In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7655058 | Cyclonic vacuum cleaner A vacuum cleaner includes a pair of low efficiency cyclones connected upstream of respective groups of high efficiency cyclones by respective elongate ducts. The high efficiency cyclones of each group can be arranged in a line or a cluster extending away from their ... | 02/02/2010 |
| 7553347 | Dust separator/collector assembly for suction cleaner A separator/collector assembly (50) able to be installed in relation to a body (51) of a suction cleaner, the separator/collector assembly providing storage for a suction hose which can be deployed for use when required. ... | 06/30/2009 |
| 7479173 | Suction cleaners A cyclonic separator for a suction cleaner comprises a cyclone body of which at least part is afforded by components which fit together at interfaces extending axially of the cyclone body. The components may also afford air inlet and dust outlet passages, and at lea... | 01/20/2009 |
| 7438737 | Vacuum cleaner A cyclone vacuum cleaner including a plurality of cyclone chambers arranged in a group. The cyclone chambers are configured such that frequency characteristics of noises generated from respective cyclone chambers are different from each other. ... | 10/21/2008 |
| 7429284 | Cyclone dust collecting apparatus A cyclone dust collecting apparatus comprises at least one second cyclone unit having a first cyclone unit, an air passage for guiding air discharging via the first cyclone unit, and a discharge pipe wherein the discharge pipe comprises a passage guide member for gu... | 09/30/2008 |
| 7419521 | Dust collecting apparatus for a vacuum cleaner A dust collecting apparatus for a vacuum cleaner has a first cyclone dust collecting part and a second cyclone dust collecting part that are arranged substantially parallel with respect to an air inflow opening of a vacuum cleaner main body, and may be mirror images... | 09/02/2008 |
| 7410516 | Twin cyclone vacuum cleaner An upright vacuum cleaner comprises a housing having a suction airstream inlet and a suction airstream outlet. A dirt container is selectively mounted to the housing for receiving and retaining dirt and dust separated from the suction airstream. The suction airstrea... | 08/12/2008 |
| 7390339 | Vortex separator in particle detection systems A particle separation apparatus is disclosed. The particle separation apparatus may be for sample air stream preparation and delivery in particle detection systems. The particle separation apparatus may include a first vortex separator coupled to a second vortex sep... | 06/24/2008 |
| 7381234 | Dust collecting apparatus for vacuum cleaner Disclosed is a dust collecting apparatus is provided that includes a dust canister body, a part of which becomes an exposed side exposed outside a cleaner body. The cleaner body has a first dust separating chamber for separating large-sized dirt and second dust sepa... | 06/03/2008 |
| 7381233 | Dust collecting apparatus for vacuum cleaner A dust collecting apparatus for a vacuum cleaner, comprising a dust canister body, a part of which becomes an exposed side exposed outside a cleaner body upon mounting in the cleaner body, and which comprises a first dust separating chamber for separating heavy dirt... | 06/03/2008 |
| 7361200 | Cyclone dust separating apparatus and vacuum cleaner having the same A cyclone dust separating apparatus and a vacuum cleaner with the same is disclosed. The cyclone dust separating apparatus includes a first cyclone for separating large dust particles from air, a plurality of second cyclones for separating minute dust particles from... | 04/22/2008 |
| 7351326 | FCC closed cyclone with snorkel Thermal cracking in a riser cracking, closed cyclone, fluidized catalytic cracking process is reduced. A snorkel or flow conduit having an inlet just above the catalyst stripper moves stripper vapor into the closed cyclone. The system preferably operates without a s... | 04/01/2008 |
| 7352838 | Reactor pressure vessel of a boiling water reactor and method for water vapor separation in a reactor pressure vessel of a boiling water reactor A pressure vessel of a reactor has a flow space between the reactor core and a separation device for separating water from water steam. The cross-section area of the flow section of the space expands upstream of the separation device. This makes it possible to pre-s... | 04/01/2008 |
| 7335242 | Multi cyclone dust-collecting apparatus A multi cyclone dust collecting apparatus comprises a multi cyclone unit having a first cyclone and a plurality of secondary cyclones. The first cyclone separates relatively large particles whereas the secondary cyclones separate out smaller particles. The cyclones ... | 02/26/2008 |
| 7335241 | Cyclone vessel dust collector and vacuum cleaner having the same Disclosed are a cyclone vessel dust collection and a vacuum cleaner including the same. The cyclone vessel dust collector comprises a cyclone vessel main-body including a primary cyclone vessel unit for separating dusts from dust containing air, and one or more seco... | 02/26/2008 |
| 7329309 | Gas-solids separation device and method A multi-stage gas-solids separator is configured so that the higher density (solids) output flows of two or more of the separator stages are merged together. The multi-stage separator is preferably composed of cyclone separators, with the diplegs of at least two of ... | 02/12/2008 |
| 7326268 | Multi cyclone vessel dust collecting apparatus for vacuum cleaner A multi cyclone vessel dust collecting apparatus comprises a first cyclone vessel for centrifugally separating contaminants from drawn in air; a plurality of a second cyclone vessels configured on the first cyclone vessel; and a contaminant collecting unit attached ... | 02/05/2008 |
| 7309368 | Cyclone dust-collecting apparatus An improved cyclone dust-collecting apparatus of a vacuum cleaner for efficient collection of fine dusts. The vacuum cleaner which comprises a cyclone body integrally including a first cyclone part and a second cyclone part formed around the first cyclone part, a fi... | 12/18/2007 |
| 7294159 | Cyclone separating apparatus and vacuum cleaner having the same Disclosed is a cyclone separating apparatus and a vacuum cleaner having the same. The cyclone separating apparatus includes a first cyclone for separating dust-ladened air, a plurality of second cyclones for separating fine dust particles via a second separation of ... | 11/13/2007 |
| 7291190 | Cyclonic separating apparatus A cyclonic separating apparatus includes at least one cyclone having a first end, a second end a longitudinal axis. An inlet is located at the first end for introducing a fluid flow into the cyclone, and a cone opening is located at the second end. At least part of ... | 11/06/2007 |
| 7273506 | Cyclone dust collecting apparatus and vacuum cleaner using the same A cyclone dust-collecting apparatus comprises a cyclone body having a first cyclone part and a second cyclone part comprising a plurality of cones, a cover unit connected with the upper portion of the cyclone body for guiding air movement between the first cyclone p... | 09/25/2007 |
| 7273513 | Acid gas removal The use of turbulent contactors to simultaneously absorb selected acid gas components from a gas stream and flash off hydrocarbons entrained in a liquid stream which include a solvent or reagent for the selected gas component. In particular, the method comprises fee... | 09/25/2007 |
| 7198656 | Vacuum cleaner There is disclosed a vacuum cleaner including a dust separation section which separates air and dust flowing toward an intake port of a motor blower through a connection port of a cleaner main body. The dust separation section includes an air path forming member whi... | 04/03/2007 |
| 7179314 | Vacuum cleaner A method for filtering a dirty air stream in a vacuum cleaner to obtain a clean air stream comprises subjecting the dirty air stream to a first cyclonic separation stage to obtain a partially cleaned air stream and subjecting the partially cleaned air stream to an e... | 02/20/2007 |
| 7169201 | Cyclone separating apparatus and a vacuum cleaner having the same A cyclone separating apparatus and a vacuum cleaner having the same are disclosed. More specifically, the cyclone separating apparatus for a vacuum cleaner comprises a first cyclone for separating drawn-in air, and a plurality of second cyclones installed on an oute... | 01/30/2007 |
| 7160347 | Waste separating device for vacuum cleaner The invention concerns a device for separating and collecting waste driven by an air stream, comprising an intake duct (52) emerging along a tangential direction in a waste separating chamber (53) defining an internal volume having substantially the sh... | 01/09/2007 |
| 7128770 | Cyclone dust-collector A cyclone dust-collector which filters out dust and dirt from drawn-in air at least two times, comprising a multiple cyclone unit having a first cyclone and a plurality of second cyclones arranged at the outside of the first cyclone, for centrifugally separating the... | 10/31/2006 |
| 7097680 | Cyclone separating apparatus and vacuum cleaner equipped with the same Disclosed is a cyclone separating apparatus, and a vacuum cleaner having the same. The cyclone separating apparatus includes a first cyclone separating dust from dust-ladened air. A plurality of second cyclones centrifugally separate fine dust particles from air whi... | 08/29/2006 |
| 7011690 | Device for separating liquid from a gas current Known devices for separating liquids using parallel-connected cyclones, when gas flows are fluctuating, have a poor separating action. In the device of the invention, the separating action is conversely improved by providing that the number of separator eleme... | 03/14/2006 |
| 7008304 | Abrasive and dust separator Provided is a centrifuge media separator for separating blast particulate from fine particulate carried by air flowing from a blast cabinet and through the media separator. The centrifuge media separator comprises an upper panel, a lower panel, and an outer wall. Th... | 03/07/2006 |
| 6994740 | Cyclonic separating apparatus including upstream and downstream cyclone units The invention provides cyclonic separating apparatus comprising an upstream cyclone unit and a downstream cyclone unit, the upstream cyclone unit including at least one cyclone having a first end and a second end, and the downstream cyclone unit including at least o... | 02/07/2006 |
| 6991664 | Intake system An intake system for the combustion air of a motor of a hand held implement is provided. The system includes an air filter and a centrifugal separator. The air filter has a dirt chamber and a clean chamber that is separated therefrom by a filter medium. The clean ch... | 01/31/2006 |
| 6974488 | Vacuum cleaner A vacuum cleaner with an external surface incorporates a cyclonic separating apparatus that includes a plurality of cyclones arranged in parallel with one another. The cyclones each have a tapered body with an outside wall and are arranged so that at least a part of... | 12/13/2005 |
| 6926749 | Cyclone separator with compact inlet A cyclone separator is provided with a compact inlet path, in which the inner and outer walls of the inlet path are curved, with the inner wall having a radius that is essentially the same as the radius of the cyclone body wall and with the outer wall wrapping aroun... | 08/09/2005 |
| 6905528 | Conveying air filtration system An arrangement used for filtering out conveying air when supplying fiber material to a processing machine is provided. The arrangement has an essentially vertical filling chute for the fiber material, the chute having an upper intake opening and a lower exit opening... | 06/14/2005 |
| 6902593 | Separation device to remove fine particles A multi-cyclone gas/solids separator with reduced solids re-entrainment is disclosed. The separator uses a plurality of cyclones spaced horizontally apart from adjacent cyclones to process flue gas containing residual catalyst fines. Each cyclone has a body that has... | 06/07/2005 |
| 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 |
| 6863703 | Compact footprint CFB with mechanical dust collector A circulating fluidized bed (CFB) unit utilizing a mechanical dust collector located in a vertical flue above at least one heat exchange surface, and at least partially underneath the floor of a non-vertical flue, includes a plurality of individual collection elemen... | 03/08/2005 |
| 6846463 | Gas-solid separation process Apparatus for separating solid particles from a suspension of solid particles and gas, wherein the apparatus comprises: (i) a vertical primary cyclone vessel having a tubular housing comprising of a tubular wall section provided with a tangentially arranged inlet fo... | 01/25/2005 |
| 6841133 | Separation process and apparatus An apparatus and process is disclosed for the separation of solids from gases in a mixture which is most particularly applicable to an FCC apparatus. The mixture of solids and gases are passed through a conduit and exit through a swirl arm that imparts a swirl motio... | 01/11/2005 |