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| Number | Title | Issue Date |
| 7309365 | Vacuum cleaner A vacuum cleaner including an electric blower for generating suction air, a collecting unit for collecting dust contained in the suction air, a dust removing unit for removing dust adhered to the collecting unit, and a dust removing stop unit for stopping an operati... | 12/18/2007 |
| 7300482 | Particle separation apparatus Particle separation apparatus comprises a cyclone particle separating means, a particle collecting chamber and a fan driven by an electric motor for drawing particle laden air into and through the apparatus. A valve is provided, upstream of the suction fan driving m... | 11/27/2007 |
| 7275417 | Fueling system vapor recovery and containment performance monitor and method of operation thereof A method and apparatus for monitoring and determining fuel vapor recovery performance is disclosed. The dispensing of liquid fuel into a tank by a conventional gas pump nozzle naturally displaces a mixture of air and fuel ullage vapor in the tank. These displaced va... | 10/02/2007 |
| 7207083 | Electric vacuum cleaner The electric vacuum cleaner is disclosed which includes a main body within which an electric blower and cyclonic separation cylinder are provided. A dust collecting case is provided in communication with the cyclonic separation cylinder to receive dust that has been... | 04/24/2007 |
| 7207671 | HEPA filter printhead protection An air flow restriction device relates to an ink jet printhead enclosure with body, a load supportable moveable lid with an opening disposed on the body, and a chamber within the body. Continuous web media is disposed in the chamber with at least one ink jet printhe... | 04/24/2007 |
| 7195678 | Method of installing an inspection port onto asbestos insulated pipe and equipment A method of installing an inspection port on a pipe having asbestos insulation extending therearound in which the method has the steps of positioning the inspection port within a glove bag, affixing an opening of the glove bag onto a surface of the pipe, removing a ... | 03/27/2007 |
| 7146680 | Caster for vacuum cleaner and vacuum cleaner having the same A caster structure for a vacuum cleaner is provided which allows the main body of the vacuum cleaner to be stably positioned at an incline. The caster structure is rotatably supported on a front portion of a bottom surface of the main body of the vacuum cleaner, and... | 12/12/2006 |
| 7134165 | Bagless vacuum cleaner system A vacuum cleaner includes a housing as well as a suction generator and bagless dirt system carried on the housing. The bagless dirt system includes a dirt cup, a prefilter, a filter chamber remote from the dirt cup, a filter in the filter chamber and a first conduit... | 11/14/2006 |
| 6964283 | Fueling system vapor recovery and containment performance monitor and method of operation thereof A method and apparatus for monitoring and determining fuel vapor recovery performance is disclosed. The dispensing of liquid fuel into a tank by a conventional gas pump nozzle naturally displaces a mixture of air and fuel ullage vapor in the tank. These displaced va... | 11/15/2005 |
| 6936095 | Air/particle separator A method of separating particles from particle laden air having a multiple stage separator in which the first stage comprises a generally cylindrical chamber having a hollow central member extending axially from one end thereof with openings in its wall remote from ... | 08/30/2005 |
| 6922868 | Union device for dust-box in cyclone type vacuum cleaner Device for fastening a dust box to a cyclone vacuum cleaner, including an accommodating part having a space in a body of the cyclone vacuum cleaner, a dust box mounted in the accommodating part selectively, for collecting various foreign matters separated from air, ... | 08/02/2005 |
| 6902594 | Industrial dust-collector An industrial dust-collector is provided with an air blower in the bottom of the base. An air-inlet line and an air-out line are provided at the front of the air blower. A cover is provided on the top of the base, a sucking pipe is provided at the top of the cover, ... | 06/07/2005 |
| 6370453 | Service robot for the automatic suction of dust from floor surfaces A self-moving device and method for the complete and full automatic examination of floor surfaces of all kind as well as for a particularly efficient suction of dust therefrom. In each case, the robot is controlled so as to explore the adjacent area and t... | 04/09/2002 |
| 6277246 | Purification of electronic specialty gases by vapor phase transfilling A system and method for purifying liquefied corrosive gases of metallic impurities is described. The principle for this purification method relies on vapor-phase transfilling the vapor phase from a source container into a receiving container. This method ... | 08/21/2001 |
| 6231649 | Apparatus for separating particles from a fluid and a valve for introducing bled fluid to a mainstream fluid A bleed valve (30) for introducing bled fluid to a mainstream fluid through apparatus (16) across which a pressure differential occurs, characterized in that the bleed valve (30) is adapted to open so as to bleed fluid into the mainstream fluid when the p... | 05/15/2001 |
| 6093226 | Vacuum filtration system A filtration apparatus for an industrial vacuum system which includes a source of vacuum pressure, a collection vessel having an opening at one end for the collection of solid particulate matter and liquid waste material, and a conduit extending between t... | 07/25/2000 |
| 5951746 | Suction device for cleaning purposes 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 ... | 09/14/1999 |
| 5242474 | Dual mode laser smoke evacuation system with sequential filter monitor and vacuum compensation A surgical laser smoke evacuation system includes a sensor positioned at the surgical site to determine the need for evacuation. A vacuum pump draws smoke from the site through a system of conduits, including an in line filter. The filter tends to become ... | 09/07/1993 |
| 5201095 | Motor controlling apparatus for a vacuum cleaner A motor controlling apparatus for a vacuum cleaner comprising a cylinder disposed on the base of the vacuum cleaner, a spring base mounted at lower portion of the cylinder and provided with an aperture communicating with the hole of the base, a spring mou... | 04/13/1993 |
| 5151111 | Vapor recovery system for vehicle loading operation The present invention discloses a vacuum-assisted vapor recovery system for loading vessels with volatile materials such as liquid hydrocarbons, including gasoline and distillates, which system utilizes a series of interlock premissives and vacuum control... | 09/29/1992 |
| 5145496 | Centrifugal air cleaner A centrifugal air cleaning apparatus includes a housing defining a filter compartment containing a generally tubular filter cartridge having the open upper end thereof in communication with an air outlet opening through the top wall of the filter compartm... | 09/08/1992 |
| 5096474 | Negative pressure filtration device A negative pressure filtration device is used in conjunction with a containment enclosure for the removal of hazardous material such as asbestos insulation surrounding pipes in habitable buildings. The inventive negative pressure filtration device generat... | 03/17/1992 |
| 5092913 | High capacity low resistance vacuum cleaner A multi-compartment vacuuming machine which maintains a high flow rate capacity and low resistance from obstructions in the flow path through arrangement of the multiplicity of vacuum canisters in parallel so that obstructed flow in one filter canister wi... | 03/03/1992 |
| 5069693 | System for area pollution control A system for collecting and purifying polluted air over a large geographic area where surface level water channels are used for rainfall drainage. The water channels are covered to render them air passages as well, and air jet engines draw the polluted ai... | 12/03/1991 |
| 4929261 | HEPA filter module A HEPA-type filter including a cannister body with an inlet and outlet coupled through a filter unit having at least one prefilter and a HEPA-type filter therein. The prefilter protects the HEPA-type filter from moisture and clogging. The module can inclu... | 05/29/1990 |
| 4859218 | Device for controlling refuse discharge in textile cleaners A control unit for controlling refuse discharge in a textile cleaner comprises a spring-biased membrane which is in contact with a pressure chamber or a vacuum chamber of the cleaner in which a turbine and a refuse collecting filter are installed. An elec... | 08/22/1989 |
| 4820319 | Remote control and monitor means A remote control-monitor console is provided for controlling and monitoring air filtration units located within an enclosed work area in which an asbestos abatement action is taking place. A pressure differential sensor is associated with at least one of ... | 04/11/1989 |
| 4465485 | Suction canister with unitary shut-off valve and filter features A suction canister assembly comprises an enclosed receptacle having a first opening for providing suction to the receptacle and a second opening for drawing fluids, including liquids and gases, into the receptacle during suction. A unitary shut-off valve/... | 08/14/1984 |
| 4299600 | Trapper device for collecting and incinerating fine particulates included in exhaust gas from a diesel engine A trapper apparatus arranged in the exhaust line of a diesel engine, provided with a pair of transversely separated trapper units and with a valve plate arranged before units for selectively introducing the exhaust gas from the engine into one of the unit... | 11/10/1981 |
| 4294595 | Vacuum cleaner including automatic shutoff device An automatic shutoff arrangement for a vacuum cleaner of the "clean air" type in which the vacuum fan is downstream of the dirty air passageway and vacuum filter. The automatic shutoff arrangement includes an apparatus for sensing a selected characteristi... | 10/13/1981 |
| 4246676 | Liquid collecting vacuum container An air and liquid tight liquid collecting container includes a cover which may be sealed to the top of the container. The cover includes an inlet port adapted to be connected to a hose which in turn carries a nozzle at the end thereof for picking up liqui... | 01/27/1981 |
| 4016994 | Mobile vacuum and pneumatic unit A mobile vacuum and pneumatic unit of the sort which is usually truck mounted and self-contained is disclosed. The unit usually has two independent tanks, side-by-side, and two vacuum units which may be operated independently or in aiding relationship. Ge... | 04/12/1977 |
