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| Number | Title | Issue Date |
| 7404833 | Rotary pulse type filter dust collector The present invention discloses a rotary pulse type filter dust collector, which can maintain excellent de-dusting efficiency of a low pressure pulse type filter dust collector, reduce the number of required components in order to reduce manufacturing costs, mainten... | 07/29/2008 |
| 7300481 | Method and device for cleaning filters for dust-laden waste gases The invention relates to a method for cleaning filters for dust-laden waste gases, including several filter elements (2) which are arranged vertically in a filter housing (1) and which have an upper open end (16) and a lower closed end (15 | 11/27/2007 |
| 7147683 | Back-flow valve and trigger for a cleaning machine 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... | 12/12/2006 |
| 7124463 | Conveyor lip for motorized street sweeper A street sweeper system is used typically in a motorized vehicle. The sweeper utilizes a cylindrical brush rotating about an axis that is typically perpendicular to the vehicle's direction of motion. A conveyor belt catches debris thrown forwards and upward by the b... | 10/24/2006 |
| 7082640 | Ambient air backflushed filter vacuum A vacuum cleaning machine has a cannister with an inlet port and at least two outlet ports. At least two filters are disposed inside of the cannister, one in pneumatic communication through each of the outlet ports. At least two valves are disposed outside of the ca... | 08/01/2006 |
| 7024719 | Sweeper drag shoe A sweeper drag shoe used with a rotary broom in sweeping, whereby escaping debris from under a contact skid is recaptured. The sweeper drag shoe contains a deflection plate that redirects bristle tip movement inwardly to allow the broom to recapture debris which esc... | 04/11/2006 |
| 6942717 | Venturi effect material return system of a material collection system and appertaining method A material return system of a material collection system and appertaining method permits fine material collected in a fine material collector to be returned to a main debris tank by taking advantage of the venturi effect, thus permitting a relatively trouble-free op... | 09/13/2005 |
| 6890365 | Reverse-flow baghouse An apparatus and method for removing particulate from a particulate-laden gas stream are disclosed. The apparatus and method include a reverse-flow process for cleaning filter bags with a cleaning gas stream. The process includes: flowing a particulate-laden gas str... | 05/10/2005 |
| 6887290 | Debris separation and filtration systems The invention provides a debris separation-filtration unit comprising a housing; an inlet that receives debris-laden air delivers the air in a tangential, centrifugal airflow-forming manner to the interior of housing; an inner shell that includes a number of airflow... | 05/03/2005 |
| 6830599 | Back-flow valve and trigger for cleaning machine 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... | 12/14/2004 |
| 6605139 | Apparatus and method for improved pulse-jet cleaning of industrial filters An improved apparatus and method for pulse-jet cleaning of filter bags in a baghouse using pulsed, high-pressure/low-volume, intermediate-pressure/intermediate-volume, or low-pressure/high-volume pulsed air flow. Relative movement between a first tubular ... | 08/12/2003 |
| 6309447 | Apparatus and method for improved pulse-jet cleaning of industrial filters An improved apparatus and method for pulse-jet cleaning of filter bags in a baghouse using pulsed, high-pressure/low-volume, intermediate-pressure/intermediate-volume, or low-pressure/high-volume pulsed air flow. Rotation of one pipe relative to another p... | 10/30/2001 |
| 5948127 | Cyclone dust collector A cyclone dust collector wherein the interior of a cyclone body is divided into an upper space and a lower space by a partition member provided with a plurality of cylindrical filters, a suction port is so provided as to communicate with the lower space, ... | 09/07/1999 |
| 4759781 | Filtering and dust collecting apparatus A dust collecting and filtering apparatus in connection with a particulate material processing apparatus to clean the dust laden air discharged by the grinding process of the apparatus consisting of a plurality of dust collectors in an independent operati... | 07/26/1988 |
| 4655799 | Pulse cleaning system for dust filters A cleaning system for dislodging dust from the filter bags of a dust filter having dirty and clean air plenums separated by a tube sheet. The tube sheet is divided into segments each having filter bag openings arranged in the same pattern. An air accumula... | 04/07/1987 |
| 4465497 | Pneumatic cyclic event timing actuator and control circuit for use with air blast filter cleaning and bulk material bin blasting systems A cyclic or periodic event timing system for use in conjunction with a pressure fluid control circuit includes a cylinder and piston type actuator comprising a differential area piston which is exposed to fluid pressure from a flow conduit on opposite sid... | 08/14/1984 |
| 4460389 | Device for filtering dust extracted from factory buildings A device for filtering dust from air drawn by apparatus from a factory shop or building, for example a steelmaking shop, including a plurality of dust extractors which have a total capacity at least equal to the air throughput of the drawn air. The extrac... | 07/17/1984 |
| 4299597 | Process and filter control system for the cyclic counter-scavenging of diaphragm-activated filter hoses A method and apparatus for the cyclical counter-scavenging of filter hoses, particularly the control thereof, is disclosed. According to the present invention, the counter-scavenging of filter hoses is accomplished by gas blasts whose timing and duration ... | 11/10/1981 |
| 4298360 | Pulsed air filter cleaning system A system for cleaning dust collecting filter bags with pulsed air includes a plurality of rectangular channels positioned below a tube sheet supporting rows of filters. A short length of pipe connects the channels through the tube sheet to the top of a ve... | 11/03/1981 |
| 4293320 | High energy reverse air dust collector Apparatus for removing and collecting dust from dust laden air includes a traveling manifold which travels through an upper clean-air chamber back and forth from one end of the baghouse to the other. Process air is directed upwardly and inwardly through t... | 10/06/1981 |
| 4292053 | Declogging process for filtration installation and improved filtration installation The invention relates to filtration apparatus and to a process for a filtration installation comprising several filtration cells equipped with at least one filtering element through which passes a current of dust-laden gas, this process consisting in isol... | 09/29/1981 |
| 4277255 | Cleaning process control method for textile barrier filter material A method of controlling the cleaning process for the cleaning of textile barrier filters, for example bag filters, subsequent to dust precipitation on the filter material. The cleaning is carried out with a cleaning system (14) comprising means (16,17,18)... | 07/07/1981 |
| 4247310 | Pneumatic dust extraction In pneumatic low pressure dust extraction apparatus, filter bags are cleaned by reverse flow of air. Each cleaning operation includes a first shock phase of short duration (not longer than 0.05 sec) but at high flow intensity by which accumulated layers o... | 01/27/1981 |
| 4220457 | Cleaning apparatus for hose filters In an air cleaner device for removing dust or other particles from air, and including a filter system of a circular line of filter bags through the walls of which the air is forced into the interior of the bags, an apparatus for removing accumlations of f... | 09/02/1980 |
| 4157899 | Pulsed backflush air filter A cleaning system for sleeve-type air filters featuring top removal of sleeves of the filtering media and increased filtering capacity, using sharply pulsed backflushing air of short duration from a single source for cleaning the sleeves which requires su... | 06/12/1979 |
| 4022595 | Self-cleaning filter arrangement A filtering device is disclosed for removing particulate solids from a continuously flowing gas stream and which comprises a filter chamber that contains filter bags from which filtered gas is discharged into a plurality of plenum chambers arranged in a r... | 05/10/1977 |
