a grill having a plurality of perforations formed therein to filter out small particle contaminants. The lower door is removably mounted on a lower end of the first cyclone body, and the outlet pipe discharges the clean air. The cyclone dust collecting device prevents a backflow of contaminants, thereby, collecting contaminants are more effectively.

Abstract: A stick-type vacuum cleaner capable of performing a cleaning process by using an auxiliary tool without having to separate a brush assembly from a suction pipe, including: a body having main and auxiliary suction channels; a dust collecting cup having main and auxiliary suction ports which are communicated with the main and auxiliary suction channels, respectively; a flexible hose arranged to be communicated with the auxiliary suction channel, the flexible hose whose outlet portion is attached to the auxiliary tool; means for selectively blocking the main suction channel; means for selectively blocking a suctioning of air through the auxiliary suction channel; and a motor-fan system for generating an air flow, which moves through the main suction channel and the auxiliary suction channel, and then into the dust collecting cup.

Abstract: A vacuum cleaner includes a first housing defining a cyclonic airflow chamber and a second housing defining a main suction opening that is in communication with an inlet of the cyclonic chamber. A suction source has a suction airstream inlet in communication with an outlet of the cyclonic chamber, and establishes a suction airstream that enters said main suction opening, passes through said cyclonic chamber, and passes to an outlet of said suction source. A substantial portion of particulates entrained in the suction airstream are separated therefrom when said suction airstream moves in a cyclonic fashion through the cyclonic chamber.

Abstract: Disclosed is a unique and novel air filtrating, self-propelled upright vacuum cleaner. The filtration system utilizes a HEPA-rated air filter as a final filtering element. The disclosed vacuum cleaner contains numerous other features including a self-propelled drive mechanism.

Abstract: A bag housing assembly for a vacuum cleaner includes a rear bag housing which forms a bag cavity and a bag door which releasably attaches to the rear bag housing for enclosing the bag cavity. One of the rear bag housing and bag door is formed of a semi-rigid flexible fabric material which is permeable to air and which is sufficiently rigid to retain a molded shape. The flexible fabric material is attached to a rigid frame member which allows the bag door to releasably attach to the rear bag housing.

Abstract: An apparatus and method for transporting a flow of air and particulates through a vacuum cleaner. In one embodiment, the apparatus includes an intake body having an intake opening configured to receive the flow of air into particulates. An airflow propulsion device is coupled to the intake opening to draw the flow through the intake opening and through a flow passage having an approximately constant flow area. The flow continues through one or more conduits from the propulsion device to a filter element housed in a filter housing where the particulates are separated from the flow of air.

Abstract: An electric vacuum cleaner has a main body 1 incorporating an electric blower 2, a nozzle unit 6 having a nozzle, and a first and a second connection pipe 7 and 8 fitted between the main body 1 and the nozzle unit 6 so as to serve as part of the passage for a dust suction air flow generated by driving the electric blower 2. The first and second connection pipes 7 and 8 are rotatable, and support the main body 1 in a standing position.

Abstract: An electric vacuum cleaner according to the present invention includes a cleaner main body 16, and a suction unit 24 which is rotatably disposed at the bottom of the cleaner main body 16 and includes a suction port 23 and a rotary brush 25. The cleaner main body 16 includes a dust collecting chamber 19, and a fan chamber 18 equipped with an electric fan 17 disposed at the bottom thereof. A handle 21 having a grip portion 20 and a control circuit board 22 are installed above the dust collecting chamber 19. Components such as the handle 21 and the electric fan 17 are installed at the rear of the cleaner main body 16. With this configuration, the vacuum cleaner is prevented from falling down when it is set upright. Further, the safety in use of the vacuum cleaner will be improved. Also, the user is able to easily use the vacuum cleaner. Furthermore, it is possible to finish assembling the component parts only at the rear of the vacuum cleaner.

Abstract: An upright vacuum cleaner includes an upright housing section and a nozzle section. A cyclonic airflow dirt and dust separating chamber is defined in said upright housing section. A suction source pulls air and entrained dirt, dust, and other contaminants through a main suction opening formed in the underside of the nozzle and into the cyclonic airflow chamber. The cyclonic airflow chamber causes the suction airstream to travel in a cyclonic path such that the entrained contaminants are separated therefrom and deposited into a dirt container that defines the chamber. A main filter element filters residual contaminants from the suction airstream between the chamber and the suction source. The main filter element is preferably made from high-density polyethylene porous filter media.

Abstract: An upright vacuum cleaner includes an upright housing section and a nozzle section. A cyclonic airflow dirt and dust separating chamber is defined in said upright housing section. A suction source pulls air and entrained dirt, dust, and other contaminants through a main suction opening formed in the underside of the nozzle and into the cyclonic airflow chamber. The cyclonic airflow chamber causes the suction airstream to travel in a cyclonic path such that the entrained contaminants are separated therefrom and deposited into a dirt container that defines the chamber. A main filter element filters residual contaminants from the suction airstream between the chamber and the suction source. The main filter element is preferably made from high-density polyethylene porous filter media.

Abstract: An air exhaust structure of an upright-type vacuum cleaner includes a duct vertically formed in a side of a cleaner body, communicating with a motor driving chamber, a supporting member protruded from an inner wall of the duct to a predetermined height, a filter supported by the supporting member and received in the duct, and a grill hinged to the cleaner body for opening and closing an air discharge opening of the duct. The air exhaust structure of the upright-type vacuum cleaner enables simple fabrication and reduced number of parts and fabrication cost.

Abstract: A hose and tool caddy removably mounts to an upright vacuum cleaner. The hose and tool caddy stores the vacuum cleaner hose and accessory tools, such as a dusting brush, furniture nozzle, extension wand and crevice tool, which are used for above-the-floor cleaning. When the upright vacuum cleaner is being used for floor care, the hose and tool caddy may be removed from the upright vacuum cleaner and hung-up. The hose and tool caddy includes a base and a guide member. The base is formed with a looped channel for receiving the hose, a pair of resilient C-clamps for supporting the dusting brush and furniture nozzle and a vertically extending channel for receiving the extension wand with the crevice tool stored therein. The upright vacuum cleaner includes a track member for slidably receiving the guide member when the hose and tool caddy is being mounted to the upright vacuum cleaner.

Abstract: A particle separation member is provided for use with a cyclone separator. The particle separation member divides the separator into a cyclone chamber and a particle receiving chamber. The cyclone chamber and the particle receiving chamber communicate via a plurality of apertures in the particle separation member. The separation member comprises two cooperating members movable between an open position and a closed position to provide access to the particle receiving chamber to empty the collected contents therefrom.

Abstract: An apparatus and method for transporting a flow of air and particulates through a vacuum cleaner. The apparatus can include an airflow propulsion device that draws the flow through an intake aperture and propels the flow through two upwardly-extending conduits toward a filter element housed in a filter housing. The conduits can have generally smooth internal walls and a combined flow area less than the flow area of the intake aperture to accelerate the flow upwardly toward the filter element.

Abstract: A particle separation member is provided for use with a cyclone separator. The particle separation member divides the separator into a cyclone chamber and a particle receiving chamber. The cyclone chamber and the particle receiving chamber communicate via a plurality of apertures in the particle separation member. The apertures have baffle members for reducing the flow of fluid in the particle receiving chamber.

Abstract: An upright vacuum cleaner has a vacuum cleaner head for cleaning a floor having a forward portion and two spaced apart rear portions extending rearwardly from the forward portion, the spaced apart rear portions defining an open space there between, and a longitudinally extending upper body portion having a longitudinal axis, the upper body portion being pivotally mounted on the vacuum cleaner head and moveable between a raised position and a lowered position in which the longitudinal axis is generally parallel to the floor, a portion of the upper body portion being received in the open space between the rear portions when in the lowered storage position.

Abstract: A vacuum cleaner is provided including a nozzle assembly, an agitator brush mounted for relative rotation on the nozzle assembly, a motor and fan assembly carried on the vacuum cleaner and a handle and canister assembly pivotally mounted to the nozzle assembly. The handle and canister assembly includes a cavity for holding a dust bag, a removable access door for accessing the cavity and a retention flap across the corner of the access opening for engaging and retaining the dust bag fully in the cavity when the access door is installed following dust bag replacement. Preferably, one retention flap is provided at each corner of the access opening.

Abstract: An apparatus and method for transporting a flow of air and particulates through a vacuum cleaner. In one embodiment, the apparatus includes an intake body having an intake opening configured to receive the flow of air into particulates. An airflow propulsion device is coupled to the intake opening to draw the flow through the intake opening and through a flow passage having an approximately constant flow area. The flow continues through one or more conduits from the propulsion device to a filter element housed in a filter housing where the particulates are separated from the flow of air.

Abstract: This invention relates to a method and equipment whereby a pig (11) launched into a gas injection line (5) can be inserted into a hydrocarbon flow line (2) in a position close to the subsea wellhead or manifold (1) without interrupting the flow of hydrocarbons and with minimum interference to the process of gas injection.

Abstract: A self-propelled vacuum cleaner is provided having an upper handle portion and a carriage pivotally mounted to a lower end of the handle portion for pivotal motion relative the handle portion about a horizontally extending carriage axis. A transmission drivingly connected to at least one drive wheel mounted on the carriage, whereby the at least one drive wheel propels the vacuum cleaner over a floor surface. A nozzle body pivotally mounted to the carriage for pivotal motion relative the carriage about a generally horizontally extending nozzle axis, the nozzle body having a downward facing suction opening. The nozzle axis being generally horizontally offset from the carriage axis.

Abstract: A floor cleaner comprising a base and a filter bag housing, the filter bag housing having a bag cavity which has an undulated inner wall for receiving a filter bag, the undulated wall having a plurality of elongated protrusions and adjacent intermediate elongated air flow recesses. A smooth outer wall is spaced from the inner wall.

Abstract: A motor assembly for use in a vacuum cleaner utilizes a clam-shell type housing having a plurality of shell components that cooperate with each other to define a fan cavity and a motor cavity adjacent to the fan cavity. The housing has a fan cavity inlet and a fan cavity outlet. A field is received in the motor cavity. An armature assembly includes an armature shaft extending through the field and extending into the fan cavity. A pair of brushes are mounted to the housing in the motor cavity, and contact a commutator. A fan blade is disposed in the fan cavity and secured to the armature shaft for rotation together therewith. The fan blade rotates with the armature shaft during motor operation to cause airflow from the fan cavity inlet to the fan cavity outlet.

Abstract: An upright vacuum cleaner includes a suction apparatus and a body pivotably mounted to the suction apparatus. The suction apparatus includes a suction opening and a rotatably driven dust agitator. The body includes a suction motor, support wheels, and a manually grippable handle. The body is swingable downwardly relative to the suction apparatus from an upright position to a normal use position, whereupon the height of a gap between the suction opening and a floor surface is minimized to promote effective cleaning. If the body is swung further downwardly past the normal use position, the height of the gap is prevented from changing, so the effective cleaning is maintained.

Abstract: An upright steerable vacuum cleaner comprised of a handle, body, nozzle base and air duct therein further having a swivel joint at the junction of the nozzle base and body. The swivel joint or steering mechanism comprises a trunnion pivotably connected to the main air duct of the vacuum. The pivotable connection causes the nozzle base of the vacuum to turn right with a clockwise twist of the vacuum handle and turn left with a counter-clockwise twist of the vacuum handle. A locking mechanism is provided for preventing rotation of the trunnion with respect to the air duct.

Abstract: A vacuum cleaner comprises a floor nozzle housing an agitator for stirring dust, a handle sector containing a dust bag and a fan motor for sucking dust, and a power transmission device for transmitting the driving force of the fan motor to the agitator. The handle sector is tiltably attached to the floor nozzle at a rear section. The power transmission device comprises a driving pulley fixed to the agitator, an idling pulley attached adjacent to the driving pulley and rotating free from the agitator, and a belt provided between the fan motor and one of the driving pulley and the idling pulley. A switching lever is provided for switching the position of the belt to the driving pulley or to the idling pulley, which motion is coupled with the tilting motion of the handle sector. The driving force of the fan motor is conveyed to the agitator in accordance with the tilting motion of the handle sector.

Abstract: A vacuum cleaner is provided including a nozzle assembly and a handle pivotally connected to the nozzle assembly. The handle includes a cavity for holding a fan and motor assembly and a dust bag. A main door on the handle is operable to gain access to the dust bag in the cavity. A final filtration compartment is carried on the main door. The final filtration compartment includes a separate access door that is received in the front face of the main door and fits flush therewith.

Abstract: For use with vacuum cleaner bags of the type having a substantially rigid collar surrounding the bag opening, and with vacuum cleaners of the type having a dirty air outlet nozzle, a vacuum bag docking assembly is shown and described. The assembly incorporates an anchor member having a central opening for closely receiving the dirty air outlet nozzle. The assembly also incorporates a mounting member which engages the collar on the vacuum bag to secure the bag to the bag mounting member. The bag mounting member is pivotally connected to the anchor member, and moves between a loading position in which the bag can be inserted or removed from the mounting member, and a working position in which the bag opening engages the dirty air outlet nozzle.

Abstract: An upright vacuum cleaner is provided which has a handle pivotally mounted to a foot. The foot has a releasable mechanism pivotally mounted thereto. The releasable mechanism and the handle are provided with abutting protrusions and recesses which can abut one another to retain the handle in an upright storage position, in an angularly disposed position for normal use and a generally horizontal position. The releasable mechanism preferably comprises a foot pedal which has an integral arm spring extending angularly therefrom and biased against the foot so that the protrusion and/or recess on the foot pedal is urged within a corresponding recess and/or protrusion on the handle.

Abstract: A vacuum cleaner comprises a housing, a motor mounted in the housing, and a switch coupled the motor for actuating the motor to an operative and an inoperative condition. The switch includes an actuator button for moving the switch between an opened and a closed position. A foot pedal is pivotally mounted to the housing and has a bottom surface in an abutting relationship with respect to the actuator button. The foot pedal can include an axle having a pair of flat surfaces which pivotally mount to a slotted circular retainer in the housing. The bottom surface of the foot pedal can include a depending flange which is in abutting relationship with the actuator button. Further, a spring can be disposed between the bottom surface of the foot pedal and the housing to bias the foot pedal away from the switch wherein the spring at least partially surrounds a portion of the foot pedal and at least partially surrounds the actuator button.

Abstract: A dirt conveying duct arrangement is formed between a nozzle and motor-fan of a vacuum cleaner and includes front and rear duct sections. The front duct section is open at the bottom thereof and covered by a removable bottom plate. The rear duct section is open at the top thereof and is covered by a removable top duct cover. The two-section dirt conveying duct arrangement allows clogs to be removed along the entire length thereof. The corner formed between the rear duct section and the motor-fan inlet may be molded with a radius to improve airflow into the motor-fan and limit losses in suction pressure.

Abstract: A pipeline processing assembly for a pipeline adapted to convey a fluid from an upstream end of the pipeline to a downstream end of the pipeline. The assembly includes a pipeline pig for removing earthen matter and other debris from inside the pipeline. The pig is inserted into the pipeline at the upstream end, and has a dimension substantially equal to an inside diameter of the pipeline to form a seal between the pig and the pipeline. A vacuum source communicates with the pipeline downstream of the pig, and generates a reduced air pressure sufficient for moving the pig downstream through the pipeline. The pig gathers and moves the earthen matter and debris downstream through the pipeline and outwardly through an exit opening formed at the downstream end.

Abstract: The vacuum cleaner has a hollow first fixing member formed together with a body, and a second fixing member assembled with the first fixing member. The first and the second fixing members are formed with a first and a second ribs respectively. The first and the second ribs form a circular-shaped supporting rib part when the first and the second fixing members are assembled with each other. A rotational shaft of a wheel is inserted into the supporting rib part to be assembled therewith. Thus a port for fixing the wheel need not be formed on the body, and the air drawn into the body is not discharged through such a port. Further, since the rotational shaft does not protrude into the body, it is easier to install components in the body and to disassemble the wheel from the body.

Abstract: An upright vacuum cleaner having a suction inlet body for cleaning a floor with rotation of the agitator including the brush assembled by the rubber belt at a motor shaft, a main body rotatively installed with a filter for collecting dust and the like sucked through the suction inlet body by the suction force of the driving means, a handle member disposed at an upper portion of the main body for pushing and dragging around, and a suction hose installed at the main body for sucking dust with suction force of the driving means to be utilized by being inserted into the suction inlet body and to be stored by placing on the handle member, wherein the mobile means comprises: a rotating shaft supported at an inner hole of a body composing of the main body being assembled in mobility and being protruded out of the outer hole with serration formed at both ends thereof; and a pair of rear wheels in a predetermined shape inserted along with the serration of the rotating shaft and inserted though the outer hole of the bo

Abstract: A hard bag cleaner is provided where cleaner air is exhausted through a lower positioned motor-fan system disposed in the hard bag portion of its cleaner. Air then moves upwardly along the side of the hard bag portion of the cleaner to be exhausted horizontally outwardly therefrom. A series of vertically extending guiding vents formed by vertically extending louvers baffle exhaust air flow and also serve as an inner support for a filter mounted outwardly against these louvers.

Abstract: A cleaning system which includes a piping system connected between two opposite ends of the cooling loop of an air conditioning system and two opposite ends of a cooling medium reclaiming machine, a first storage tank and a second storage tank respectively connected between the two opposite ends of the cooling loop of the air conditioning system and the piping system, and a plurality of valves provided at the piping system for controlling the flowing direction of a cooling medium between the cooling loop of the air conditioning and the cooling medium reclaiming machine, and a hard grained material carried with the cooling medium through the cooling loop of the air conditioning system between the storage tanks to rub dirty deposit away from the inside wall of the cooling loop of the air conditioning system.

Abstract: Periodic self-cleaning apparatus of use in combination with a process tube which receives a process fluid therethrough such as a tubular reactor to form a looped system having a launching and receiving chamber for a cleaning device or pig which is propelled periodically through the tube by the motive force of the fluid to clean the tube without disrupting the continuous unidirectional flow of the fluid. The pig need not be spherical and extraneous fluid pumps are not needed.

Abstract: A product recovery system for recovering product from a pipeline having a supply end and a destination end and having a path of primary product flow from the supply end to the destination end. The product recovery system includes a pig launching station connected to and in communication with one end of the pipeline. The pig launching station has a pig parking chamber which holds a pig outside the primary product flow. The product recovery system has a pig catching station connected to and in communication with the destination end of the pipeline. The pig catching station includes a clean-in-place chamber for housing a pipeline pig while the pig is cleaned without removing the pig from the product recovery system. A valve may be used to push the pig out of the clean-in-place chamber so it may be returned up the pipeline.