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| Number | Title | Issue Date |
| 7357823 | Disposable filter within a removable chamber A vacuum cleaner includes a housing, a nozzle inlet, a suction generator and a dirt cup. The dirt cup includes a dirt collection chamber, an inlet and an open end. Additionally, the vacuum cleaner includes a filter assembly. The filter assembly includes a filter hou... | 04/15/2008 |
| 7293324 | Vacuum cleaner with level control A vacuum cleaner has a housing that includes a separation chamber and collection chamber, a floor unit with a suction opening, and a passage between the suction opening and separation chamber. A suction source establishes a stream of air from the suction opening to ... | 11/13/2007 |
| 7287301 | Utility vacuum A utility vacuum that may be configured to employ a disposable bag or removable and reusable container for the collection of dirt and debris that are drawn into the utility vacuum. The utility vacuum may employ one or more movable legs that are movable between an ex... | 10/30/2007 |
| 7073771 | Porous valve assembly A valve assembly for controlling the flow of a predetermined fluid, including a tube having an open end forming an outlet port, and wherein the tube is made of a material that is porous with respect to the predetermined fluid, an outer wall forming a fluid chamber c... | 07/11/2006 |
| 7036412 | Blind cutting center with detachable vacuum bag A method and apparatus for sizing window coverings slidably extendable from a bay into an aisle of a retail outlet. The method includes the steps of locating the center of the window covering relative to a cutting station utilizing a half scale for removing a portio... | 05/02/2006 |
| 6926759 | Air filter An air filter baffle unit that works with large type canister wet/dry type vacuums. The baffle unit also can be used in large air filter systems and can be ganged to increase filtering. The baffle unit has two sections that are connected for use. An inlet pipe is co... | 08/09/2005 |
| 6776823 | Gas/liquid separating devices Gas/liquid separating devices include a separator (1) for separating a mixed gas/liquid flow (M). A liquid drain (2) communicates with the separator and defines a liquid storage chamber (30). The liquid drain serves to temporarily store a liquid... | 08/17/2004 |
| 6767380 | Drum lid for minimal liquid carryover in a vacuum system A universal drum lid for vacuum systems includes an inlet port configured to intercept downwardly flowing influent at a baffle and engage a direction plate which redirects the flow laterally against an adjacent side wall of the receptacle. An outlet port is shielded... | 07/27/2004 |
| 6517596 | Wet pickup attachment for vacuum cleaners A wet pickup attachment for vacuum cleaners has a pair of independent float operated valves to close primary and secondary exhaust openings responsive to different water levels in a collection tank and thereby prevent aspiration of water into a vacuum cle... | 02/11/2003 |
| 6481049 | Self-evacuating vacuum cleaner A vacuum cleaner has an electric motor driving an air impeller for creating a low pressure and a pump which draws liquid material through an inlet tube from the bottom of a tank and expels it from the tank. A priming apparatus is provided for priming the ... | 11/19/2002 |
| 6226831 | Self-evacuating vacuum cleaner A pump has a housing defining a pump chamber and having a shaft opening. An impeller shaft extends through the shaft opening and is sized to define a gap between the impeller shaft and the shaft opening. An impeller is attached to the shaft inside the pum... | 05/08/2001 |
| 6213146 | Valve assembly for preventing liquid ingestion and methods A valve assembly includes a housing and a float. The housing is constructed and arranged to inhibit movement of the float between a resting position to a position where it is situated in its valve seat, unless a selected liquid volume within the valve hou... | 04/10/2001 |
| 6113663 | Vacuum cleaner having a dual filter assembly A vacuum cleaner having a dual filter assembly includes a filter cage, a primary filter disposed on the filter cage, and a secondary filter disposed downstream of the primary filter. A float valve between the primary filter and the secondary filter inhibi... | 09/05/2000 |
| 6112366 | Outlet priming self-evacuation vacuum cleaner A vacuum cleaner has an electric motor driving an air impeller for creating suction and a pump which draws liquid material through an inlet tube from the bottom of a tank and expels it from the tank. A priming mechanism is disposed in fluid communication ... | 09/05/2000 |
| 6081962 | Upright water extraction cleaning machine with improved float assembly A portable surface cleaning apparatus has a base for movement along a surface to be cleaned and an upright handle pivotally attached to a rearward portion of the base. A fluid dispensing nozzle for applying fluid to the surface and a suction nozzle for pi... | 07/04/2000 |
| 6009898 | Valve assembly for preventing liquid ingestion and methods A valve assembly includes a housing and a float. The housing is constructed and arranged to inhibit movement of the float between a resting position to a position where it is situated in its valve seat, unless a selected liquid volume within the valve hou... | 01/04/2000 |
| 5958108 | High volume air-water separator Apparatus and methods for separating fluids of differing specific gravities are discussed. More specifically, apparatus and methods for separating a high volume flow mixture of air and water into an essentially dry air component and a pure water component... | 09/28/1999 |
| 5954863 | Wet and dry vacuum with float valve system A wet and dry vacuum that includes a housing that is open across its top end and is arranged to be covered by a removable lid wherein is mounted a vacuum source. The housing includes an inlet port to receive a vacuum hose connected therein to pull in wet ... | 09/21/1999 |
| 5918344 | Self-evacuating vacuum cleaner A vacuum cleaner has an electric motor driving an air impeller for creating suction and a pump impeller which is located in the tank and draws liquid material from the bottom of the tank and expels it from the tank. The vacuum cleaner may have an electric... | 07/06/1999 |
| 5824135 | High volume air-water separator This invention consists of apparatus and methods for separating fluids of differing specific gravities, and more particularly apparatus and methods for separating a high volume flow of fluid comprising a mixture of air and water into an essentially dry ai... | 10/20/1998 |
| 5820657 | Method and apparatus for percolating vacuum cleaning Method and Apparatus for Percolating Vacuum Cleaning wherein driven by vacuum incoming to the apparatus mixture of air and other substances is directed under the top surface of a liquid, where heavier than air particles remain, but cleaned air particles p... | 10/13/1998 |
| 5762684 | Treating liquid supplying method and apparatus A degassing module mounted in an intermediate position of a delivery pipe includes a fluid passage formed of a gas-permeable film material. The fluid passage is enclosed in a gas-tight vacuum chamber. A degassing pipe is connected to the vacuum chamber. T... | 06/09/1998 |
| 5762690 | Dehumidifier for supplying air using variable flow rate and variable pressure in a membrane dryer The present invention utilizes a membrane cartridge that removes water vapor or fluid from air that passes through the cartridge. The longer the air remains within the cartridge, the more fluid is removed from the air. Consequently, as the air becomes "dr... | 06/09/1998 |
| 5570489 | Liquid extraction device for a vacuum cleaner A liquid extraction device for a vacuum cleaner includes a base equipped with wheels, a container having an opening and a closed bottom end received on the base, a cover sealedly mounted over the opening of the container and a filter assembly fixedly atta... | 11/05/1996 |
| 5498270 | Sulfur trap A sulfur trap includes a vertically-elongated upper chamber, a lower chamber, a segregating wall, an orifice in the segregating wall, an upwardly extending hollow cylinder adjacent the orifice, a sphere disposed in the upper chamber, the sphere engaging t... | 03/12/1996 |
| 5273561 | Critically safe volume vacuum pickup for use in wet or dry cleanup of radioactive enclosures A physical compact vacuum pickup device of critically safe volume and geometric shape is provided for use in radioactive enclosures, such as a small glove box, to facilitate manual cleanup of either wet or dry radioactive material. The device is construct... | 12/28/1993 |
| 5205014 | Vacuum cleaner having a liquid medium filter A vacuum cleaner has wet and dry modes. In dry mode, air containing dust is passed through a multi-stage filter including adjacent subchambers containing a liquid for removing microscopic dust from the incoming air. The liquid is prevented from being exha... | 04/27/1993 |
| 5192344 | Wet filter vacuum cleaner A vacuum cleaner having a substantially cylindrical tank with a bottom, a cover which pneumatically closes the tank to define a vacuum chamber, an eccentric inlet and an outlet through the tank cover which define a pneumatic path through the chamber and a... | 03/09/1993 |
| 5182834 | Vacuum pump-out control valve for wet/dry vacuum cleaner A pump-out control valve for use in connection with a wet/dry vacuum cleaner that includes a collection tank, a top cover and a vacuum blower with an air inlet and air outlet. The control valve is mounted over a pair of openings formed through the cover. ... | 02/02/1993 |
| 5122167 | Free-flow gas filter assembly A gas filter assembly for filtering pressurized gas comprises a body with a gas inlet port and a gas outlet port with a central passageway extending downwardly from the inner end of the outlet port, a bowl connected to the bottom portion of the body with ... | 06/16/1992 |
| 5032155 | Wet/dry vacuum with automatic shutoff A wet/dry vacuum cleaner including a tank for the collection of liquid, an inlet socket for connection to a suction head, a cover for closing the top of the tank, and a centrifugal vacuum blower mounted on the cover with an axial air inlet opening to the ... | 07/16/1991 |
| 5002592 | Waste tank for a vacuum sewage system A waste tank for a vacuum sewage system installed in a transport vehicle comprises a receptacle portion for receiving sewage up to a predetermined maximum filling level. The tank defines an inlet opening for admitting air and sewage to the tank and an out... | 03/26/1991 |
| 4951700 | Equipment for measuring the yield of oil wells An apparatus is disclosed for the continuous and reliable measurement of the yield of oil wells. The fluid from the well, consisting of mixture of oil and gas, is directed into a two-phase separator having separate outlets for gas and liquid. Within the s... | 08/28/1990 |
| 4934021 | Vacuum cleaning water separator Vacuum cleaning water separator for a vacuum cleaner including a receptacle (1) having a cover (2), and a closing mechanism (7) comprising a float operable valve (10) to seal-off a suction channel (8) when the receptacle is filled to a predetermined level... | 06/19/1990 |
| 4894881 | Wet/dry vacuum machine A vacuum machine for collecting hazardous materials is adapted for wet or dry applications without diminishing the storage capacity of the reservoir.... | 01/23/1990 |
| 4847943 | Liquid extraction surface cleaning apparatus A liquid extraction surface cleaning apparatus has an upwardly opening recovery tank and a top for the tank which contains a suction fan having a suction inlet opening into the tank. A wand connects to a source of cleaning liquid and has a dispensing and ... | 07/18/1989 |
| 4842622 | Gas/liquid/solids separator The apparatus includes a swirl vanes device for reducing the velocity of exhaust fumes fed into an enclosed container with the accompanying direction and volume changes enhancing the separation of the exhaust into gas, liquid, and solid components. Solids... | 06/27/1989 |
| 4821367 | Recovery chamber for spray-type vacuum cleaning apparatus A recovery chamber for collection of dirt-laden fluid in a spray-type vacuum cleaning apparatus. The apparatus has a container for collection of the fluid, a vacuum source located at the bottom of the container and an open-ended riser tube centrally mount... | 04/18/1989 |
| 4708157 | Air eliminator for fluid handling systems An air eliminator for liquid handling systems comprises a cylindrical container having a liquid inlet and a liquid outlet which are separated from one another by a cylindrical porous barrier positioned to subdivide the interior of the container into first... | 11/24/1987 |
| 4668254 | Gas/liquid/solids separator The apparatus separates exhaust fumes of an internal combustion engine into gas, liquid, and solids and comprises a container having an internal wall for substantially reducing the velocity of fumes fed into the container and allows the liquid and solids ... | 05/26/1987 |
