Patents by Inventor Peter Worwag
Peter Worwag has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7941893Abstract: A vacuum cleaning tool has a housing having a connecting socket for effecting flow communication to a vacuum device of a vacuum cleaning device. The housing has a suction opening through which a working air flow enters the housing. The housing has an outlet opening through which the working air flow exits from the housing. A cleaning tool is rotatably supported in the housing. An air turbine is rotatably supported in a turbine chamber of the housing and drives the cleaning tool in rotation. A control device controls the drive power for driving the cleaning tool based on a pressure existing in the vacuum cleaning tool.Type: GrantFiled: August 30, 2007Date of Patent: May 17, 2011Assignee: Düpro AGInventor: Peter Wörwag
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Publication number: 20080053479Abstract: A vacuum cleaning tool has a housing having a connecting socket for effecting flow communication to a vacuum device of a vacuum cleaning device. The housing has a suction opening through which a working air flow enters the housing. The housing has an outlet opening through which the working air flow exits from the housing. A cleaning tool is rotatably supported in the housing. An air turbine is rotatably supported in a turbine chamber of the housing and drives the cleaning tool in rotation. A control device controls the drive power for driving the cleaning tool based on a pressure existing in the vacuum cleaning tool.Type: ApplicationFiled: August 30, 2007Publication date: March 6, 2008Applicant: DUPRO AGInventor: Peter Worwag
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Patent number: 7316050Abstract: A cleaning tool for a vacuum cleaning device has a housing and a motor arranged in the housing. A tool carrier and a rotatingly driven working tool are provided. The working tool has two ends rotatably supported in the tool carrier. The tool carrier and the working tool form a changing unit. The tool carrier is detachably secured on the housing by catch elements. A gear system is connected between the motor and the working tool, wherein the motor drives via the gear system the working tool. The gear system has a driving wheel driven by the motor and a driven wheel fixedly connected to the working tool. The tool carrier and the housing have wall sections that overlap one another and align the tool carrier relative to the housing and the driven wheel relative to the driving wheel when the changing unit is inserted into the housing.Type: GrantFiled: November 26, 2003Date of Patent: January 8, 2008Assignee: Düpro AGInventor: Peter Worwag
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Patent number: 7246410Abstract: A vacuum cleaning tool has a housing having a turbine chamber and a bottom plate. A working tool is rotatably supported in the housing. An air turbine for driving the working tool is arranged in the turbine chamber and has axial end faces defining a gap relative to the chamber sidewalls. A turbine chamber wall has a first intake window and at least one second intake window. The first intake window supplies a driving suction air stream to the peripheral turbine surface on a first side of a plane that extends through the turbine axis. The second intake window supplies a partial suction air stream to the turbine chamber that enters the turbine chamber on a second side of the plane extending through the turbine axis. The second intake window overlaps at least partially at least one gap and the partial suction air stream flows into the gap.Type: GrantFiled: December 21, 2003Date of Patent: July 24, 2007Assignee: Düpro AGInventor: Peter Worwag
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Patent number: 7246408Abstract: A cleaning tool for a vacuum cleaning device has a housing having a bottom plate with a working slot. A rotatingly driven working tool is rotatably supported in the housing and passes through the working slot to act on a surface to be cleaned. A motor is arranged in the housing and has a motor shaft. A gear system is connected between the motor and the working tool, wherein the gear system has a driving wheel driven by the motor shaft and a driven wheel fixedly connected to the working tool. The driving wheel and the driven wheel are V-belt pulleys and have a peripheral groove, respectively. The gear system further has a V-gear positioned between the driving wheel and the driven wheel, wherein the V-gear has an outer periphery that engages the peripheral grooves for establishing a driving connection between the driving wheel and the driven wheel.Type: GrantFiled: November 26, 2003Date of Patent: July 24, 2007Assignee: Düpro AGInventor: Peter Worwag
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Publication number: 20070056667Abstract: A wheel for an object to be moved on a floor surface has a hub and an outer running surface secured to the hub. The running surface is rotatable about an axis of rotation. A fiber layer of fibers is applied onto the running surface. The fiber layer forms an intermediate layer between a floor surface and the running surface when the wheel moves across the floor surface. The fiber layer is a flocking applied to the running surface.Type: ApplicationFiled: September 7, 2006Publication date: March 15, 2007Applicant: DUPRO AGInventor: Peter Worwag
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Publication number: 20060179606Abstract: A vacuum cleaning tool has a housing with a working chamber and a connecting socket for a vacuum hose. A brush roller is arranged in the working chamber. An air turbine is arranged in a turbine chamber between working chamber and connecting socket. The working chamber has a bottom with vacuum air ports through which a vacuum air flow enters the working chamber. The housing has an opening between working chamber and turbine chamber and a discharge opening between turbine chamber and connecting socket. The vacuum air flow passes from the working chamber into the turbine chamber and drives the air turbine and then passes through the discharge opening into the connecting socket. The brush roller acts through the vacuum air ports on a surface to be treated. A bushing on which the air turbine is fixedly mounted is rotatably supported on a support shaft mounted in the housing.Type: ApplicationFiled: February 10, 2006Publication date: August 17, 2006Applicant: DUPRO AGInventor: Peter Worwag
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Publication number: 20050115014Abstract: A vacuum cleaning tool for a vacuum cleaning device has a housing with a working chamber that has a bottom plate provided with a suction slot extending transversely to a working direction of the vacuum cleaning tool. The housing has a housing front wall facing in the working direction. The housing front wall has a receptacle, and an illumination element is arranged in the receptacle for illuminating a working surface of the vacuum cleaning tool. A light-permeable cover closes off the receptacle and covers the illumination element. The illumination element is a cold light lamp emitting cold light.Type: ApplicationFiled: November 15, 2004Publication date: June 2, 2005Applicant: DUPRO AGInventor: Peter Worwag
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Patent number: 6813809Abstract: A vacuum cleaning tool of a vacuum cleaning device has a housing with a turbine chamber and a working chamber. The housing has a suction slot extending transversely in the vacuum cleaning tool. A suction airflow generated by the vacuum cleaning device enters the working chamber via the suction slot. First and second flow connections between the working and turbine chambers allow the suction airflow to enter the turbine chamber. An air turbine in the turbine chamber is rotatably driven by the suction airflow and drives a cleaning tool in the working chamber. The housing has an outlet opening allowing the suction airflow to exit the turbine chamber. The first and second flow connections are located on opposite sides of an imaginary plane defined by the axis of rotation of the air turbine and a center of the outlet opening. The cross-section of one of the flow connections is adjustable.Type: GrantFiled: March 1, 2002Date of Patent: November 9, 2004Assignee: Düpro AGInventor: Peter Wörwag
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Publication number: 20040123417Abstract: A vacuum cleaning tool has a housing having a turbine chamber and a bottom plate. A working tool is rotatably supported in the housing. An air turbine for driving the working tool is arranged in the turbine chamber and has axial end faces defining a gap relative to the chamber sidewalls. A turbine chamber wall has a first intake window and at least one second intake window. The first intake window supplies a driving suction air stream to the peripheral turbine surface on a first side of a plane that extends through the turbine axis. The second intake window supplies a partial suction air stream to the turbine chamber that enters the turbine chamber on a second side of the plane extending through the turbine axis. The second intake window overlaps at least partially at least one gap and the partial suction air stream flows into the gap.Type: ApplicationFiled: December 21, 2003Publication date: July 1, 2004Applicant: DUPRO AGInventor: Peter Worwag
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Publication number: 20040103497Abstract: A cleaning tool for a vacuum cleaning device has a housing having a bottom plate with a working slot. A rotatingly driven working tool is rotatably supported in the housing and passes through the working slot to act on a surface to be cleaned. A motor is arranged in the housing and has a motor shaft. A gear system is connected between the motor and the working tool, wherein the gear system has a driving wheel driven by the motor shaft and a driven wheel fixedly connected to the working tool. The driving wheel and the driven wheel are V-belt pulleys and have a peripheral groove, respectively. The gear system further has a V-gear positioned between the driving wheel and the driven wheel, wherein the V-gear has an outer periphery that engages the peripheral grooves for establishing a driving connection between the driving wheel and the driven wheel.Type: ApplicationFiled: November 26, 2003Publication date: June 3, 2004Applicant: DUPRO AGInventor: Peter Worwag
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Publication number: 20040103496Abstract: A cleaning tool for a vacuum cleaning device has a housing and a motor arranged in the housing. A tool carrier and a rotatingly driven working tool are provided. The working tool has two ends rotatably supported in the tool carrier. The tool carrier and the working tool form a changing unit. The tool carrier is detachably secured on the housing by catch elements. A gear system is connected between the motor and the working tool, wherein the motor drives via the gear system the working tool. The gear system has a driving wheel driven by the motor and a driven wheel fixedly connected to the working tool. The tool carrier and the housing have wall sections that overlap one another and align the tool carrier relative to the housing and the driven wheel relative to the driving wheel when the changing unit is inserted into the housing.Type: ApplicationFiled: November 26, 2003Publication date: June 3, 2004Applicant: DUPRO AGInventor: Peter Worwag
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Patent number: 6615445Abstract: A vacuum cleaning tool has a housing with a brush chamber and a turbine chamber. A vacuum connector is connected to the housing remote from the brush chamber and has an outlet window. A working roller is arranged in the brush chamber and driven by an air turbine in the turbine chamber. The air turbine has an annular vane arrangement with vanes. The vacuum airflow enters the brush chamber via a suction slot, flows from the brush chamber into the turbine chamber, passes through the air turbine, and exits through the outlet window of the vacuum connector. In the flow direction of the vacuum airflow the outlet window is higher than the intake window. A connecting line between central areas of the intake and outlet windows intersects the air turbine as a secant to define a circle segment in which four to six of the vanes of the annular vane arrangement are located.Type: GrantFiled: August 30, 2001Date of Patent: September 9, 2003Assignee: Düpro AGInventor: Peter Wörwag
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Patent number: 6550099Abstract: A vacuum cleaning tool for a vacuum cleaning device has a housing having a vacuum connector connected to the vacuum cleaning device. The housing has an underside and an elongate intake opening arranged in the underside. A brush roll is arranged in the housing parallel to the elongate intake opening. A drive is arranged in the housing and drivingly coupled to the brush roll. An exchangeable vacuum shoe is detachably connected to the housing and has two wall portions extending at least approximately parallel to the brush roll. The brush roll is arranged between the two wall portions.Type: GrantFiled: January 16, 2001Date of Patent: April 22, 2003Assignee: Düpro AGInventor: Peter Wörwag
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Patent number: 6484356Abstract: A vacuum cleaning tool has a housing with a brush chamber and a turbine chamber. A vacuum connector is connected to the housing remote from the brush chamber. A brush roller is arranged in the brush chamber and an air turbine is arranged in the turbine chamber for driving the brush roller. A vacuum airflow enters the brush chamber via a suction slot, flows from the brush chamber into the turbine chamber, flows within the turbine chamber through the air turbine, and exits from the turbine chamber into the vacuum connector. The turbine chamber has an intake cross-section transverse to a flow direction of the vacuum airflow that is greater than an outlet cross-section at the turbine chamber end facing the outlet window. Intermediate cross-sections of the interior of the turbine chamber decrease in a direction toward the turbine chamber end such that the turbine chamber tapers toward the outlet cross-section.Type: GrantFiled: August 30, 2001Date of Patent: November 26, 2002Assignee: Düpro AGInventor: Peter Wörwag
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Patent number: 6477735Abstract: A vacuum cleaning tool has a housing with a partition dividing an interior of the housing into a brush chamber and a turbine chamber. A vacuum connector is connected to the housing remote from the brush chamber. A working roller is arranged in the brush chamber. An air turbine is arranged in the turbine chamber and drives in rotation the working roller. A vacuum air flow enters the brush chamber, flows from the brush chamber through an intake window into the turbine chamber, flows within the turbine chamber through the air turbine, and exits from the turbine chamber to the vacuum connector. The turbine chamber has a chamber bottom with a ramp ascending toward the outlet window in the area where the vacuum airflow exits from the turbine chamber. The ramp is through-shaped and has a groove extending in the flow direction of the vacuum airflow.Type: GrantFiled: August 30, 2001Date of Patent: November 12, 2002Assignee: Düpro AGInventor: Peter Wörwag
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Publication number: 20020124334Abstract: A cleaning device for smooth floor surfaces has a housing having a working chamber and a drive chamber. First and second cleaning rollers are rotatably supported in the working chamber and extend transversely to a working direction of the cleaning device substantially across an entire width of the cleaning device. A drive is arranged in the drive chamber and drives the first and second cleaning rollers about a horizontal axis of rotation. The first and second cleaning rollers are height-adjustably arranged in the housing such that an adjusting device acts on the first and second cleaning rollers and moves them into a working position or into a parking position, respectively. The first and second cleaning rollers have a mantle surface projecting in the working position downwardly past a bottom plate of the housing to act on a floor surface.Type: ApplicationFiled: March 7, 2002Publication date: September 12, 2002Applicant: DUPRO AGInventor: Peter Worwag
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Publication number: 20020120999Abstract: A vacuum cleaning tool of a vacuum cleaning device has a housing with a turbine chamber and a working chamber. The housing has a suction slot extending transversely in the vacuum cleaning tool. A suction airflow generated by the vacuum cleaning device enters the working chamber via the suction slot. First and second flow connections between the working and turbine chambers allow the suction airflow to enter the turbine chamber. An air turbine in the turbine chamber is rotatably driven by the suction airflow and drives a cleaning tool in the working chamber. The housing has an outlet opening allowing the suction airflow to exit the turbine chamber. The first and second flow connections are located on opposite sides of an imaginary plane defined by the axis of rotation of the air turbine and a center of the outlet opening. The cross-section of one of the flow connections is adjustable.Type: ApplicationFiled: March 1, 2002Publication date: September 5, 2002Applicant: DUPRO AGInventor: Peter Worwag
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Patent number: D524002Type: GrantFiled: August 14, 2003Date of Patent: June 27, 2006Assignee: Lux International AGInventor: Peter Wörwag
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Patent number: D457696Type: GrantFiled: February 2, 2001Date of Patent: May 21, 2002Assignee: Düpro AGInventor: Peter Wörwag