Patents by Inventor Stefan Hess

Stefan Hess 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).

  • Publication number: 20210113042
    Abstract: A wet and dry vacuum cleaner having a vacuum cleaner head, having a dirt container and having an inlet fitting which is designed for the connection of a suction hose, wherein the inlet fitting is connected in terms of flow to an inlet connector, which is situated in the wet and dry vacuum cleaner, of the wet and dry vacuum cleaner such that dirt particles that are drawn in can pass via the inlet connector into the dirt container, wherein the inlet connector is designed as a diffuser with horizontal outflow. Furthermore, the inlet connector of the wet and dry vacuum cleaner may have a Y shape in the sense that the inlet connector comprises one inflow opening for the suction flow and two outlet openings.
    Type: Application
    Filed: March 21, 2019
    Publication date: April 22, 2021
    Inventors: Xaver HANSLMEIER, Svenja MÜLLER, Mihael GENC, Wolfgang RICHTER, Stefan HESS
  • Patent number: 10548450
    Abstract: A suction device, including a suction unit, a suction line arrangement that is fluidically connected to the suction unit, a fluid supplying arrangement, a discharge arrangement for fluid, which is fluidically connected to the fluid supplying arrangement, and a guide element that is couplable to the discharge arrangement and the suction line arrangement and that guides fluid from the discharge arrangement into the suction line arrangement, for cleaning the suction line arrangement.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: February 4, 2020
    Assignee: Alfred Kärcher SE & Co. KG
    Inventors: Stefan Hess, Daniel Eckstein, Guenther Holzwarth, Juergen Steinbach
  • Publication number: 20160157693
    Abstract: A steam device is provided, including a clean water supplying arrangement, a steam generator which is fluidically connected to the clean water supplying arrangement, a cleaning agent supplying arrangement, a mixing arrangement for clean water and cleaning agent that is fluidically connected to the clean water supplying arrangement and the cleaning agent supplying arrangement, a discharge arrangement for fluid and a control arrangement by which operating modes of the steam device are settable, wherein, by means of the discharge arrangement, steam is dischargeable in a steam mode and a mixture of clean water and cleaning agent is dischargeable in a cleaning agent mode, and wherein the control arrangement has a rinsing unit which, once the cleaning agent mode is at an end, operates a rinsing mode in which the discharge arrangement is rinsed with clean water.
    Type: Application
    Filed: December 29, 2015
    Publication date: June 9, 2016
    Inventors: Stefan Hess, Daniel Eckstein, Guenther Holzwarth, Juergen Steinbach
  • Publication number: 20160106288
    Abstract: A suction device, including a suction unit, a suction line arrangement that is fluidically connected to the suction unit, a fluid supplying arrangement, a discharge arrangement for fluid, which is fluidically connected to the fluid supplying arrangement, and a guide element that is couplable to the discharge arrangement and the suction line arrangement and that guides fluid from the discharge arrangement into the suction line arrangement, for cleaning the suction line arrangement.
    Type: Application
    Filed: December 30, 2015
    Publication date: April 21, 2016
    Inventors: Stefan Hess, Daniel Eckstein, Guenther Holzwarth, Juergen Steinbach
  • Patent number: 8993796
    Abstract: The present invention relates to a process for the separation of vinyl acetate from a gas mixture formed by the reaction of ethylene with acetic acid and oxygen in the gas phase over catalysts comprising palladium or palladium compounds.
    Type: Grant
    Filed: November 28, 2009
    Date of Patent: March 31, 2015
    Assignee: Celanese International Corporation
    Inventors: Bernd Rinne, Stefan Hess, Ali Hotaman, Michael J. Bayer, Berthold Nuber
  • Patent number: 8708356
    Abstract: Pivot bearing for a wheel suspension, in particular for a front axle of a motor vehicle, containing a wheel bearing receiver, a steering arm, a spring strut receiver with a damper clamping and a carrier rib, wherein the damper clamping of the spring strut receiver faces the vehicle outside and the pivot bearing has an opening in the region between the wheel bearing receiver and the damper clamping.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: April 29, 2014
    Assignee: Georg Fischer GmbH
    Inventors: Thomas Rohde, Stefan Hess, Dominik Mahnig
  • Patent number: 8585299
    Abstract: A bearing arrangement is provided having a shaft (1) with a bearing journal (2, 3), and a needle bearing (9) which is arranged thereon and has a cage (16) and needle rollers (11) accommodated in the latter. The bearing journal is provided with a hardened and precision-machined inner raceway (10) for the needle rollers and steps back radially in relation to axial shoulders (12, 13) of adjacent shaft sections (4, 5, 6, 7), and the axial shoulders serve as run-on surfaces for the axial end sides (14, 15) of the cage fitted between the axial shoulders. In this case, relief grooves (17, 18) are provided, with the relief grooves extending on both sides of the inner raceway and each being dimensioned in such a manner that, over the entire circumferential region of the axial shoulders, the axial distance (D) thereof from each other is significantly larger than the inner raceway width (B1) existing therebetween.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: November 19, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Stefan Hess, Peter Solfrank, Patrick Ullmann, Alexander Kern
  • Patent number: 8490241
    Abstract: The invention relates to an adapter device for arranging a container on the housing of a portable cleaning appliance. The adapter device comprises an adapter plate which is adapted to be fitted on the cover surface of the housing and has on its top side a placement surface for placement of the container, and a locking device for releasably locking the adapter plate to the housing of the cleaning appliance without a tool. The invention also relates to a cleaning apparatus with a cleaning appliance and such an adapter device.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: July 23, 2013
    Assignee: Alfred Kaercher GmbH & Co. KG
    Inventors: Dirk Ricklefsen, Stefan Hess, Maic Hensel
  • Publication number: 20120180250
    Abstract: The invention relates to an adapter device for arranging a container on the housing of a portable cleaning appliance. The adapter device comprises an adapter plate which is adapted to be fitted on the cover surface of the housing and has on its top side a placement surface for placement of the container, and a locking device for releasably locking the adapter plate to the housing of the cleaning appliance without a tool. The invention also relates to a cleaning apparatus with a cleaning appliance and such an adapter device.
    Type: Application
    Filed: January 4, 2012
    Publication date: July 19, 2012
    Applicant: Alfred Kaercher GmbH & Co. KG
    Inventors: Dirk Ricklefsen, Stefan Hess, Maic Hensel
  • Patent number: 8210018
    Abstract: A method of making a compensation shaft (1) out of a drop-forged shaft blank (11) is provided. The compensation shaft includes a shaft section (5) with a base body (16) and a rib (15) with a height H starting from the base body. The method includes separating the forging ridges (14) formed in the die (9, 10) by trimming the forged shaft blank into a shape close to the final contour of the base body at trimming points, with the distance S2 between these trimming points being substantially smaller than the distance S1 between the forging ridges prior to separation.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: July 3, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Solfrank, Stefan Hess, Patrick Ullmann, Alexander Kern
  • Publication number: 20120136170
    Abstract: The present invention relates to a process for the separation of vinyl acetate from a gas mixture formed by the reaction of ethylene with acetic acid and oxygen in the gas phase over catalysts comprising palladium or palladium compounds.
    Type: Application
    Filed: November 28, 2009
    Publication date: May 31, 2012
    Applicant: CELANESE CHEMICALS EUROPE GMBH
    Inventors: Bernd Rinne, Stefan Hess, Ali Hotaman, Michael J. Bayer, Berthold Nuber
  • Patent number: 8127397
    Abstract: The invention relates to a vacuum cleaner comprising a lower housing part, on which wheels are mounted for moving the vacuum cleaner along a floor surface, and which forms a dirt collection container with a suction inlet to which a suction hose is connectable, and an upper housing part which is mountable on the lower housing part and accommodates an electrically drivable suction unit, and an electric supply cable for connecting the suction unit to an electrical voltage source.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: March 6, 2012
    Assignee: Alfred Kaercher GmbH & Co. KG
    Inventors: Stefan Hess, Martin Foell, Andreas Kramer, Andreas Renz
  • Publication number: 20120045159
    Abstract: A bearing arrangement is provided having a shaft (1) with a bearing journal (2, 3), and a needle bearing (9) which is arranged thereon and has a cage (16) and needle rollers (11) accommodated in the latter. The bearing journal is provided with a hardened and precision-machined inner raceway (10) for the needle rollers and steps back radially in relation to axial shoulders (12, 13) of adjacent shaft sections (4, 5, 6, 7), and the axial shoulders serve as run-on surfaces for the axial end sides (14, 15) of the cage fitted between the axial shoulders.
    Type: Application
    Filed: May 28, 2010
    Publication date: February 23, 2012
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Stefan Hess, Peter Solfrank, Patrick Ullmann, Alexander Kern
  • Publication number: 20110088201
    Abstract: The invention relates to a vacuum cleaner comprising a lower housing part, on which wheels are mounted for moving the vacuum cleaner along a floor surface, and which forms a dirt collection container with a suction inlet to which a suction hose is connectable, and an upper housing part which is mountable on the lower housing part and accommodates an electrically drivable suction unit, and an electric supply cable for connecting the suction unit to an electrical voltage source.
    Type: Application
    Filed: September 29, 2010
    Publication date: April 21, 2011
    Applicant: Alfred Kaercher GmbH & Co. KG
    Inventors: Stefan Hess, Martin Foell, Andreas Kramer, Andreas Renz
  • Publication number: 20110030444
    Abstract: A method of making a compensation shaft (1) out of a drop-forged shaft blank (11) is provided. The compensation shaft includes a shaft section (5) with a base body (16) and a rib (15) with a height H starting from the base body. The method includes separating the forging ridges (14) formed in the die (9, 10) by trimming the forged shaft blank into a shape close to the final contour of the base body at trimming points, with the distance S2 between these trimming points being substantially smaller than the distance S1 between the forging ridges prior to separation.
    Type: Application
    Filed: August 4, 2010
    Publication date: February 10, 2011
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Peter Solfrank, Stefan Hess, Patrick Ullmann, Alexander Kern
  • Patent number: 7301048
    Abstract: A process for isolating vinyl acetate from the gas mixture formed in the reaction of ethylene with acetic acid and oxygen in the gas phase over catalysts comprising palladium or palladium compounds, with recirculation of the acetic-acid solution obtained in the circulating gas scrubber to the first distillation column (predewatering column).
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: November 27, 2007
    Assignee: Celanese Chemicals Europe GmbH
    Inventors: Johann Stamm, Bernd Rinne, Stefan Hess, Hans-Jochen Sachs, Michael Sehr, Michael J. Bayer, Berthold Nuber, Martin Wagner
  • Patent number: 7202377
    Abstract: The present invention relates to a method of saturating ethylene-containing gases with acetic acid before they are fed into a vinyl acetate reactor, in which the acetic acid recovered in the vinyl acetate process is introduced into a column having a countercurrent stripping section and a rectification section and ethylene-containing gas is supplied via the bottom, wherein the liquid taken off at the bottom of the column is divided into two substreams and one substream is pumped back into the column with maintenance of a minimum pumped circulation required for sufficient saturation with acetic acid.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: April 10, 2007
    Assignee: Celanese Chemicals Europe GmbH
    Inventors: Bernd Rinne, Stefan Hess, Johann Stamm, Berthold Nuber
  • Publication number: 20070032678
    Abstract: A process for isolating vinyl acetate from the gas mixture formed in the reaction of ethylene with acetic acid and oxygen in the gas phase over catalysts comprising palladium or palladium compounds, with recirculation of the acetic-acid solution obtained in the circulating gas scrubber to the first distillation column (predewatering column).
    Type: Application
    Filed: July 11, 2006
    Publication date: February 8, 2007
    Inventors: Johann Stamm, Bernd Rinne, Stefan Hess, Hans-Jochen Sachs, Michael Sehr, Michael Bayer, Berthold Nuber, Martin Wagner
  • Patent number: D612304
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: March 23, 2010
    Assignee: Georg Fischer Automotive AG
    Inventors: Dominik Mahnig, Stefan Hess
  • Patent number: D686952
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: July 30, 2013
    Assignee: Georg Fischer Automotive AG
    Inventors: Guido Rau, Stefan Hess, Dominik Mahnig