...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 8186006 | Dust separation apparatus of vacuum cleaner A distribution unit for a dust separating apparatus of a vacuum cleaner is provided. The distribution unit distributes air and dust to the dust separation unit includes a body having an inlet for introducing the air and dust to the body, a plurality of branch passag... | 05/29/2012 |
| 8186005 | Vacuum cleaning device The invention relates to a vacuum cleaning device comprising a dirt collection container which has a suction inlet and is in flow connection with at least one suction unit via at least one filter and at least one suction line, and comprising at least one external ai... | 05/29/2012 |
| 8176596 | Vacuum cleaner Several alternate improvements of a vacuum cleaner are provided. In one aspect, the vacuum cleaner utilizes interchangeable components. In another aspect, the vacuum cleaner comprises a chamber having a top, and a first cleaning stage and suction motor are provided ... | 05/15/2012 |
| 8161597 | Shop vacuum cleaner with cyclonic separator A shop vacuum cleaner has a series of dust separation stages, with the large majority of the dust being preseparated in a cyclonic separator and deposited into a first drum or barrel. The remaining dust is carried in the air stream is filtered out in a pre-filter in... | 04/24/2012 |
| 8151409 | Vacuum cleaner A vacuum cleaner is provided in which detachment of a dust collection device and compression of dust may be selectively performed. The vacuum cleaner may include a main body, a dust collection device selectively mounted on the main body, and a dust separation device... | 04/10/2012 |
| 8141201 | Electric fan A side plate of an impeller is formed so that the height thereof is lowered gradually from an edge portion of a central opening portion toward a circumferential portion. When the distance from the edge portion of the central opening portion to the circumferential po... | 03/27/2012 |
| 8141200 | Air inlet for a vacuum cleaner A vacuum cleaner 2 having a housing 4 having an inlet 12 and an outlet 54 is disclosed. Actuation of a motor 46 causes a fan to displace air out of outlet 54, and the resulting suction upstream of the fan draws dirty air thr... | 03/27/2012 |
| 8099828 | External filter chamber An external filter box for a surface maintenance machine having a hopper with selective communication being provided between the filter box and the hopper to permit dusty air to flow from the hopper to the filter box and to permit dust and debris captured by the fil... | 01/24/2012 |
| 8099829 | Wet type suction cleaners A wet type suction cleaner comprising a tank (10) having an inlet (22) for suction-induced air flow and an outlet leading to a fan for creating the suction: and a float valve assembly (30) including a housing (32) and a float member movab... | 01/24/2012 |
| 8087124 | Vacuum cleaner and disposable vacuum cleaner bag The disclosed disposable vacuum cleaner has a disposable bag with a collar at the bottom, rather than on the sides. Dirty air enters the bag vertically, rather than horizontally, through a duct that is positioned near the floor, separate from the handle on the vacuu... | 01/03/2012 |
| 8051531 | Cleaning appliance A cleaning appliance such as a vacuum cleaner includes a main body housing a motor and fan unit for generating a fluid flow. The main body also houses a removable pre-motor filter located upstream of the motor and fan and a removable post-motor filter located downst... | 11/08/2011 |
| 8032983 | Dust cup latch for cyclone separator vacuum A latching mechanism for the dust cup assembly on a bottom exit cyclone-separator vacuum cleaner, including a non-rotating annular seal member supporting the dust cup assembly above a discharge outlet, and a U-shaped slide lock member movable in and out underneath t... | 10/11/2011 |
| 8028373 | Vacuum cleaners A vacuum cleaner (2) having a body (4) having a floorhead (6) and an elongate handle (14) pivotably mounted to the body is disclosed. A door (24) is provided on an end (20) of a collection chamber (12) opposite to a c... | 10/04/2011 |
| 8015659 | Air flow passage for a vacuum cleaner A vacuum cleaner is provided having improved pressure loss characteristics. A fluid supply conduit in flow communication with an inlet to a cyclone is integrally formed as part of a cyclone bin. The present invention may be adapted for use with cyclonic separation d... | 09/13/2011 |
| 8015660 | Vacuuming device A vacuuming device has a housing having an air intake and at least one air outlet opening. A suction motor is arranged in the housing. At least two filters are arranged in the housing and each has a flow passage to the suction motor, wherein dirty air sucked into th... | 09/13/2011 |
| 7996956 | Collecting chamber for a cleaning appliance A cleaning appliance includes a main body and a collecting chamber releasably held on the main body. The collecting chamber includes a closure member which is movable between a closed position and an open position in which the collecting chamber can be emptied and a... | 08/16/2011 |
| 7987551 | Vacuum cleaner A vacuum cleaner is provided. The vacuum cleaner may include a dust collection container that stores dust, a compression member that is provided in the dust collection container and which is capable of rotating in first and second directions, and a driver that rotat... | 08/02/2011 |
| 7979956 | Vacuum bag attachment device and method A vacuum bag (10) attachment device and method. One embodiment provides a device for attaching a vacuum bag to a suction port of a vacuum cleaner (11), wherein the vacuum cleaner has a fixation projection (22) positioned adjacent the suction por... | 07/19/2011 |
| 7979957 | Apparatus for collecting lightweight packing particulates A vacuum cleaner attachment useful to collect dispersed packing particulates and the like comprises a thin-walled polymeric enclosure defined by a plurality of generally planar panels surrounding at their free edges a receiving opening through which the particulates... | 07/19/2011 |
| 7962996 | Mobile yard vacuum cart for use with hand-held leaf blowers A mobile yard vacuum cart that incorporates a leaf blower and trash can into a vertical support assembly that allows an operator to collect leaves into the trash can for disposal simultaneously while moving the mobile yard vacuum cart across a lawn without lugging t... | 06/21/2011 |
| 7950104 | Vacuum cleaner having dust-separating apparatus with shutter unit A vacuum cleaner is disclosed that includes a dust-separating apparatus, a shutter unit, and a dust receptacle. The dust-separating apparatus can be fixed to a cleaner body and includes a dust outlet. The shutter unit is formed on the dust-separating apparatus to se... | 05/31/2011 |
| 7937803 | Bag hold-down for dust collection system A vacuum bag hold-down arrangement for a dust collection system maintains a negative pressure in the space between a dust collection drum and a plastic film liner or bag in the drum. A cyclonic separator at the station separates the dust from an air flow and deposit... | 05/10/2011 |
| 7908706 | Upright vacuum cleaner with cyclonic air path A vacuum cleaner dirt container having a chamber with an upper opening, and a removable filter element. The filter element has an upper portion with an opening and a peripheral edge that engages an upper edge of the chamber. A filter portion extends from the upper p... | 03/22/2011 |
| 7874040 | Cyclonic separating apparatus A cyclonic separating apparatus includes a cyclonic separator for separating dirt and dust from an airflow, an inlet to the cyclonic separator and a shroud comprising a wall having a multiplicity of through-holes forming an outlet from the cyclonic separator. The ap... | 01/25/2011 |
| 7797791 | Vacuum with panel filter A vacuum is provided with a removable filter tray that allows a user to access the filter without having to disassemble the vacuum. The filter can then be changed or cleaned and easily replaced without disassembly of the vacuum. ... | 09/21/2010 |
| 7797790 | Dust collector of vacuum cleaner A vacuum cleaner is provided. The vacuum cleaner includes a main body, a suction nozzle coupled to the main body to draw in particle laden air, and a dust collecting assembly detachably coupled to the main body and including a dust collecting container that has a du... | 09/21/2010 |
| 7752707 | Bag cage having bag candy A vacuum cleaner includes a housing, a suction generator carried by the housing, a bag compartment and a bag cage. The bag compartment is defined by a bag compartment wall including an airflow inlet and an airflow outlet. The bag cage is received in the bag compartm... | 07/13/2010 |
| 7735187 | Bag cage having bag caddy A vacuum cleaner includes a housing, a suction generator carried by the housing, a bag compartment and a bag cage. The bag compartment is defined by a bag compartment wall including an airflow inlet and an airflow outlet. The bag cage is received in the bag compartm... | 06/15/2010 |
| 7721385 | Filter housing for a domestic appliance A filter housing includes an inlet for receiving an airflow, a cavity for receiving a filter and an airflow passage between the inlet and the cavity. At least one vane, positioned in the airflow passage, partitions the airflow passage into a plurality of ducts. The ... | 05/25/2010 |
| 7698778 | Vacuum cleaner having a motor-fan unit and a fine filter disposed in an exhaust air stream thereof A vacuum cleaner includes a motor-fan unit and a housing part including a filter receptacle. A filter frame is slidably insertable in an insertion direction into the filter receptacle so as to be disposed in an exhaust air stream of the motor-fan unit. The filter fr... | 04/20/2010 |
| 7676884 | Vacuum cleaner equipped with bag compartment including a bag cage A vacuum cleaner includes a housing, a suction generator carried by the housing, a bag compartment and a bag cage. The bag compartment is defined by a bag compartment wall including an airflow inlet and an airflow outlet. The bag cage is received in the bag compartm... | 03/16/2010 |
| 7617566 | System and method for particle collection A system for enabling the collection of dust and particle samples from a surface or sampling environment using an air suction device such as a vacuum cleaner. The system includes a nozzle incorporating a filter trap for collecting the particles as well as a reversib... | 11/17/2009 |
| 7610652 | Dust receptacle having ultraviolet (UV) transmission window and a vacuum cleaner having the same A dust receptacle comprising an ultraviolet transmission window and a vacuum cleaner having the same. The dust receptacle includes a receptacle body detachably mounted to a cleaner body, an ultraviolet (UV) transmission window penetratingly formed on the receptacle ... | 11/03/2009 |
| 7578026 | Vacuum cleaner The invention relates to a vacuum cleaner with a housing having a dirt chamber closable by a cover, into which a suction socket extends and in which a filter bag is insertable, with a inlet opening of the filter bag being connectable to the suction socket. In order ... | 08/25/2009 |
| 7552506 | Filter assembly for vacuum cleaner A filter assembly for a vacuum cleaner is provided. The filter assembly includes a filter case and a primary filter attached to an outside of the filter case. The primary filter filters out fine dust contained in air from which relatively large dust has been separat... | 06/30/2009 |
| 7506403 | Blower/vac debris collection system with collection bag on movable wheeled cart A debris collection system for use with a portable, hand held blower/vac comprises a wheeled cart. A collection bag is releasably carried on the cart. A connecting hose releasably couples the collection bag to the fan outlet of the blower/vac to fill the collection ... | 03/24/2009 |
| 7496988 | Electric vacuum cleaner provided with a dust separation section for separating sucked dust and dust collecting section for collecting the dust A dust separation section is provided at a suction air passage between a suction opening of a vacuum cleaner main body and an intake opening of a motor fan to separate dust sucked from the suction opening with air and a dust collection section provided at the suctio... | 03/03/2009 |
| 7444712 | Vacuum cleaner A vacuum cleaner has a vacuum cleaner housing and an exchangeable filter with through opening arranged in the housing. A holding arm connected with its upper end to the vacuum cleaner housing penetrates the through opening. A fastening member is detachably connected... | 11/04/2008 |
| RE40542 | Dual filter vacuum cleaner apparatus A dual filter arrangement for a vacuum cleaner for filtering particles of dust and debris from an airflow passing through the vacuum cleaner. The dual filter comprises a coarse pre-filter having an array of pores formed therein of substantially uniform diameter and ... | 10/21/2008 |
| 7424767 | Street sweeper with litter hose Provided is a street sweeper for collecting debris from a street surface. The street sweeper includes a chassis mounted on wheels, a rotating broom for removing debris from a street surface, and a hopper for collecting the removed debris. A passageway extends betwee... | 09/16/2008 |