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 |
| 8097059 | Exhauster bypass system An exhauster bypass system 20 receives an input flow of gases and entrained fine solid particles 15 from a pulverizer 12 and separates the input flow into a particle-deficient gas flow and a particle-laden gas flow. The particle-deficient gas fl... | 01/17/2012 |
| 7914597 | Dust collector A dust collector includes turbofans with inducers fixed to the shafts of electric motors. The electric motors are fixed to the rectangular body with mounting legs. The dust collector further includes a single dust collecting filter under the turbofans. The turbofans... | 03/29/2011 |
| 7771501 | Blower having oil-mist filtering function A blower having oil-mist blower is disclosed. The blower is provided with tubing fitting on the wind suction opening connecting in series to an oil-collection box module. The position of the venting tube of the blower is connected to cyclone-separator. The oil-colle... | 08/10/2010 |
| 7763091 | Distributed vacuum debris collector A dust collector has a vacuum coupling for connection to a vacuum source such as a portable vacuum cleaner or other suitable source. A vacuum reservoir is formed from a chamber between nested interlocking receptacles. A variable density pattern of inlet holes throug... | 07/27/2010 |
| 7695538 | Negative pressure dust collector with a dust receiving bag smoothly inflatable A negative pressure dust collector with a dust receiving bag comprises a ventilation hood and an exhaust device. The ventilation hood includes a motor, fan blades, and a first exit. A dust collection tank is positioned below the first exit. The exhaust device compri... | 04/13/2010 |
| 7695537 | Dust collector with a function of secondary collection A dust collector with a function of secondary collection is composed of a bottom base,an air guiding box installed above the bottom base and bored with a suction hole and a dust collecting hole at its upper and bottom surface respectively, a guiding device set insid... | 04/13/2010 |
| 7691164 | Suction device A suction device for a cyclone filter of a hand-guided work apparatus includes a blower which is located in a housing and a starting unit with a cable drum which is rotatably mounted about an axis, wherein ambient air sucked in with dirt particles is divided by the ... | 04/06/2010 |
| 7674305 | Air cleaning fan/fan blade A fan blade having a hollow housing allowing air to enter into the front or rear opening of the fan blade and directed to exit out the side opening of the fan blade after having passed through a filter. Use of this fan blade is a method for removing particulates fro... | 03/09/2010 |
| 7615090 | Compact central vacuum unit A central vacuum unit comprises a cyclonic chamber having a sidewall. A motor causes a swirl of air loaded with debris to centrifugally contact an inner surface of the sidewall of the cyclonic chamber. A lateral outlet is defined through the sidewall to provide for ... | 11/10/2009 |
| 7527665 | Removable air filter system for compressors A compressor including a shroud for at least partially encompassing a component included in a compressor. A recess suitable for accepting at least two differently sized air filters having a similar geometric shaped is formed in the shroud. The compressor/filter syst... | 05/05/2009 |
| 7438735 | Filter apparatus with automatic cleaning A filter apparatus includes a gas-impermeable outer conduit having an open end and a closed end. The interior of the outer conduit is axially divided into first and second sides. A first clean and first dirty flow path are defined within the first side. A first gas-... | 10/21/2008 |
| 7431753 | Oxygen enrichment apparatus An oxygen enrichment apparatus includes a main body including an oxygen enriching unit and a pump unit for supplying oxygen-enriched air obtained by the oxygen enriching unit to a predetermined place; a ventilating unit for suctioning exterior air into the main body... | 10/07/2008 |
| 7416574 | Filter apparatus, exposure apparatus, and device-producing method A filter apparatus for improving gas temperature stability while maintaining a high impurity removal capacity. The filter apparatus includes a filter for removing impurities from a gas and a temperature adjuster for adjusting the temperature of the gas to a predeter... | 08/26/2008 |
| 7404835 | Collection device with self sealing retention system A debris collection device with a self cleaning retention system that is designed for powered tools such as a sander. One embodiment of the system has an inflatable collection bag and a bag retention system, which further includes an integral bag adapter nozzle for ... | 07/29/2008 |
| 7387652 | Emergency bio-filter A portable filter assembly for providing filtered air to an enclosed space includes a housing having an exhaust port connected to the enclosed space, an internal air intake port connected to the enclosed space, and an external air intake port connected to the outsid... | 06/17/2008 |
| 7374594 | Filter and system for improved sealing and ease of attachment on a vacuum cleaner The disclosure provides a system for mounting and sealing a filter in a vacuum cleaner, such as a wet and dry vacuum cleaner, that concentrates compressive sealing forces on a specific, relatively thin seal portion rather than the filter body as a whole. The concent... | 05/20/2008 |
| 7371266 | Apparatus for cleaning a diesel particulate filter with multiple filtration stages The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device includes a source of high pressure fluid and a mechanism transport the fluid to a nozzle or nozzles; an actuator for moving the no... | 05/13/2008 |
| 7332006 | Ventilating and air purifying device Ventilating and air purifying device including a case having a blower therein provided to a ceiling or a wall, a first flow passage provided between the blower and a room for making an outdoor, the blower, and the room in communication, a second flow passage for mak... | 02/19/2008 |
| 7332007 | Dusting device with multiple stream nozzles A dedusting device 1 with a demister 15 advantageously arranged standing obliquely has a very compact construction because sufficient moistening or wetting of dust-containing crude air 24 is possible through the use of intensively acting multipl... | 02/19/2008 |
| 7329308 | Air handling and chemical filtration system and method The present invention relates to systems and methods for controlling humidity and temperature in gases or air streams used in semiconductor processing systems. These systems and methods can be used in combination with systems and methods for contaminant detection an... | 02/12/2008 |
| 7323023 | Cyclone separator A cyclone separator (14) for use in a suction apparatus (4) of a hand-held power tool (2) includes a dirty air inlet (12), a suction ventilator (38) for aspirating, through a suction opening (8) which is connected with the d... | 01/29/2008 |
| 7323027 | Fan fixture and housing assembly containing the fan fixture A fan fixture includes a base having a chamber to receive a fan, the chamber of the base having two adjacent side faces formed with a slot and an air inlet respectively, a cover detachably mounted on the base to fix the fan in the chamber of the base and having a pl... | 01/29/2008 |
| 7323026 | Safety cabinet for antibiohazard A safety cabinet which can prevent contaminated air from leaking from a working space through the periphery of a front shutter, and which can prevent outside air from entering the working space has a peripheral structure part surrounding the working space formed wit... | 01/29/2008 |
| 7318850 | Floor standing treatment device The present invention relates to a floor standing treatment device that has a front panel and a mainframe assembly adapted to be removably attachable to the front panel. The mainframe assembly has an integrally molded latching mechanism having a latch and one or mor... | 01/15/2008 |
| 7314355 | Compressor including deviated separation chamber A compressor is provided with an oil separator disposed in between a discharge chamber of a refrigerant and a discharge port connected to a circulating path for the refrigerant. The oil separator has a separating chamber into which the refrigerant flows from the dis... | 01/01/2008 |
| 7309369 | Filter module The invention relates to a filter module in the form of a hollow body with at least one chamber. The walls of the hollow body are made of a non-metallic material that can be comminuted and/or disintegrated in a recycling process. The material is a paper product, suc... | 12/18/2007 |
| 7309387 | Methods and apparatus for a low-profile air purifier An air purifier having dimensions that enable the air purifier to be more discrete is disclosed. The air purifier also includes components that enable the air purifier to mimic a particular environment in which the air purifier may be placed. In addition, the air pu... | 12/18/2007 |
| 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 |
| 7306640 | Vacuum cleaner A vacuum cleaner includes a first dirt separation unit and a second dirt separation unit. The first dirt separation unit has a first inlet port through which a suction air stream including dirt particles is introduced thereinto, and the second dirt separation unit h... | 12/11/2007 |
| 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 |
| 7291195 | Durable filter cage for air-moving system The disclosure provides a system having a cage mounted in an air-moving system, such as a wet and dry vacuum cleaner, which provides energy-absorbing structural ribbing for a more robust cage. The energy-absorbing ribs can tolerate impacts better than the relatively... | 11/06/2007 |
| 7291205 | Air cleaner An air cleaner eliminates moisture laden in air, thus preventing the moisture from being added to a dust collecting filter and, for example, a deodorizing filter, therefore preventing performance of the dust collecting filter and the deodorizing filter from being de... | 11/06/2007 |
| 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 |
| 7273507 | On-board inert gas generation system An on-board inert gas generation system provides first and second compressors in fluid communication with one another. The second compressor includes an inlet and an outlet. The inlet is in fluid communication with the first compressor. The second compressor is the ... | 09/25/2007 |
| 7251952 | Air chiller unit The invention provides an improved air chiller unit mounted on an aircraft for sending cooled air to service carts for serving meals. An air chiller unit is equipped with a refrigeration cycle unit disposed on a casing. The refrigeration cycle unit is equipped with ... | 08/07/2007 |
| 7208031 | Portable paint spray capture assembly The apparatus is a portable paint spray capture apparatus that limits dispersion of sprayed paint and permits spray painting small surfaces in unenclosed areas without harming the environment or nearby objects. An open top container is located below the surface bein... | 04/24/2007 |
| 7201786 | Dust bin and filter for robotic vacuum cleaner A detachable dust bin for a vacuum cleaner. A container is provided with a removable sidewall which has an outlet opening which is adapted to be coupled to a source of vacuum. The container includes an inlet for connecting to a passageway which is connected to a vac... | 04/10/2007 |
| 7195660 | Pillow with air filter A travel pillow has one or more air filters and a body with a soft material coupled to the one or more air filters. The air filters can be powered by a power source located within the pillow. The one or more air filters can have an air intake and an air outflow in c... | 03/27/2007 |
| 7189272 | Movable spray painting stand A movable spray-painting stand includes a worktable provided with four casters and having a wind-exhausting device and a filtering device assembled thereon. The wind-exhausting device has an air inlet communicating with the wind outlet of the filtering device. A sep... | 03/13/2007 |
| 7172639 | Apparatus for preparing pure carbon dioxide (CO) from a gaseous carbon dioxide containing product The invention relates to an apparatus for preparing pure carbon dioxide (CO2) from a gaseous CO2 containing product, which apparatus comprises a processing line which comprises at least an inlet for the gaseous product, means for removing water... | 02/06/2007 |