| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 015349000 | With receiver for dirt from rotary or moving agitator | 14 |
| 20080250600 | Suction device - In a suction device for the intake by suction and/or extraction by suction of chips or dust, comprising a lower part ( | 10-16-2008 |
| 20080276412 | 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 filter box to flow into the hopper. In one example, the hopper includes a prefilter assembly which is coupled to an inlet of the filter box during a sweeping operation and which is removed away from the filter box during a hopper dump procedure. | 11-13-2008 |
| 20080276413 | Integral Vacuum Fan Housing - A filter box for a surface maintenance machine incorporating aspects of a fan housing. In one example, a filter box for a sweeping machine is provided with an impeller fan housing beneath a cylindrical filter. Operation of the impeller fan draws air from a debris hopper, through the cylindrical filter, and through an expansion chamber defined by a scroll conduit prior to outlet to atmosphere. | 11-13-2008 |
| 20090056060 | Stick type vacuum cleaner - A stick type vacuum cleaner is provided. The stick type vacuum cleaner includes a suction port assembly and a stick unit having a first end is engaged with a first side of the suction port assembly and a second end having a handgrip. The suction port assembly includes a casing part comprising a suction port through which air and dust is drawn from the object being cleaned, a suction force generating unit formed inside the casing part to generate a suction force, a dust separating unit to separate and accommodate dust from the drawn air and dust, and a power supply unit to supply power to the suction force generating unit. The suction force generating unit is disposed between the suction port and the dust separating unit so that the drawn air and dust is passed through the suction force generating unit before being introduced into the dust separating unit. | 03-05-2009 |
| 20090165240 | VACUUM CLEANER - Disclosed herein is a vacuum cleaner. The vacuum cleaner includes a dust container having an air inlet and an air outlet, a filter inside the dust container, a case part on the filter, a dust removing part rotated inside the filter while contacting the filter, and a drive unit rotating the dust removing part. The dust removing part removes dust from the filter while being rotated by air, thereby preventing the filter from undergoing functional deterioration. | 07-02-2009 |
| 20090300873 | Surface Cleaning Apparatus - A surface cleaning apparatus comprises a debris retrieval body ( | 12-10-2009 |
| 20110277269 | Robot cleaner with improved dust collector - A robot cleaner including a suction hole to suction dust, a blower to generate a suction force to suction the dust, a dust collector to receive the dust suctioned by said suction force through the suction hole, and a rotating brush to sweep up and collect the dust into the dust collector through the suction hole by a drive force of the rotating brush. The dust collector includes a backflow preventing member movable between an open position and a closed position. The backflow preventing member is pivotably rotatable in an air suction direction by the suction force of the blower to the open position and is adapted to return to the closed position to prevent the dust in the dust collector from being discharged through the suction hole upon stoppage of the blower. | 11-17-2011 |
| 20120060321 | Bagless Dustcup - A vacuum cleaner having a housing, a suction fan, a dustcup, a cover and an inlet into the dustcup. The dustcup is removably secured to the housing, and includes a cup end wall, a sidewall extending from the cup end wall, and an open end opposite the cup end wall. The cover can be connected to the open end of the dustcup, and includes an air outlet in fluid communication with the suction fan, and a filter covering the air outlet and extending from the cover towards the cup end wall. The cup end wall includes a barrier positioned to be contacted by air flowing through the dustcup to thereby separate dirt particles from the air. | 03-15-2012 |
| 20130055524 | CLEANING DEVICE FOR CLEANING ARTIFICIAL FLOOR AREAS PROVIDED WITH FLOOR COVERING PARTICLES, ESPECIALLY FOR ARTIFICAL TURF - A cleaning device for cleaning artificial floor coverings provided with floor covering particles, such as artificial turf, comprising a sweeping device for gathering dirt particles from the floor covering, a separation device for separating the dirt particles from floor covering particles, a floor covering particle feedback device for gathering the floor covering particles separated from the dirt particles and feeding back the floor covering particles to the floor, a filter device for filtering dust particles, and a suction device which draws air from the area of the separation device through the filter device. First and second negative-pressure chambers in which negative pressure can be formed by the suction device suction are formed above and below the separation device, respectively, in fluid communication through the separation device. The first negative-pressure chamber is in fluid communication with the suction device only via the second negative-pressure chamber. | 03-07-2013 |
| 20130081224 | DEVICE FOR PURIFYING A FLUID | 04-04-2013 |
| 20130227812 | ROBOT CLEANER WITH IMPROVED DUST COLLECTOR - A robot cleaner including a suction hole to suction dust, a blower to generate a suction force to suction the dust, a dust collector to receive the dust suctioned by said suction force through the suction hole, and a rotating brush to sweep up and collect the dust into the dust collector through the suction hole by a drive force of the rotating brush. The dust collector includes a backflow preventing member movable between an open position and a closed position. The backflow preventing member is pivotably rotatable in an air suction direction by the suction force of the blower to the open position and is adapted to return to the closed position to prevent the dust in the dust collector from being discharged through the suction hole upon stoppage of the blower. | 09-05-2013 |
| 20140123433 | SWEEPING MACHINE - A sweeping machine includes a sweeping brush capable of being driven in rotation, a debris container, a suction fan and at least one filter arranged in the flow path between the sweeping brush and the suction fan, in flow communication with the suction fan via a suction conduit, in flow communication with a pressure vessel via an external air conduit and at least one external air valve and, for filter cleaning, is capable of having external air stored in the pressure vessel applied thereto. In order for the filter to be capable of being cleaned effectively with as little external air as possible and with the external air being at as low a positive pressure as possible, the external air conduit includes a hood which covers the filter on a clean side thereof and forms a first section of the suction conduit which adjoins the clean side of the filter. | 05-08-2014 |
| 20140165328 | AUTONOMOUS CLEANING MACHINE - Disclosed herein is an autonomous cleaning machine with a brush cleaning unit to clean a brush unit. The autonomous cleaning machine includes a main body, the brush unit rotatably provided on the main body, first brush cleaning members contacting the brush unit to move foreign substances wound on the brush unit in a lengthwise direction of the brush unit, and second brush cleaning members contacting the brush unit to remove the foreign substances wound on the brush unit from the brush unit. | 06-19-2014 |
| 20180020892 | SURFACE CLEANING HEAD WITH A VALVE ASSEMBLY | 01-25-2018 |
