Interdependent Or Interoperated Gas Flow Cutoff Or Apparatus Shutdown And Media Cleaning Patents (Class 55/288)
  • Patent number: 11363927
    Abstract: A vacuum cleaner including a housing, a suction inlet, a suction source, a collector and a filtering unit. The housing includes a suction airflow through the housing. The suction source draws the suction airflow through the suction inlet. The collector receives debris separated from the suction airflow and is disposed between the suction inlet and the suction source. The filtering unit includes a filter, a retractable member, and a biasing member, where the retractable member is operable in directions towards and away from the filter for supplying momentary impact to the filter for providing agitations to rid the filter from debris. The biasing member urges the retractable member towards the filter.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: June 21, 2022
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Jonathan M. Mantes, Fraizier Reiland, Anthony R. Sleck
  • Patent number: 10130910
    Abstract: A compressed air drying device includes a support base including an inlet of compressed air from a compressor, an outlet of the compressed air, and a discharge port of oil and water. The discharge port includes a drain valve device and a drying container. The container is filled with desiccant and is installed in the support base. In a loading operation, the compressed air drying device causes the desiccant to dry the compressed air introduced through the inlet and discharges the dried compressed air through the outlet. In an unloading operation, the compressed air drying device causes the compressed air to pass through the container to discharge oil and water from the discharge port. A glass fiber filter is provided at one or more of a position upstream of the desiccant and a position downstream of the desiccant in a flow of the compressed air during the loading operation.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: November 20, 2018
    Assignee: NABTESCO AUTOMOTIVE CORPORATION
    Inventors: Nobushige Matsuie, Ichiro Minato, Tomoya Nishihara, Yusuke Ota
  • Patent number: 9713785
    Abstract: An air filtration system with vertical construction includes a suction intake for taking in contaminated air and vertical channel. Contaminated air is taken in and conveyed downward through the vertical channel which includes a lateral opening, through which the air flow is deflected toward and conveyed through a material pre-separator. A process chamber having at least one filter element is provided downstream of the material pre-separator. A fan is provided downstream of the process chamber. The material pre-separator has an intake side and an outlet side for a particle-contaminated air flow and consists of several strip-shaped separating elements that are arranged vertically on top of one another. The separating elements are initially arranged from the top toward the bottom with an increasing positive angle relative to the vertical line and at least one lower separating element has a negative angle relative to the vertical line.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: July 25, 2017
    Assignee: ESTA Apparatebau GmbH & Co. KG
    Inventors: Michael Novosel, Bernhard Frank
  • Patent number: 9289710
    Abstract: A filter element has a filter bellows and at least one support element arranged on the filter bellows that supports the filter element relative to a filter housing in which the filter element is to be arranged. The at least one support element is arranged on at least one edge of the filter bellows and projects outwardly past the filter bellows. The at least one support element is detachably or non-detachably attached on the filter bellows directly or indirectly. The at least one support element is preferably arranged on a corner of the filter bellows and projects past all sides of the filter bellows adjoining the corner. An air filter with a filter housing is furnished with the filter element.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: March 22, 2016
    Assignee: MANN+HUMMEL GMBH
    Inventors: Robert Hasenfratz, Fabian Wagner, André Roesgen, Christian Thalmann, Frank Pflueger, Werner Blossey, Pascal Neef, Mario Rieger, Nadine Sorger, Andreas Weber
  • Publication number: 20140338293
    Abstract: A duplex fluid filter assembly allows extended life between filter replacements, by automatically back-flushing one filter unit with clean fluid from another filter unit of the duplex assembly.
    Type: Application
    Filed: June 14, 2013
    Publication date: November 20, 2014
    Inventors: Jon Williams, Michael Long
  • Patent number: 8876928
    Abstract: A powder processing system having a processing vessel into which powder is pneumatically supplied and an exhaust plenum that communicates with the processing vessel through an exhaust port. A filter is located at the exhaust port for filtering air borne powder from the air flow exiting the processing vessel, and a reverse pulse air filtering device is provided for selectively removing accumulated powder from the filter. The cleaning device includes a nozzle having a first portion within the air plenum and a second portion within the air filter, and a plunger is mounted on the first filter portion for movement to an exhaust port closing position as an incident to the direction of pressurized air through the first portion of the nozzle for enabling pressurized air from the second portion of the nozzle to thereupon be directed through the filter without hindrance of air exiting the processing vessel.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: November 4, 2014
    Assignee: Spraying Systems Co.
    Inventor: Joseph P. Szczap
  • Patent number: 8424154
    Abstract: A vacuum cleaner having a housing with a dust container having an inlet for dust laden air, a filter unit comprising a flexible filter body, a motor fan unit for generating a flow of air through the inlet and through the filter unit, and a dust removing means configured to agitate the flexible filter body in response to a force applied to the dust removing means.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: April 23, 2013
    Assignee: AB Electrolux
    Inventors: Jonas Beskow, Håkan Miefalk
  • Patent number: 8142554
    Abstract: The invention relates to a method for cleaning filters of a vacuum cleaner having a dirt collecting container, which has a suction inlet and is in flow connection with at least one suction unit via at least one filter and at least one suction extraction line, and at least one external air inlet which opens into the suction extraction line downstream of the filter and can be closed by means of a closing valve. The closing valve has a movable valve body acted upon by a closing spring with a closing force and, in the closed position, additionally by a magnetic holder with a magnetic holding force. In order to clean the filter, at least one closing valve is opened and the side of the filter oriented away from the dirt collecting container is impinged upon by external air. A vacuum cleaner for carrying out the method is also provided.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: March 27, 2012
    Assignee: Alfred Kaercher GmbH & Co. KG
    Inventors: Daniel Eckstein, Thorsten Langen
  • Patent number: 7976614
    Abstract: The invention relates to a method for cleaning the filters of a vacuum cleaner. A dirt collecting container of the vacuum cleaner has a suction inlet and is in flow connection with at least one suction unit via at least one filter and at least one suction extraction line. At least one external air inlet is provided which opens into the suction extraction line downstream of the filter and can be closed by a closing valve. The closing valve has a movable valve body which is acted upon by a closing spring with a closing force. In order to clean the filter, the closing valve is opened and the side of the filter that is oriented away from the dirt collecting container is impinged upon by external air. The valve body is acted upon, irrespective of its position, by the closing force of the closing spring and, in a position at a distance from the valve seat, additionally acted upon by a repulsion force of a resilient stop element.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: July 12, 2011
    Assignee: Alfred Kaercher GmbH & Co. KG
    Inventors: Daniel Eckstein, Thorsten Langen
  • Patent number: 7951214
    Abstract: This invention relates to a vacuum cleaner comprising a body with a vacuum source. The vacuum cleaner is provided with at least two filter chambers, a first filter chamber for a first filter means in a surface cleaning mode and a second chamber for the same or a second filter means in a filter cleaning mode.
    Type: Grant
    Filed: November 26, 2004
    Date of Patent: May 31, 2011
    Assignee: AB Electrolux
    Inventors: Linda Menrik, Anna-Karin Gray, Finn Lofnes, Håkan Miefalk, Mattias Jansson, Anna-Karin Trydegård, Mathias Belin, Henrik Holm, Lars Mennborg
  • Patent number: 7914603
    Abstract: A particle trap for a remote plasma source includes a body structure having an inlet for coupling to a chamber of a remote plasma source and an outlet for coupling to a process chamber inlet. The particle trap for a remote plasma source also includes a gas channel formed in the body structure and in fluid communication with the body structure inlet and the body structure outlet. The gas channel can define a path through the body structure that causes particles in a gas passing from a first portion of the channel to strike a wall that defines a second portion of the gas channel at an angle relative to a surface of the wall. A coolant member can be in thermal communication with the gas channel.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: March 29, 2011
    Assignee: MKS Instruments, Inc.
    Inventors: Ali Shajii, Xing Chen, Andrew Cowe, David Burtner, William Robert Entley, ShouQian Shao
  • Patent number: 7896959
    Abstract: A filtration apparatus for use in a system containing a gas or liquid to be decontaminated. The apparatus has at least one housing for a filter that removes contaminants from a gas or liquid which include biologics and chemicals. The housing contains an inlet portion and an outlet portion in association with valves for closing or regulating the flow of gas or liquid to be decontaminated by the filter. A differential pressure gauge is optionally provided to monitor the pressure in the housing and to indicate when the filter should be replaced. One or more housings can be used for the apparatus. The apparatus is useful for securing water systems, gas delivery systems, and vacuum systems.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: March 1, 2011
    Inventor: Robert W. Schopf, Jr.
  • Patent number: 7892320
    Abstract: Disclosed herein are an automatically replaceable apparatus for collecting byproducts in semiconductor producing equipment and a control method thereof. The apparatus includes several trap units mounted to a vertical shaft at regular angular intervals and rotating in response to a driving direction of a servo motor. Upper and lower plates support the vertical shaft, and connect byproduct inlet and outlet ports, cleaning-water supply and discharge ports, and dry-gas supply and exhaust ports to the respective trap units. Trap and plate coupling means are extended at normal times to air-tightly seal gaps between the upper and lower plates and the trap units, and contracted when the trap units are rotated in a predetermined direction for the replacement. The servo motor is mounted to a lower surface of the lower plate and rotates the trap units within a predetermined angular range. A control unit controls the operation of the components.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: February 22, 2011
    Assignee: Milaebo Co., Ltd.
    Inventors: Che-Hoo Cho, Seung-Il Lee, Young-Jun Yun
  • Patent number: 7780752
    Abstract: A cyclone dust-separating apparatus of a vacuum cleaner is disclosed. The cyclone dust-separating apparatus includes a cyclone unit having a cyclone chamber to whirl first air drawn in from the outside thus to separate dust or dirt therefrom, a filter unit disposed in a filtering chamber located in a downstream of the cyclone unit and having a filter to filter dust or dirt from the first air, a cleaning unit to brush away the dust or dirt accumulated in the filter by using second air drawn in from the outside, and a dust collecting unit to collect and store the dust or dirt separated from the first air by the cyclone chamber and the dust or dirt brushed away from the filter by the cleaning unit.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: August 24, 2010
    Assignee: Samsung Gwangju Electronics co., Ltd
    Inventors: Seung-Yong Cha, Jang-Keun Oh
  • Patent number: 7611553
    Abstract: There are provided a dust collector for cleaning dirt, dust, etc. adhering to a filter in association with the operation for opening and closing a cap of the dust collector, and a vacuum cleaner provided with the dust collector. The dust collector 30 has a dust collection vessel having a cap 33c and a case 33d, a filter 34a for filtrating sucked dirt, dust, etc., and a ring 71 provided with a brush 70 for cleaning dirt, dust, etc. adhered to the filter 34a. The cap 33c is provided with support pins 73 that slide in association with the operation for opening the cap 33c, and the support pin 73 and the ring 71 are connected to each other. The ring 71 moves in association with the operation for opening the cap 33c, by which the filter 34a is cleaned.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: November 3, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Shigenori Hato
  • Publication number: 20090000479
    Abstract: A conduit may be used to deliver a pressurized fluid to a cell of a diesel particulate filter to clean the cell. The pressurized fluid may remove particulate matter from the cell. The conduit may be moved within the cell to dislodge particulate matter within the cell. The conduit may be manually or automatically inserted into the cell.
    Type: Application
    Filed: June 9, 2008
    Publication date: January 1, 2009
    Applicant: CLEAIRE ADVANCED EMISSION CONTROLS, LLC
    Inventors: Michael Streichsbier, Juston Smithers, Bradley L. Edgar
  • Patent number: 7468082
    Abstract: A self cleaning gas filtration system for filtering contaminants from a flow of gas. A filter element is disposed within a housing and configured to receive a first flow of gas from an inlet in the housing. A pressurized gas source is fluidly coupled to at least one tube having a plurality of perforations. The perforations are configured to backflush the filter with a second flow of gas from the gas source. An outlet is configured to receive at least a portion of the second flow of gas.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: December 23, 2008
    Inventor: Robert R. Gordon
  • Publication number: 20080256915
    Abstract: A self-cleaning blow-off for a rotary air screen, includes a blow-off channel including an inlet disposed for receiving a flow of air from a pressurized air source, and a movable blow-off channel section configured and supported to be movable between an operational position disposed adjacent to a portion of the air screen for directing the flow of air for blowing debris and dirt from the screen, and a cleaning position disposed away from the screen such that accumulated debris and dirt in the blow-off section will be released. And, an actuator is connected to and controllably operable for moving the movable blow-off section between the operating position and the cleaning position. The actuator can be controlled to move the movable blow-off section to the cleaning position periodically, as desired, or responsive to an input.
    Type: Application
    Filed: April 17, 2008
    Publication date: October 23, 2008
    Inventor: David S. D'hondt
  • Publication number: 20080229926
    Abstract: In order to provide a device for separating wet paint overspray from an exhaust air flow containing overspray particles, wherein the overspray particles pass into the exhaust air flow in an application region of a painting assembly and wherein the device comprises at least one separation device for separating the overspray from at least a part of the exhaust air flow, in which clogging of the separation device with wet paint overspray is substantially prevented during a cleaning operation and/or ingress of precoat material into the application region from the region of the separation device is substantially prevented during a precoating operation, it is proposed that the device comprises at least one closing device, by means of which the flow path of the exhaust air flow from the application region to the separation device can be intermittently closed off at least partially, and at least one precoat feeding means, which discharges a precoat material into the exhaust air flow downstream of the closing device.
    Type: Application
    Filed: April 4, 2008
    Publication date: September 25, 2008
    Applicant: Durr Systems GmbH
    Inventors: Dietmar WIELAND, Jens HOLZHEIMER
  • Patent number: 7410521
    Abstract: A system for removing matter from a filtering device includes a flow receiving device having a plurality of blocking portions. Each of the plurality of blocking portions is configured to substantially block a flow directed by a corresponding at least one of a plurality of filter passages of the filtering device. The system further includes a positioning assembly configured to assist in positioning the flow receiving device within the filtering device and relative to a filter media of the filtering device.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: August 12, 2008
    Assignee: Caterpillar Inc.
    Inventors: Cheryl L. Sellers, Orlando Sellers, II
  • Patent number: 7208024
    Abstract: The present invention is a floor care appliance having a filter member that has one portion being cleaned at all times. The filter is utilized for separating fine particles from a dirt laden airstream that has been previously cleaned of larger particles. The hollow interior of the filter is divided radially into equally sized elongated portions. The filter is rotated so that one elongated portion of the filter is rotated past a port located at one end of the filter which introduces reverse airflow through the filter to clean the surface of the filter. The entire filter is cleaned with each complete revolution of the filter.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: April 24, 2007
    Assignee: The Hoover Company
    Inventor: Vincent L. Weber
  • Patent number: 7147683
    Abstract: A valve and trigger cyclically connect a vacuum and a blower to a filter. The valve box has three openings, the first connectable to the vacuum, the second connectable to the blower and the third connectable to the filter. A gate inside the box, biased by the blower and the vacuum toward closing the first opening, is held against the bias by a trigger outside the box to close the second opening. The external trigger intervally operates to release the interior gate to close the first opening and open the second opening. The blower operates only if the trigger is operating. The gate is released once for approximately 1/12 of a cycle interval during each trigger operating interval. A plurality of valves can be combined in a system with one trigger for cyclically sequentially connecting a plurality of filters to the vacuum and the blower.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: December 12, 2006
    Assignee: Christy, Inc.
    Inventor: Clinton J. McCutchen
  • Patent number: 6830599
    Abstract: A valve and trigger cyclically connect a vacuum and a blower to a filter. The valve box has three openings, the first connectable to the vacuum, the second connectable to the blower and the third connectable to the filter. A gate inside the box, biased by the blower and the vacuum toward closing the first opening, is held against the bias by a trigger outside the box to close the second opening. The external trigger intervally operates to release the interior gate to close the first opening and open the second opening. The blower operates only if the trigger is operating. The gate is released once for approximately {fraction (1/12)} of a cycle interval during each trigger operating interval. A plurality of valves can be combined in a system with one trigger for cyclically sequentially connecting a plurality of filters to the vacuum and the blower.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: December 14, 2004
    Assignee: Christy, Inc.
    Inventor: Clinton J. McCutchen
  • Patent number: 6572682
    Abstract: A Diesel particulate filter cartridge system for filtering particulate matter and nitrogen oxide from a flow of air containing particular matter includes a filter support plate with a plurality of cylindrical electrically regenerable filter media members connected thereto. A NOx trap is also provided that is either incorporated directly into the filter media members or provided as a separate structure in close proximity to the filter media members. A valve assembly includes a number of independently actuatable damper valves that correspond to a number of through holes in the filter support plate. When actuated, the damper valves limiting flow of air through a corresponding through hole and filter media member connected thereto. An outer housing is disposed about the valve assembly and filter media members to contain them in a compact package. A programmable computer control module shuts off the flow of air through a filter media member and selectively electrically regenerates it.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: June 3, 2003
    Assignee: Rypos, Inc.
    Inventors: Klaus J. Peter, Osama M. Ibrahim
  • Patent number: 6120583
    Abstract: An exhaust gas purifier, having three or more filter units parallel, wherein if at least one filter unit fails during its generation, it is compensated by the cyclic operation of the maining filter units so that the total function of the exhaust gas purifier is practically maintained. Electric heaters 14 are provided for regenerating individual filter units 3, and valves 4 are placed either at the entrances or at the exits of the units 3. While filter units 3 with opened valves 4 trap particulates, at least one filter unit 3's valve 4 is closed to send an electric current into the heater 14 for regenerating the filter unit 3. If the detected current is beyond a predetermined range, the current supply is shut off with the valve 4 still kept closed, and another filter unit 3 is regenerated in the same manner.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: September 19, 2000
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hidetoshi Saito, Kenji Matsunuma
  • Patent number: 6107603
    Abstract: A device intended to measure fouling and to locally heat an electrical insulating medium. At least one electrically resistive heating element (6, 8) is associated with a fouling detection unit. The fouling detection unit includes metallic elements (6, 10) in contact, at at least two points, with the insulating medium. The resistance variation between the two points is measured and is directly linked with the fouling of the medium.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: August 22, 2000
    Assignee: Institut Francais du Petrole
    Inventors: Jean-Baptiste Dementhon, Brigitte Martin
  • Patent number: 6059864
    Abstract: An air filter used for the filtration of air for a central air and heating system with an internal cleaning apparatus fabricated for easy cleaning of particles from the air filter. This internal cleaning apparatus comprising a cylindrical member with protruding jets adjacent to each other around the mid perimeter of the cylindrical member. The jets receive the porous tubular members which are caped to abstain water form going out the ends. The cylindrical member has a circular posterior member which is affixed to the cylindrical member and is parallel to the circular face member which is unfixed to the cylindrical member. The circular face member has a centrally located female hose fitting protruding downward into the cylindrical member adjacent to the circular posterior member. The female hose fitting receives a male hose fitting, whereby allowing water to flow through the cylindrical member and out the porous tubular members.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: May 9, 2000
    Inventor: Jason Scott Nappi
  • Patent number: 5951746
    Abstract: In order to develop a suction device for cleaning purposes having a collecting container, which includes a closable suction inlet, a suction outlet and a filter disposed therebetween and is connected to a suction unit by a suction line emanating from the suction outlet, the suction line being closable by an outlet valve and an external air supply closable by a supply valve being disposed at the side of the filter remote from the suction inlet, in such a way that it facilitates filter dedusting, it is proposed that the suction device has a valve coupling unit, which links the closing of an inlet valve associated with the suction inlet and/or the opening of the supply valve to the closing of the outlet valve.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: September 14, 1999
    Assignee: Alfred Karcher GmbH & Co.
    Inventors: Felix Treitz, Peter Langer
  • Patent number: 5900043
    Abstract: Electrostatic filter in which the enclosure (2) is fitted with a flexible membrane (12) , behind which an acoustic wave generator (14) is placed and which vibrates the gaseous contents of the filter to detach retained dust and clean the filter.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: May 4, 1999
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Jean-Paul Grandjean, Jean-Raymond Bernard, Guy Pilot
  • Patent number: 5643539
    Abstract: A filter utilizes a filter bed having a ceramic media to remove particulates from process emissions upstream of a regenerative incinerator to prevent fouling of the incinerator. To prevent the filter from fouling, the filter is adapted to "bake-off" contaminants from the filter bed by providing a flow of hot innocuous air through the filter. In addition, fluid can be flushed through the filter.
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: July 1, 1997
    Assignee: Salem Engelhard
    Inventors: Wayne G. Collard, Sean T. Gribbon, Kenneth R. Woodside
  • Patent number: 5595580
    Abstract: There is disclosed a diesel particulate filter for collecting and burning particulates and exhaust gases of a diesel engine and a controlled device therefor. The diesel particulate filter includes a wire net of electric resistance metal fastened to a main filter to burn the particulates collected by the main filter in the exhaust gases of the diesel engine. There is included a bypass pipe which constitutes a sub-filter and which is disposed within a filter case. The bypass pipe is provided with an open-close valve in the vicinity of an inlet thereof. A cylindrical main filter made by laminating long fibers of ceramics is disposed between the bypass pipe and the filter case. The wire net of electric resistance metal for heating the main filter is fastened on one surface of the main filter for receiving the exhaust. A reinforcing net-like plate of a heat resistant metal is fastened on the other surface of the main filter for releasing the exhaust.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: January 21, 1997
    Assignee: Isuzu Ceramics Research Institute Co., Ltd.
    Inventor: Hideo Kawamura
  • Patent number: 5591240
    Abstract: A novel filtering apparatus particularly adapted for a transportable, modular powder spray painting booth with backflow cleaning capability by having two sets of filters each associated with a separate output chamber such that in normal use, a vacuum draws air from the paint booth through both filters and in backflow use, the same vacuum draws air through one filter in a normal filtering manner but with the air first drawn through the other filter in a backflow manner.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: January 7, 1997
    Inventors: Hermann Ophardt, Heiner Ophardt
  • Patent number: 5507851
    Abstract: The invention is an apparatus for cleaning accumulations of dust and waste matter from filter media in industrial installations. The dust and waste matter is removed from the filter media with nozzles that move across the filter media in reciprocatory paths. The apparatus of this invention moves the nozzles in a continuous motion during normal operation without having to successivley stop and reverse at the end each path as in the prior art filter cleaning devices.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: April 16, 1996
    Inventor: H. L. Kennington
  • Patent number: 5458673
    Abstract: For regenerating an exhaust gas particulate collecting filter, there is provided an exhaust gas particulate purifying process in which damage to the filter caused by a thermal action can be prevented and further electric power can be saved when an electric current supply to an electric heater attached to the filter is controlled. In the filter container (4), an electric heater (21) is provided on an end surface of the filter on an upstream side with respect to a regenerating gas flow, or provided at a position close to the end surface. Also, a temperature sensor (22) for measuring a temperature of the filter is provided inside the filter or at a position close to an end surface of the filter opposite to the aforementioned end surface.
    Type: Grant
    Filed: November 26, 1993
    Date of Patent: October 17, 1995
    Assignee: Nippon Soken, Inc.
    Inventors: Akikazu Kojima, Mitsuo Inagaki, Shinji Miyoshi, Fumiaki Arikawa, Takayuki Takeuchi
  • Patent number: 5348572
    Abstract: A device for filtering hot and dusty gases. The device uses hollow filter components. The components are accommodated in groups in a filter housing (1). Every group communicates with a filtered-gas manifold (21) outside the housing by way of a supply line (9) and a filtered-gas line (11). The supply lines extend individually out of the housing. A valve (13) is accommodated in every supply line. An instrument that determines the state of the filtered gas can also be accommodated in every supply line and/or filtered-gas line.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: September 20, 1994
    Assignee: Deutsche Babcock Energie- und Umwelttechnik Aktiengesellschaft
    Inventors: Werner Jelich, Heiko Rehwinkel, Friedrich Klauke, Dieter Konig, Udo Kalthoff
  • Patent number: 5346533
    Abstract: A method of monitoring filter components. The components are hollow and employed for filtering hot and dusty gases. They are accommodated in groups in a housing. Each group communicates through a single supply line with a filtered-gas line. The filtered-gas line conveys the filtered gas away. A sweeper is injected in the form of a gas into each supply line in cycles at higher pressure. The sweeping cycle is recorded. Measurement is carried out in the flow of sweeper and/or of filtered gas. The result of the measurement is compared with the record and an alarm released in the event of a discrepancy.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: September 13, 1994
    Assignee: Deutsche Babcock Energie- und Umwelttechnik Aktiengesellschaft
    Inventors: Werner Jelich, Heiko Rehwinkel, Friedrich Klauke, Dieter Konig, Udo Kalthoff
  • Patent number: 5322534
    Abstract: A self-cleaning air filter is formed by placing a flexible filter bag in an upside-down position with its open end firmly supported. Air to be cleaned is pulled upwardly through the bag. When the air stream is shut off, the bag collapses, discharging accumulated particulate material into the space beneath it.
    Type: Grant
    Filed: February 11, 1993
    Date of Patent: June 21, 1994
    Inventor: David M. Kaiser
  • Patent number: 4921510
    Abstract: A vacuum cleaning system having a receptacle of non-porous material, such as a plastics bag (65), adapted to safely receive and hold hazardous material such as asbestos fibre. Vacuum is applied by a fan (86) to a suction chamber (69) and then through a filter (71) to an intermediate chamber (63) and via a suction pipe (61) to the bag (65). Waste material is sucked into the bag through an inlet pipe (67). The filter is cleaned periodically by admitting atmospheric air through a pulse valve (74) causing an inrush of air through the filter (71) and into the bag (65), cleaning the filter and intermediate chamber (63).
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: May 1, 1990
    Inventor: Arnold Plooy
  • Patent number: 4719662
    Abstract: A dust-removal apparatus for textile machines and machine rooms includes a chamber containing dust-laden air, a clean-air chamber, a tube disposed between and separating the chamber containing dust-laden air from the clean-air chamber, at least part of the tube being a filter element, a suction device connected to the clean-air chamber, another switchable suction device in the form of a filter cleaning device connected to the tube, the tube having an inlet end, and a device for selectively closing the inlet end of the tube.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: January 19, 1988
    Assignee: W. Schlafhorst & Co.
    Inventors: Dieter Horak, Hans-Heinz Schafer, Wilhelm Schmitz
  • Patent number: 4681604
    Abstract: A fluid filter (10) comprises a plurality of separate filtration chamber (14-18) with a fluid inlet (12) and a fluid outlet (13). All of the filtration chambers (14-18) are identical and each contain two vertically-spaced doors (28, 29) on one end and two similarly vertically-spaced doors (30,31) on the other end. In addition, each of the filtration chambers (14-18), includes a trap door (33) through which accumulated particulate matter is discharged. The filtration chambers (14-18) are defined as first and second filtration stages and a cleaning stage. By sequencing the opening and closing of doors (28, 29, 30 and 31) the interconnection between the filtration chambers (14-18) is changed. As particulate matter is accumulated on the inner surface of a filtration medium (25) the first and second filtration stages and cleaning stages are changed so that each of the chambers (14-18), in turn, serve as all or part of the first filtration stage, second filtration stage and cleaning stage.
    Type: Grant
    Filed: April 29, 1986
    Date of Patent: July 21, 1987
    Inventor: Kurt W. Niederer
  • Patent number: 4565555
    Abstract: A unique hybrid shop-style and continuous-duty vacuum collector using a large diameter filter has the advantages and capabilities of both specialized types. Because of efficient design and the use of pleated paper, the effective filter surface area is many times that of a conventional shop vacuum. This enables extended runs between filter cleanings in a reliable portable machine intended for both the hobbyist and the commercial shop operator. The filter cleaning mechanism breaks away the dirt accumulated on the filter surfaces by means of a plurality of shock generators symmetrically located at the filter circumference. These peripherally-generated shocks and the resulting filter oscillations are efficiently distributed by the design to be exactly parallel to the pleated paper surfaces, in order to protect the filter from damage. A mechanical sail interlock prevents further damage by precluding accidental activation of the filter cleaning mechanism during the dirt collection process.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: January 21, 1986
    Inventor: David R. Menasian
  • Patent number: 4557738
    Abstract: A unique hybrid shop-style and continuous-duty vacuum collector of reasonable size offers the advantages and capabilities of both specialized types, by substantially multiplying the conventional shop vacuum effective filter surface area, while preserving machine portability. The preferred embodiment employs three cylindrical pleated-paper filters to collect a wide range of sizes and weights of mixed dust and particulate debris. It is intended for both the hobbyist and the commercial shop operator who desire extended runs between filter cleanings. The filter cleaning mechanism efficiently breaks away the filtered accumulation, but protects the filter material from damage, by the carefully oriented application of mechanical shocks to generate cleaning oscillations of the filter surfaces only in their own planes. A mechanical sail interlock prevents additional filter damage by precluding accidental activation of the filter cleaning mechanism during the dirt collection process.
    Type: Grant
    Filed: May 26, 1982
    Date of Patent: December 10, 1985
    Inventor: David R. Menasian
  • Patent number: 4544388
    Abstract: An apparatus is disclosed for regenerating a filter trap used to collect particulates from the exhaust gas of an internal combustion engine. The apparatus comprises: (a) an assembly providing a flow of a heat transfer medium through the filter trap: (b) an assembly for heating the heat transfer medium to a temperature effective to incinerate the particulates in the filter trap: and (c) a flow mask stationed in the flow of heat transfer medium, upstream from said filter trap, effective to divert the heat transfer medium away from the radially inner zone of the filter trap while guiding the heat transfer medium to engage and ignite the particulates along a radially outer region of the filter trap. The mask is a circular disc and spaced upstream from the filter trap effective to mask a central core area of the flow of heat transfer medium.
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: October 1, 1985
    Assignee: Ford Motor Company
    Inventors: Vemulapalli D. N. Rao, Wallace R. Wade
  • Patent number: 4475933
    Abstract: Particle-laden gas passes downwardly through an inlet duct into inlets of several wedge-shaped deceleration chambers formed by vertical plates radiating from a central region below the bottom of the inlet duct. The inner ends of the plates and the inlet of the chambers are vertically below the bottom of the inlet duct. In each chamber the gas first proceeds towards a particle exit at the bottom of the chamber, then reverses direction and passes upwardly into filter units above wider parts of the chamber, depositing some heavy particles near the particle exit. To purge the chambers and filter units, a suction device is connected to an outlet duct and one or more inlets to the chambers are closed off from the inlet duct simultaneously with the particle exit(s) of the same chamber(s) being connected to the outlet duct.
    Type: Grant
    Filed: August 18, 1982
    Date of Patent: October 9, 1984
    Assignee: Air Pollution (Equipment) Limited
    Inventor: Peter R. Piggin
  • Patent number: 4469595
    Abstract: A paint spray booth including water wash means for removing airborne paint particles from air flowing through the booth. A holding tank at the bottom of the booth collects the water from the water wash means and a pump recirculates the water from the holding tank to the water wash means near the top of the booth. A filtering tank is connected to the holding tank and is located outside the booth. A pair of filters are disposed in series in the filtering tank and filter the water as it passes from the holding tank to the pump. The filters are individually removable from the filter tank for cleaning and/or replacement so that when one filter becomes clogged, it can be removed and cleaned while the other filter continues the filtering process so that there is no interruption in use of the spray booth.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: September 4, 1984
    Assignee: Protectaire Systems Company
    Inventor: Stanley C. Napadow
  • Patent number: 4439218
    Abstract: Cleaning mechanism for a screen such as a radiator screen mounted adjacent an air-cooled radiator and air-circulating fan for a water-cooled engine to prevent debris from clogging the air passages of the radiator and including a frame supporting the screen as aforesaid, a motor driven shaft extending substantially centrally through the screen, transverse arms rotated by the shaft and having dislodging members in wiping relation to the air-inlet face of the screen, and baffle plates carried by the shaft for rotation relative to the air discharge face of the screen and in alignment with the arms and dislodging members to neutralize the suction effect of the air-circulating fan for the radiator and thereby permit debris dislodged by the members to fall by gravity from the screen.
    Type: Grant
    Filed: July 6, 1982
    Date of Patent: March 27, 1984
    Assignee: Sperry Corporation
    Inventors: Edward H. Priepke, Ronald L. McAllister
  • Patent number: 4427418
    Abstract: A device for collecting and burning particulates in exhaust gases from an internal combustion engine comprises: a casing having an inlet port and a discharge port for exhaust gases; at least one trapper of porous and heat resistant material disposed within the casing; and a plurality of electric heaters separately disposed a predetermined distance apart from each other on or adjacent to a surface of the trapper which confronts the inlet port and connected to a power source, each of said electric heaters having a predetermined heating area. This device effectively collects and burns particulates in exhaust gases with reduced amount of electric power.
    Type: Grant
    Filed: March 9, 1982
    Date of Patent: January 24, 1984
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Takeshi Kogiso, Hiroshi Ohkawa
  • Patent number: 4364749
    Abstract: A method and apparatus for isolating one or more of the filter compartments in a baghouse installation wherein an inlet damper having a pair of spaced closure members is provided in the inlet duct of each of the compartments. When the inlet damper associated with one of the compartments is closed to isolate the compartment, the closure members seal off the inlet duct to form a chamber within the duct which is vented to the atmosphere through an air damper adapted to admit heated ambient air into the chamber to prevent the flue gases from seeping into the compartment.
    Type: Grant
    Filed: October 9, 1981
    Date of Patent: December 21, 1982
    Assignee: Allis-Chalmers Corporation
    Inventor: S. Michael Dunseith
  • Patent number: 4350504
    Abstract: A cooking unit having a hood equipped with air cleaning structures and blowers for moving air through the cleaning structures. The air cleaning structures include a pre-filter having spaced baffles for collecting air borne greases and particles. A primary fiber filter and secondary charcoal and oxidizer beds are located downstream of the pre-filter. A high efficiency filter is located downstream of the secondary cleaning beds. A damper behind the pre-filter closes in response to an increase in temperature of the air moving through the filters. A separate heating unit is used to reactivate the charcoal.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: September 21, 1982
    Assignee: Century 21 Pollution Control, Inc.
    Inventor: Wolodymyr Diachuk
  • Patent number: 4295867
    Abstract: The herein-proposed apparatus for separating carbon black from a carbon-black aerosol stream comprises an apparatus in which a carbon-black aerosol is passed through a granular bed of carbon-black grains in a downflow manner. The carbon-black aerosol is separated into solid carbon-black particles that settle down in the granular bed of the carbon-black grains, and cleaned particulate-free gas delivered to the consumer. Part of said cleaned gas is periodically fed in a countercurrent flow to the stream of carbon-black aerosol to regenerate the granular bed of carbon-black grains. The apparatus for carrying this separation comprises a plurality of compartments, each being subdivided into a first and a second chamber through a partition web. Said partition web is a distribution grate with a screen, whereupon the granular bed of carbon-black grains is arranged, the screen having a mesh opening ranging from about 50 to about 200 microns.
    Type: Grant
    Filed: June 8, 1979
    Date of Patent: October 20, 1981
    Inventors: Viktor M. Shopin, Leonid G. Turenko, Vitaly F. Surovikin, Konstantin V. Suponev