Patents by Inventor Steffen Buhl

Steffen Buhl 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).

  • Patent number: 10364692
    Abstract: The invention relates to an expansion machine (20), comprising an output shaft (24) and a shaft sealing ring (25) that interacts with the output shaft. The expansion machine (20) has an inflow region (21) and an outflow region (22). During operation, a working medium flows through the expansion machine (20), wherein compressed working medium flows into the inflow region (21) and expanded working medium flows out of the outflow region (22). The shaft sealing ring (25) separates a valve space (11) filled with working medium from a surrounding space (40). A valve (10) is arranged in the expansion machine (20). The pressure in the valve space (11) can be controlled by means of the valve (10).
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: July 30, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Nadja Eisenmenger, Steffen Buhl
  • Patent number: 10301976
    Abstract: Three-way valve with a valve housing and a closing body arranged in a longitudinally movable manner in the valve housing. An inlet channel, a first outlet channel and a second outlet channel are formed in the valve housing. The closing body interacts by longitudinal movement with a first valve seat formed in the valve housing and thereby opens and closes a first hydraulic connection between the inlet channel and the first outlet channel. Furthermore, the closing body interacts by longitudinal movement with a second valve seat formed in the valve housing and thereby opens and closes a second hydraulic connection between the inlet channel and the second outlet channel. A throttle is formed in the second hydraulic connection.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: May 28, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Ganesan Vengianan Periasamy, Sophie-Charlotte Deger-Panthene, Steffen Buhl, Stephan Wehr
  • Patent number: 10247048
    Abstract: Gate valve (1) with a valve casing (4) and a closing body (3) arranged longitudinally movably in the valve casing (4). An inlet channel (5) and an outlet channel (6) are formed in the valve casing (4). The closing body (3) via longitudinal movement cooperates with a valve seat (8) formed in the valve casing (4) and hence opens and closes a hydraulic connection between the inlet channel (5) and the outlet channel (6). The inlet channel (5) and the outlet channel (6) are each formed as a spiral.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: April 2, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Nadja Eisenmenger, Sophie-Charlotte Deger-Panthene, Steffen Buhl
  • Publication number: 20180171811
    Abstract: The invention relates to an expansion machine (20), comprising an output shaft (24) and a shaft sealing ring (25) that interacts with the output shaft. The expansion machine (20) has an inflow region (21) and an outflow region (22). During operation, a working medium flows through the expansion machine (20), wherein compressed working medium flows into the inflow region (21) and expanded working medium flows out of the outflow region (22). The shaft sealing ring (25) separates a valve space (11) filled with working medium from a surrounding space (40). A valve (10) is arranged in the expansion machine (20). The pressure in the valve space (11) can be controlled by means of the valve (10).
    Type: Application
    Filed: October 22, 2015
    Publication date: June 21, 2018
    Inventors: Nadja Eisenmenger, Steffen Buhl
  • Publication number: 20170292410
    Abstract: Three-way valve with a valve housing and a closing body arranged in a longitudinally movable manner in the valve housing. An inlet channel, a first outlet channel and a second outlet channel are formed in the valve housing. The closing body interacts by longitudinal movement with a first valve seat formed in the valve housing and thereby opens and closes a first hydraulic connection between the inlet channel and the first outlet channel. Furthermore, the closing body interacts by longitudinal movement with a second valve seat formed in the valve housing and thereby opens and closes a second hydraulic connection between the inlet channel and the second outlet channel. A throttle is formed in the second hydraulic connection.
    Type: Application
    Filed: April 10, 2017
    Publication date: October 12, 2017
    Inventors: Ganesan Vengianan Periasamy, Sophie-Charlotte Deger-Panthene, Steffen Buhl, Stephan Wehr
  • Publication number: 20170292625
    Abstract: Gate valve (1) with a valve casing (4) and a closing body (3) arranged longitudinally movably in the valve casing (4). An inlet channel (5) and an outlet channel (6) are formed in the valve casing (4). The closing body (3) via longitudinal movement cooperates with a valve seat (8) formed in the valve casing (4) and hence opens and closes a hydraulic connection between the inlet channel (5) and the outlet channel (6). The inlet channel (5) and the outlet channel (6) are each formed as a spiral.
    Type: Application
    Filed: April 10, 2017
    Publication date: October 12, 2017
    Inventors: Nadja Eisenmenger, Sophie-Charlotte Deger-Panthene, Steffen Buhl
  • Publication number: 20160024950
    Abstract: The invention relates to a steam turbine 5, in particular for utilizing the waste heat of an internal combustion engine, having at least one turbine housing, having a guide wheel 10 that has at least one nozzle, and having at least one rotor 6, wherein the nozzle is in the form of a duct 11 formed into the guide wheel 10. According to the invention, a steam turbine 5 is provided, the nozzles of which can be manufactured in a simple manner. This is achieved by virtue of the fact that the duct 11 has a constant width B and has a depth T that varies along the duct 11. In this way, the duct 11 can be produced by means of a single tool in a single working operation.
    Type: Application
    Filed: February 27, 2014
    Publication date: January 28, 2016
    Inventors: Andreas Wengert, Hans-Christoph Magel, Wolfgang Stolper, Nadja Eisenmenger, Frank Ulrich Rueckert, Steffen Buhl, Thomas Steidten
  • Patent number: 9118146
    Abstract: A plug-in device (10) for providing commands and/or signals comprising an attachment part (12), an adaptor (22), and at least one command or notification device (30). The device (10) includes a plug-in rotary coupling for connecting the adaptor and attachment part in response to relative rotational movement about an axial direction (A). For locking the coupling, a locking web (62) is provided for engagement and disengagement by a locking coupling web (88) in response to relative rotation of the adaptor (22) and attachment part (12). A catch lock further is provided that includes a catch (68) arranged on a plug-in appendage (42 and a counter catch (90, 92) that are engageable by relative rotation of the adapter (22) and the attachment part (12).
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: August 25, 2015
    Assignee: R. STAHL Schaltgerate GmbH
    Inventors: Berthold Schulz, Steffen Buhl
  • Publication number: 20140287613
    Abstract: A plug-in device (10) for providing commands and/or signals comprising an attachment part (12), an adaptor (22), and at least one command or notification device (30). The device (10) includes a plug-in rotary coupling for connecting the adaptor and attachment part in response to relative rotational movement about an axial direction (A). For locking the coupling, a locking web (62) is provided for engagement and disengagement by a locking coupling web (88) in response to relative rotation of the adaptor (22) and attachment part (12). A catch lock further is provided that includes a catch (68) arranged on a plug-in appendage (42 and a counter catch (90, 92) that are engageable by relative rotation of the adapter (22) and the attachment part (12).
    Type: Application
    Filed: March 19, 2014
    Publication date: September 25, 2014
    Applicant: R. STAHL Schaltgerate GmbH
    Inventors: Berthold Schulz, Steffen Buhl
  • Patent number: 7617708
    Abstract: An ignition lock for a motor vehicle includes a carrier element for holding an ignition key that is inserted in the ignition lock. The carrier element is movable along a longitudinal axis of the ignition lock. The carrier element pushes a slide bar from a blocking position to an unblocking position when the carrier element moves along the longitudinal axis. A latch bar, when in its latching position, restricts a movement of the carrier element along the longitudinal axis and, when in its unlatching position, allows the carrier element to move along the longitudinal axis. When the latch bar is in its unlatching position and the slide bar is in its blocking position, the slide bar prevents the latch bar from moving from the unlatching position to the latching position.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: November 17, 2009
    Assignees: Volkswagen AG, Marquardt GmbH
    Inventors: Hans-Joachim Frohne, Ralf Borngräber, Steffen Buhl, Dennis Meβmer, Thomas Schwarz
  • Publication number: 20080028807
    Abstract: An ignition lock for a motor vehicle includes a carrier element for holding an ignition key that is inserted in the ignition lock. The carrier element is movable along a longitudinal axis of the ignition lock. The carrier element pushes a slide bar from a blocking position to an unblocking position when the carrier element moves along the longitudinal axis. A latch bar, when in its latching position, restricts a movement of the carrier element along the longitudinal axis and, when in its unlatching position, allows the carrier element to move along the longitudinal axis. When the latch bar is in its unlatching position and the slide bar is in its blocking position, the slide bar prevents the latch bar from moving from the unlatching position to the latching position.
    Type: Application
    Filed: July 28, 2006
    Publication date: February 7, 2008
    Inventors: Hans-Joachim Frohne, Ralf Borngraber, Steffen Buhl, Dennis Messmer, Thomas Schwarz