Selective Patents (Class 15/365)
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Patent number: 11896191Abstract: The present disclosure provides a collection device capable of collecting a virus or the like effectively. The collection device according to the present disclosure is an autonomous collection device (2) for collecting an object having an analyte and moisture from a floor surface. The autonomous collection device (2) comprises a drying part (18) for drying the object, a suction opening (36) for suctioning the object dried by the drying part, and a dust container (12) for storing the object suctioned from the suction opening.Type: GrantFiled: February 7, 2020Date of Patent: February 13, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hiroshi Nakayama, Mikiya Nakata
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Patent number: 9713408Abstract: A vacuum cleaner comprises a cleaning head having a suction nozzle adapted to be moved along a surface to be cleaned, and a hair collection assembly carried by the cleaning head and having a hair collection element adapted to collect hair from the surface to be cleaned as the cleaning head moves along the surface to be cleaned.Type: GrantFiled: June 30, 2015Date of Patent: July 25, 2017Assignee: Bissell Homecare, Inc.Inventors: George Moyher, Jr., Steve Butkiewicz
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Patent number: 9585531Abstract: A nozzle assembly usable with an upright vacuum cleaner, comprising: a nozzle assembly body; a drum brush unit disposed in the nozzle assembly body, the drum brush unit having a drum brush disposed to move dirt or dust adhered to a surface to be cleaned while coming in rotational contact therewith; a subsidiary brush unit disposed in front of the drum brush unit, and the subsidiary brush unit having a subsidiary brush to preliminarily move the dust or dirt adhered to the surface to be cleaned before the drum brush moves the dirt or dust adhered to the surface to be cleaned; and a locking unit disposed to the drum brush unit to selectively fix the subsidiary brush unit to the drum brush unit, wherein the subsidiary brush unit is rotatably connected to the drum brush unit to selectively maintain a contact state or a non-contact state to the surface to be cleaned, and, when the subsidiary brush unit maintains the contact state to the surface to be cleaned, the locking unit fixes the subsidiary brush unit to theType: GrantFiled: February 12, 2014Date of Patent: March 7, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dong Hun Yoo, Yun Hee Park
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Patent number: 9486121Abstract: A vacuum cleaner comprises a cleaning head having a suction nozzle adapted to be moved along a surface to be cleaned, and a hair collection assembly provided on the cleaning head and having a hair collection element adapted to collect hair from the surface to be cleaned as the cleaning head moves along the surface to be cleaned.Type: GrantFiled: January 5, 2015Date of Patent: November 8, 2016Assignee: BISSELL Homecare, Inc.Inventors: Gary A. Kasper, Steve Butkiewicz
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Patent number: 8387206Abstract: A surface treating head includes a main body; a brush unit; and a drive mechanism for moving the brush unit relative to the main body between a stowed position and a deployed position. The drive mechanism includes a pressure chamber and a valve unit for varying the pressure within the chamber. The valve unit includes a housing, a valve located within the housing and, disposed on the housing, an actuator moveable relative to the housing through engagement with a surface to be treated for operating the valve and at least one surface engaging member extending downwardly beyond the actuator. The housing is moveable relative to the main body to maintain the surface engaging member in contact with the surface to be treated.Type: GrantFiled: July 6, 2010Date of Patent: March 5, 2013Assignee: Dyson Technology LimitedInventors: Spencer James Robert Arthey, Stephen Robert Dimbylow, Alistair William Skuse
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Patent number: 8261407Abstract: A vacuum cleaner accessory tool configured for use with a vacuum cleaner. The vacuum cleaner is operable to draw air through a suction hose to clean a surface. The accessory tool includes a housing that defines a chamber, and the housing includes an exterior surface and an interior surface. An outlet conduit is in fluid communication with the chamber, and the outlet conduit is configured to couple the accessory tool to the suction hose. A suction inlet aperture extends through the housing to provide fluid communication into the chamber. The accessory tool further includes a brush assembly extending from the exterior surface of the housing, and the brush assembly includes an auxiliary aperture to provide fluid communication into the chamber.Type: GrantFiled: September 1, 2009Date of Patent: September 11, 2012Assignee: Techtronic Floor Care Technology LimitedInventors: Robert F. Bozzelli, Chris Charlton, Andy Chick, Matt Doerfler, Markus Allemann
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Patent number: 8196258Abstract: A brush assembly for a vacuum cleaner includes a brush body having a suction inlet; a main brush which is rotatably coupled to the brush body through the suction inlet to face a surface being cleaned; and a secondary brush which is rotatably mounted on the brush body to rotate between at least two positions including a first position, in which the secondary brush contacts the surface being cleaned, and a second position, in which the secondary brush does not contact the surface being cleaned.Type: GrantFiled: July 31, 2008Date of Patent: June 12, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Ji-ho Seo
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Patent number: 8122562Abstract: An surface cleaning implement comprises a recovery tank and a suction nozzle in fluid communication with a recovery tank, a fan/turbine assembly including a turbine-driven suction fan for generating suction at the suction nozzle, which draws liquid and air into and through the accessory tool. A fluid dispensing assembly is disclosed for storing and distributing fluid to the surface to the cleaned. An agitator assembly can be moved from a use to a non-use orientation to alternately scrub the surface to the cleaned and to extract fluid from the surface to be cleaned.Type: GrantFiled: December 19, 2008Date of Patent: February 28, 2012Assignee: BISSELL Homecare, Inc.Inventor: Alan J. Krebs
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Patent number: 8117714Abstract: A vacuum cleaner comprises a hair collection assembly having a hair collection element adapted to collection hair from a surface. The hair collection assembly can be mounted to the cleaning head of the vacuum cleaner for movement between a use position in which the hair collection element is in contact with the surface and a second position in which the hair collection element in spaced from the surface. The hair collection element can further be configured to collect hair from the surface when the cleaning head is moved in a first direction and to not collect hair from the surface when the cleaning head is moved in a second direction. A method of removing hair from a surface is also described.Type: GrantFiled: March 8, 2007Date of Patent: February 21, 2012Assignee: BISSELL Homecare, Inc.Inventors: Tom Minh Nguyen, Steven J. Butkiewicz, Alan J. Krebs, George C. Moyher, Jr., Gary A. Kasper, Timothy S. Parker, Daniel M. Heidenga, Brandon Graham
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Patent number: 7998277Abstract: A method of removing hair from a surface laden with hair comprising moving a hair collection element along the surface in a first direction to collect hair, depositing the collected hair at a first location, gliding the hair collection element along the surface in a second direction away from the first location and removing the collection hair from the first location.Type: GrantFiled: December 18, 2008Date of Patent: August 16, 2011Assignee: BISSELL Homecare, Inc.Inventor: Tom Minh Nguyen
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Patent number: 7958595Abstract: A cleaning apparatus having a cleaning system including at least one downwardly directed spray nozzle is supported by the chassis proximal the chassis forward end and in fluid communication with at least one cleaning solution tank. The at least one spray nozzle sprays cleaning solution from the tank onto the floor. At least one ground engaging agitation brush is disposed rearwardly of the at least one spray nozzle for agitating the cleaning solution sprayed onto the floor. At least one vacuum shoe is supported by the chassis rearwardly of the at least one agitation brush, and in fluid communication with the at least one recovery tank. Cleaning solution drawn into the vacuum shoe is deposited into the at least one recovery tank. In one embodiment, the apparatus is drivable. In another embodiment, the apparatus includes a second cleaning system including a vacuum squeegee.Type: GrantFiled: March 4, 2008Date of Patent: June 14, 2011Assignee: Nilfisk-Advance, Inc.Inventor: Sean K. Goff
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Patent number: 7908705Abstract: The invention relates to a bare floor cleaner capable of wet pickup through a first nozzle opening with the aid of a squeegee, wet scrubbing with an agitator, and dry pickup through a second nozzle opening. The bare floor cleaner comprises a dual-path nozzle assembly having a wet suction path in communication with the first nozzle opening and a dry suction path in communication with the second nozzle opening. A diverter valve selectively controls fluid communication between a suction source and one of the first and second nozzle openings for conversion between wet and dry modes. The bare floor cleaner further comprises a single actuator that controls the positions of the agitator and of the diverter valve. As a result, the cleaning mode of the bare floor cleaner can be controlled with a single switch that is preferably located on the handle assembly for convenient access by a user.Type: GrantFiled: December 18, 2008Date of Patent: March 22, 2011Assignee: BISSELL Homecare, Inc.Inventor: Gabriel S. VanderBaan
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Patent number: 7712183Abstract: An electric vacuum cleaner (1) of the invention is adapted for wipe off cleaning using a sheet wound about a rotary brush (25) incorporated in a suction device (10). In order to wind a sheet (50) around a periphery of the rotary brush (25), a brush motor (44) rotates the rotary brush (25) in a predetermined direction at a predetermined rotational speed. At the same time, suction force of an electric blower fan (42) is set to the lowest level. This achieves the following advantage in a case where a wet sheet is used as the sheet (50). During sheet winding, water and alcohol released from the wet sheet (50) can be prevented from being scattered on a surface (100) to be cleaned. Further, the released water and alcohol do not adversely affect the electric blower fan (42).Type: GrantFiled: February 8, 2008Date of Patent: May 11, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Kouichi Nakai, Sadaki Kodera, Akihiro Fukumoto, Chizuyo Matsumoto, Akihiro Morita, Hirotaka Shikano, Hideya Tsuchida, Yoshiaki Matsumoto, Eiji Mukumoto, Shigeki Inui
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Patent number: 7631395Abstract: The present disclosure relates to a suction nozzle for a vacuum cleaner, which includes a nozzle body having a contaminants suction port formed on a bottom surface thereof, and a fur-removing member having a fur-removing body rotatably disposed at a side of the contaminants suction port on the nozzle body, a fur-removing portion formed in a plurality of pins vertically to the fur-removing body, and a plurality of rotation cams, wherein when the nozzle body moves in a first direction, the plurality of rotation cams forces the fur-removing body to rotate so that a leading end of the fur-removing portion is spaced apart from a surface to be cleaned.Type: GrantFiled: November 8, 2007Date of Patent: December 15, 2009Assignee: Samsung Gwangju Electronics Co., Ltd.Inventor: Jang-keun Oh
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Patent number: 7549190Abstract: A nozzle assembly of a vacuum cleaner is disclosed. The nozzle assembly includes a nozzle assembly body having an air inlet and an air outlet, a drum brush unit disposed in the nozzle assembly body in the vicinity of the air inlet, and having a drum brush disposed to brush away dirt or dust adhered to a surface to be cleaned while coming in rotation contact therewith, and a movable brush unit disposed in at least one of the front and the rear of the air inlet on an undersurface of the nozzle assembly body to pivot in an opposite direction to a moving direction of the nozzle assembly body thus to change a contacting angle to the surface to be cleaned in the range of a predetermined angle and then to brush away dirt or dust adhered to the surface to be cleaned, in moving of the nozzle assembly body.Type: GrantFiled: October 18, 2007Date of Patent: June 23, 2009Assignee: Samsung Gwangju Electronics Co., Ltd.Inventors: Jang-Keun Oh, Dong-Houn Yang, Hyoun-Soo Kim
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Patent number: 6709531Abstract: In this disclosure, air flow is formed above chemical liquid film and a move of the chemical liquid is generated by making the air flow into a contact with the surface of chemical liquid. Further, a negative pressure is generated in a space between a processing object substrate and a plate by rotating the plate. Consequently, uniformity of processing of chemical liquid is improved, so that liquid removing step can be carried out effectively. As a result, yield rate of chemical liquid treatment can be improved.Type: GrantFiled: March 26, 2003Date of Patent: March 23, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Shinichi Ito, Riichiro Takahashi, Tatsuhiko Ema, Katsuya Okamura
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Patent number: 6579382Abstract: In this disclosure, air flow is formed above chemical liquid film and a move of the chemical liquid is generated by making the air flow into a contact with the surface of chemical liquid. Further, a negative pressure is generated in a space between a processing object substrate and a plate by rotating the plate. Consequently, uniformity of processing of chemical liquid is improved, so that liquid removing step can be carried out effectively. As a result, yield rate of chemical liquid treatment can be improved.Type: GrantFiled: February 16, 2001Date of Patent: June 17, 2003Assignee: Kabushiki Kaisha ToshibaInventor: Shinichi Ito
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Patent number: 6530118Abstract: A sub-suction pipe assembly for a vacuum cleaner includes an air suction pipe connected to a vacuum cleaner body, a sub-suction pipe connected to the air suction pipe and movable along the air suction pipe between a first position and a second position. The sub-suction pipe has a brush attached to an end thereof, a suction extension pipe detachably connected to the end of the air suction pipe, and a lock mechanism for securing the suction extension pipe to the air suction pipe. The sub-section pipe remains coupled to the end of the air suction pipe when the suction extension pipe is connected to the air suction pipe.Type: GrantFiled: April 12, 2001Date of Patent: March 11, 2003Assignee: Samsung Kwangju Electronics Co., Ltd.Inventor: Jang-keun Oh
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Patent number: 6467122Abstract: An upright deep cleaner including a base housing pivotally connected to an upright handle, the upright handle carrying a liquid supply tank and the base housing including a recovery tank. The liquid supply tank includes an internal siphon tube for ensuring liquid flow to a feed valve when the upright handle is in the inclined position. The base housing includes a suction nozzle adjacent a spray bar, and removable floating brush for contacting a surface being cleaned, the brush being interchangeable with a bare floor tool including a sponge, brush, and squeegee. The recovery tank includes an internal baffle for preventing foaming of solution and a tank vent housing including a sponge-type filter to prevent spray from exiting the recovery tank.Type: GrantFiled: January 5, 2001Date of Patent: October 22, 2002Assignee: Bissell Homecare, Inc.Inventors: Kenneth M. Lenkiewicz, Alan J. Krebs
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Patent number: 6421874Abstract: A vacuum cleaner includes a housing having a handle pivotally mounted to a nozzle assembly. An agitator is received in an agitator cavity formed in the nozzle assembly. A suction fan and suction fan drive motor are carried on the housing. An edge cleaning brush is pivotally mounted to the nozzle assembly along a lateral edge of the nozzle assembly adjacent the agitator cavity. The brush includes a body having a series of apertures for receiving cleaning bristles and a pair of opposed mounting lugs. The edge cleaning brush is received in a recess with the mounting lugs held in a pair of opposed mounting openings in the nozzle assembly.Type: GrantFiled: May 18, 2000Date of Patent: July 23, 2002Assignee: Matsushita Electric Corporation of AmericaInventor: Michael J. McCormick
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Patent number: 6101671Abstract: The present invention relates to a suction cleaning device which provides liquid dispensing, scrubbing, squeegeeing, and suction drying in a single, compact, self contained device. The suction cleaning device includes a cleaning device housing, a handle connected to the housing, an absorbent cleaning member mounted on the housing and movable between an extended and a retracted position, and a pair of squeegee blades. The squeegee blades are mounted in a squeegee tray, and at least one of the squeegee blades is movable between an extended and a retracted position in response to changes in the relative angle between the housing and the surface being cleaned. The movable squeegee blade is spring-biased into the extended position by one or more springs such as leaf springs. The device includes a suction system which draws the water from the floor surface which has been cleaned into a tank mounted on the housing which collects the liquid from the floor surface.Type: GrantFiled: January 9, 1999Date of Patent: August 15, 2000Assignee: Royal Appliance Mfg. Co.Inventors: Michael F. Wright, Laurie M. Shumaker, Craig M. Saunders, Joseph Lazzara, Mark Cipolla, Glenn E. Specht, Richard C. Farone, Jeffrey M. Kalman, Terry L. Zahuranec, Gary J. Dieterich, David J. Shimko
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Patent number: 5983448Abstract: The present invention relates to a suction cleaning device which provides liquid dispensing, scrubbing, squeegeeing, and suction drying in a single, compact, self contained device. The suction cleaning device includes a cleaning device housing, a handle connected to the housing, an absorbent cleaning member mounted on the housing and movable between an extended and a retracted position, and a pair of squeegee blades. The squeegee blades are mounted in a squeegee tray, and at least one of the squeegee blades is movable between an extended and a retracted position in response to changes in the relative angle between the housing and the surface being cleaned. The movable squeegee blade is spring-biased into the extended position by one or more springs such as leaf springs. The device includes a suction system which draws the water from the floor surface which has been cleaned into a tank mounted on the housing which collects the liquid from the floor surface.Type: GrantFiled: May 22, 1998Date of Patent: November 16, 1999Assignee: Royal Appliance Mfg. Co.Inventors: Michael F. Wright, Laurie M. Shumaker, Craig M. Saunders, Joseph Lazarra, Mark Cipolla, Glenn E. Specht, Richard C. Farone, Jeffrey M. Kalman, Terry L. Zahuranec, Gary J. Dieterich
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Patent number: 5678279Abstract: A floor care appliance, in particular a vacuum cleaning appliance, for example a vacuum cleaner (1) or a floor polisher, with downwardly directed bristles (11) arranged preferably around its outer periphery, the bristles (11) being fixed in a mounting strip (13), and the mounting strip (13) being positively held in a downwardly open receiving groove portion (14) of sidewalls (16, 19) inwardly extending projections (17, 24) being disposed on the sidewalls (16, 19). In order to enable force-free installation and removal of the mounting strip fitted with the bristles, the projections (24) of one sidewall (19) are displaceable into a release disposition for the mounting strip (13).Type: GrantFiled: July 21, 1995Date of Patent: October 21, 1997Assignee: Vorwerk & Co. Interholding GmbHInventors: Wieland Guhne, Gentile Marafante, Mario Tecchiati, Thomas Braun
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Patent number: 5603139Abstract: A manual apparatus for cleaning by spreading cleaning liquid and for sucking up the used liquid, comprises a cleaning head (2) provided with a supply orifice for cleaning liquid, structure (11) for spreading the liquid over the surface to be cleaned, and a squeegee (5) provided with at least one suction opening (8) for the used liquid. A used liquid reservoir (19-20), as well as a cleaning liquid reservoir (25); and channels (9, 12) connect the used liquid reservoir to the suction opening (8) carried by the cleaning head (2) on the one hand and the cleaning liquid reservoir to the supply opening of the cleaning head (2) on the other hand. A suction device (33) is provided, as well as controls (39) for the supply of cleaning liquid and for the suction (37) of used liquid. There is also provided a gripping handle (4).Type: GrantFiled: December 28, 1994Date of Patent: February 18, 1997Assignee: FamulusInventor: Jean Alazet
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Patent number: 5553349Abstract: A vacuum cleaner nozzle having a first nozzle part (11) which has brush elements (23) or the like facing the floor and a second nozzle part (25) which is movably arranged with respect to the first part (11) and which has at least one suction opening (27) through which air flows to an outlet tube (13) connected to the nozzle. The second nozzle part (25) is supported by the first nozzle part (11) by means of a resilient element (31). The resilient element maintains the second part (25) above the floor when the nozzle is moved on a hard surface and allows the second part (25) to move toward the floor when the nozzle is moved on a soft surface, such as a soft carpet.Type: GrantFiled: February 6, 1995Date of Patent: September 10, 1996Assignee: Aktiebolaget ElectroluxInventors: Lars G. Kilstrom, Nils T. Lindquist, Rolf G. Sjoberg
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Patent number: 5497530Abstract: In order to reduce the energy consumption of the suction unit, on the one hand, and to improve the cleaning effect, on the other hand, of a wiper device for hard surfaces, in particular a window wiper, comprising a slit-shaped suction nozzle, on which a flexible wiper lip is arranged, which protrudes forwardly beyond the suction nozzle, it is suggested that the wiper lip be held on a wall of the suction nozzle and drawn against the opposite wall of the suction nozzle under the influence of a suction stream in the suction nozzle and thereby close the suction nozzle.Type: GrantFiled: March 25, 1994Date of Patent: March 12, 1996Assignee: Alfred Karcher GmbH & Co.Inventors: Roland Kamm, Eberbard Veit, Josef Schneider, Antonio De Filippo, Donald W. Murray, Michael C. Story, Carl S. Lammons
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Patent number: 5477587Abstract: A vacuum power head is provided which has a bare floor feature. A vacuum cleaner head assembly defines a vacuum chamber which contains a power driven rotary brush. Located outside of the vacuum chamber adjacent the rotary brush is a generally U-shaped trailing brush. The trailing brush cooperates with a height adjustment mechanism which is movable between a deep carpet position and a bare floor position. As the height adjustment mechanism of the head assembly is moved toward the bare floor position, the trailing brush is automatically moved to an extended position into engagement with the floor. When the height adjustment mechanism is moved from the bare floor position, a biasing means biases the trailing brush toward a retracted position within the head assembly. An actuator cooperates with the height adjustment mechanism to automatically move the trailing brush between the retracted position and the extended position in response to movement of the height adjustment mechanism.Type: GrantFiled: December 30, 1993Date of Patent: December 26, 1995Assignee: Ryobi Motor Products Corp.Inventors: William K. Glenn, III, Donald W. Carnes, James F. Barnes, Jr.
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Patent number: 5317784Abstract: A vacuum power head is provided which has a bare floor feature. A vacuum cleaner head assembly defines a vacuum chamber which contains a power driven rotary brush. Located outside of the vacuum chamber adjacent the rotary brush is a generally U-shaped trailing brush. The trailing brush cooperates with a height adjustment mechanism which is movable between a deep carpet position and a bare floor position. As the height adjustment mechanism of the head assembly is moved toward the bare floor position, the trailing brush is automatically moved to an extended position into engagement with the floor. When the height adjustment mechanism is moved from the bare floor position, a spring biases the trailing brush toward a retracted position within the head assembly. An actuator cooperates with the height adjustment mechanism to automatically move the trailing brush between the retracted position and the extended position in response to movement of the height adjustment mechanism.Type: GrantFiled: August 10, 1992Date of Patent: June 7, 1994Assignee: Ryobi Motor Products Corp.Inventors: William K. Glenn, III, Donald W. Carnes, James F. Barnes, Jr.
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Patent number: 4897894Abstract: A vacuum cleaner nozzle comprises a body (10) having a suction passageway (11) extending therethrough, both ends of said passageway being adapted to receive a suction conduit (20). One end of the suction passageway is surrounded by a dust-brush (12) and two rotatable wing members (13) are provided at the other end. Each of the wing members comprises a resilient means (15) provided with a fiber picking material (16).Type: GrantFiled: September 17, 1987Date of Patent: February 6, 1990Assignee: Aktiebolaget ElectroluxInventor: Stefan M. Fahlen
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Patent number: 4498214Abstract: A carpet cleaning apparatus is disclosed which includes a new and improved auxiliary cleaning device arrangement incorporated in a conventional vacuum cleaner. The auxiliary cleaning device is movable into a carpet engaging position for frictionally engaging a carpet surface and simultaneously distributing cleaning material thereon which emulsify, rub, and thereby cause release of dirt, dust and other foreign particles from carpet fibers and allow their removal and collection by agitator and suction cleaning elements of the apparatus. A retraction means is provided for automatically retracting the auxiliary cleaning device in response to handle assembly movement to a storage position, and a retaining means is provided to lock the device in the retracted position. The retaining means selectively either permits movement of the device to a carpet engaging position or maintains the device in a retracted position independently of subsequent handle assembly movement.Type: GrantFiled: April 16, 1984Date of Patent: February 12, 1985Assignee: The Hoover CompanyInventor: Berton R. Oxel
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Patent number: 4447931Abstract: A nozzle for a vacuum cleaner which is provided with a suction conduit for attachment to the vacuum cleaner housing. The nozzle has two working members alternately in contact with the work surface. Either of these working members can be alternately placed into operative position by means of a servo mechanism in the form of an actuating member that is movable between two positions.Type: GrantFiled: December 6, 1982Date of Patent: May 15, 1984Assignee: Aktiebolaget ElectroluxInventor: Lennart S. A. Lindqvist
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Patent number: 4446595Abstract: An upright vacuum cleaner includes a rotary brush 12 disposed at a suction port in a floor nozzle 4 and capable of being rotated or stopped by shifting a motor-driven belt toward a drive pulley 17 or an idle pulley 18. The upright vacuum cleaner can conveniently be used for cleaning flat noncarpeted floors as well as carpeted floors.Type: GrantFiled: December 2, 1981Date of Patent: May 8, 1984Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Seiichi Nakada, Hiroshi Ohno, Tsuneo Nishijima, Hiroshi Kawakami
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Patent number: 4349935Abstract: A rug and carpet cleaning apparatus of the type in which a housing is shifted along the floor and is connected to a suction chamber while having rotary brush, carpet-shampoo, massager, and like rotary units which are selectively to act upon the carpet depending upon the function or operation to be carried out. According to the invention, at least two such units are provided on opposite sides of the fulcrum or pivot of a rocker or teeter which is controlled, e.g. by a lever and cable arrangement, to selectively bring one or the other unit into action depending upon the tilt imparted to the rocker. Both units can be continuously coupled to the drive motor which can also be mounted on the rocker.Type: GrantFiled: July 2, 1980Date of Patent: September 21, 1982Inventor: Leopold Knestele
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Patent number: 4139923Abstract: A suction attachment for a vacuum cleaner has a housing component and a brush component which is accommodated within the housing component. Two mounting members mount the brush component in the housing component for displacement between a retracted position in which the brushes of the brush component are received within the housing component, and an extended position in which the brushes extend to the exterior of the housing component and into contact with a surface to be vacuum cleaned. The mounting components are interconnected by connecting members for synchronous pivoting about spaced pivot axes. Each mounting member is pivotally mounted on the brush component and has a support portion which engages the housing component.Type: GrantFiled: March 22, 1977Date of Patent: February 20, 1979Assignee: Vorwerk & Co. Interholding GmbHInventor: Eberhard Rother