Patents by Inventor Stefan Tschirren

Stefan Tschirren 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: 20200268979
    Abstract: A piston rod unit for a device for administering a medical substance delays a release of a mechanism of the device and includes an outer piston rod with a hollow space and a contact face for interacting with a stopper to discharge the substance, and an inner piston rod mounted in the outer piston rod to form a cavity at the distal end of the outer piston rod. The cavity contains a viscous fluid and a fluid displacement element located at least partially in the cavity that is operably or integrally connected to the inner piston rod. During relative movement between the fluid displacement element and the outer piston rod, fluid displacement causes movement resistance, such that mechanism release is delayed. The outer piston rod includes a distal, first piston rod part, comprising the contact face and the cavity, and a second piston rod part adjoining the first.
    Type: Application
    Filed: May 13, 2020
    Publication date: August 27, 2020
    Inventors: Marc Fiechter, Stefan Burren, Markus Tschirren, Markus Hunziker
  • Publication number: 20190321557
    Abstract: A dosing device for an injection device, the dosing device including an actuating element for adjusting and/or dispensing a dose from the injection device, a thrust element for generating a forward movement for discharging a dose and a coupling to which the actuating element and the thrust element are coupled such that a rotational movement of the actuating element is transmitted directly to the thrust element and an axial movement of the actuating element is different than an axial movement of the thrust element.
    Type: Application
    Filed: July 3, 2019
    Publication date: October 24, 2019
    Inventors: Stefan Burren, Jürg Hirschel, Samuel Martinoia, Ulrich Moser, Markus Tschirren
  • Patent number: 10350359
    Abstract: A dosing device for an injection device, the dosing device including an actuating element for adjusting and/or dispensing a dose from the injection device, a thrust element for generating a forward movement for discharging a dose and a coupling to which the actuating element and the thrust element are coupled such that a rotational movement of the actuating element is transmitted directly to the thrust element and an axial movement of the actuating element is different than an axial movement of the thrust element.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: July 16, 2019
    Assignee: TecPharma Licensing AG
    Inventors: Stefan Burren, Jürg Hirschel, Samuel Martinoia, Ulrich Moser, Markus Tschirren
  • Publication number: 20190151565
    Abstract: An injection device comprising a cap for removing a needle protection cap from a product container, and a method for assembling an injection device. The cap comprises an engaging element for removing the needle protection cap from the product container when the cap is removed from the injection device. The engaging element can be deformed in such a way that the engaging element can be moved from a distanced position, in which the engaging element is radially distanced from the needle protection cap, into an engagement position, in which the engaging element engages with the needle protection cap, with the engaging element being deformed when the cap is removed.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 23, 2019
    Inventors: Felix Groetzbach, Markus Tschirren, Stefan Burren, Urs Kloetzli, Peter Stettler, Benjamin Loretz
  • Publication number: 20180259183
    Abstract: The present disclosure relates to apparatuses and methods that are useful for one or more aspects of a power production plant. More particularly, the disclosure relates to combustor apparatuses and methods for a combustor adapted to utilize different fuel mixtures derived from gasification of a solid fuel. Combustion of the different fuel mixtures within the combustor can be facilitated by arranging elements of the combustor controlled so that a defined set of combustion characteristics remains substantially constant across a range of different fuel mixtures.
    Type: Application
    Filed: January 12, 2018
    Publication date: September 13, 2018
    Inventors: Jeremy Eron Fetvedt, Xijia Lu, Brent Gregory, Chris Bonilha, James Lenertz, Stefan Tschirren, Hassan Abdulsater
  • Patent number: 9989246
    Abstract: A method includes providing a furnace including a radiant heating zone having metal heating coils and burners, concurrently applying a combustion media, having a combustibility, and a diluent to the burners, the burners burning the combustion media producing flames heating the radiant heating zone, and the diluent reducing the combustibility of the combustion media for reducing heat generated by the flames for reducing heat degradation of the metal heating coils.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: June 5, 2018
    Inventors: Majed Toqan, Prabhat Naredi, Naji Amira, Stefan Tschirren, Jörg Pross
  • Publication number: 20160076761
    Abstract: A method includes providing a furnace including a radiant heating zone having metal heating coils and burners, concurrently applying a combustion media, having a combustibility, and a diluent to the burners, the burners burning the combustion media producing flames heating the radiant heating zone, and the diluent reducing the combustibility of the combustion media for reducing heat generated by the flames for reducing heat degradation of the metal heating coils.
    Type: Application
    Filed: September 17, 2015
    Publication date: March 17, 2016
    Inventors: Majed Toqan, Prabhat Naredi, Naji Amira, Stefan Tschirren, Jörg Pross
  • Patent number: 8894352
    Abstract: A ring segment is provided for a gas turbine engine includes a panel and a cooling system. Cooling fluid is provided to an outer side of the panel and an inner side of the panel defines at least a portion of a hot gas flow path through the engine. The cooling system is located within that panel and receives cooling fluid from the outer side of the panel for cooling the panel. The cooling system includes a plurality of cooling fluid passages that receive cooling fluid from the outer side of the panel. The cooling fluid passages each have a generally axially extending portion that includes at least one fork. The fork(s) divide each cooling fluid passage into at least two downstream portions that each receives cooling fluid from the respective axially extending portion.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: November 25, 2014
    Assignee: Siemens Energy, Inc.
    Inventors: Eric C. Berrong, Ching-Pang Lee, Akash Bhatia, Ryan S. Yamane, Stefan Tschirren, Leonard J. Meyer
  • Publication number: 20120057960
    Abstract: A ring segment is provided for a gas turbine engine includes a panel and a cooling system. Cooling fluid is provided to an outer side of the panel and an inner side of the panel defines at least a portion of a hot gas flow path through the engine. The cooling system is located within that panel and receives cooling fluid from the outer side of the panel for cooling the panel. The cooling system includes a plurality of cooling fluid passages that receive cooling fluid from the outer side of the panel. The cooling fluid passages each have a generally axially extending portion that includes at least one fork. The fork(s) divide each cooling fluid passage into at least two downstream portions that each receives cooling fluid from the respective axially extending portion.
    Type: Application
    Filed: August 19, 2011
    Publication date: March 8, 2012
    Inventors: Eric C. Berrong, Ching-Pang Lee, Akash Bhatia, Ryan S. Yamane, Stefan Tschirren, Leonard J. Meyer
  • Patent number: 8122726
    Abstract: A combustion chamber of a combustion system has a combustion space, a support structure, a support element, and a heat shield. The heat shield has at least two segments, and each segment includes a liner element facing the combustion space and has an edge region, a gap communicating with the combustion space being formed between edge regions of adjacent segments, and a retaining device. The retaining device fixes the respective liner element on the support structure via the support element and forms a flange region that fits over the edge region of the respective liner element. The retaining device forms a first cooling passage with the support element and has at least one through-opening in the flange region. A cooling gas flows through the through.opening from the first cooling passage to the edge region.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: February 28, 2012
    Assignee: Alstom Technology Ltd
    Inventors: Stefan Tschirren, Daniel Burri, Andreas Abdon, Christian Steinbach
  • Patent number: 8006498
    Abstract: A combustion chamber of a combustion system comprises a combustion space, a support structure, a heat shield, and at least one through-opening. The heat shield has at least two segments, and each segment has an edge region, a gap communicating with the combustion space being formed between edge regions of adjacent segments, and a retaining device. The adjacent segments include a support element disposed in a bottom region of the gap. The retaining device fixes the respective liner element on the support structure via the respective support element. The at least one through-opening communicates with the gap so as to enable a cooling gas to flow through the through-opening. The at least one through-opening is disposed in at least one of the respective edge region and the support element at the bottom region of the gap.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: August 30, 2011
    Assignee: Alstom Technology Ltd
    Inventors: Stefan Tschirren, Daniel Burri, Andreas Abdon, Christian Steinbach
  • Publication number: 20090288422
    Abstract: A component arrangement is provided which includes two component elements with portions pushed one into the other, leaving a gap and arranged statically with respect to one another. The component arrangement also includes a sealing element sealing off the gap. One of the component elements has a groove which runs in the region of the gap to be sealed off and is open towards the other component element. The component that has the groove has a side face. The sealing element includes a holding element with a first side face and with a second side face and is arranged at least partially in the groove. The first side face of the holding element can be pushed against the side face of the groove by a pressure difference. The side face of the groove and/or the first side face of the holding element include/includes at least one pressure relief depression.
    Type: Application
    Filed: May 26, 2009
    Publication date: November 26, 2009
    Inventors: Christoph Cernay, Stefan Tschirren
  • Publication number: 20090202956
    Abstract: A combustion chamber of a combustion system has a combustion space, a support structure, a support element, and a heat shield. The heat shield has at least two segments, and each segment includes a liner element facing the combustion space and has an edge region, a gap communicating with the combustion space being formed between edge regions of adjacent segments, and a retaining device. The retaining device fixes the respective liner element on the support structure via the support element and forms a flange region that fits over the edge region of the respective liner element. The retaining device forms a first cooling passage with the support element and has at least one through-opening in the flange region. A cooling gas flows through the through.opening from the first cooling passage to the edge region.
    Type: Application
    Filed: February 9, 2009
    Publication date: August 13, 2009
    Applicant: ALSTOM Technology Ltd
    Inventors: Stefan Tschirren, Daniel Burri, Andreas Abdon, Christian Steinbach
  • Publication number: 20090199837
    Abstract: A combustion chamber of a combustion system comprises a combustion space, a support structure, a heat shield, and at least one through-opening. The heat shield has at least two segments, and each segment has an edge region, a gap communicating with the combustion space being formed between edge regions of adjacent segments, and a retaining device. The adjacent segments include a support element disposed in a bottom region of the gap. The retaining device fixes the respective liner element on the support structure via the respective support element. The at least one through-opening communicates with the gap so as to enable a cooling gas to flow through the through-opening. The at least one through-opening is disposed in at least one of the respective edge region and the support element at the bottom region of the gap.
    Type: Application
    Filed: February 9, 2009
    Publication date: August 13, 2009
    Applicant: ALSTOM Technology Ltd
    Inventors: Stefan Tschirren, Daniel Burri, Andreas Abdon, Christian Steinbach
  • Patent number: 7350360
    Abstract: The invention relates to an annular combustor (13) for a gas turbine (10), into which combustor (13) burners (14, 15) open on an inlet side, and which combustor (13) extends in the axial direction from the inlet side to an outlet side (33) and is lined on the insides with cooled liner segments (16, 17) for protection from the hot gases. In such a combustor, increased mechanical stability and flexibility in design and also simplification in manufacture and fitting are achieved by the liner segments (16, 17) being subdivided in the axial direction into a plurality of parts (16, 17) arranged one behind the other.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: April 1, 2008
    Assignee: ALSTOM Technology Ltd.
    Inventors: Peter Graf, Stefan Tschirren, Helmar Wunderle
  • Patent number: 7331182
    Abstract: At least one Helmholtz damper is arranged at a combustion chamber for a gas turbine in order to damp thermoacoustic oscillations; the damping volume of this Helmholtz damper is in communication with the combustion chamber via a connecting passage. Optimum damping is achieved in a simple way by virtue of the Helmholtz damper being designed in such a manner that its damping frequency is adjustable.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: February 19, 2008
    Assignee: ALSTOM Technology Ltd
    Inventors: Peter Graf, Stefan Tschirren, Helmar Wunderle
  • Patent number: 7069727
    Abstract: A gas turbo group has a combustion chamber comprising a catalytic burner stage (2), a preburner stage (1) located upstream from the catalytic burner stage, as well as a non-catalytic burner stage (11, 5, 6) located downstream from the catalytic burner stage. The preburner stage serves to always maintain a temperature (T1) at the inlet into the catalytic stage that corresponds at least to a minimum temperature (TMIN) necessary for operating the catalytic burner stage. According to the invention, the gas turbo group is operated so that the burner stage located downstream from the catalytic combustion chamber is taken into operation only when the temperature (T2) at the outlet from the catalytic stage has reached an upper limit in the presence of a maximum combustion air mass flow.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: July 4, 2006
    Assignee: Alstom Technology Ltd.
    Inventors: Jaan Hellat, Stefan Tschirren, Rolf Dittmann
  • Patent number: 7055331
    Abstract: In a burner arrangement for the annular combustion chamber of a gas turbine, a plurality of burners are arranged above one another, in each case in pairs in the radial direction, on concentric rings. In a burner arrangement of this type, the mechanical integrity of the turbine casing is increased and operation of the combustion chamber is optimized by virtue of the two burners in a pair of burners being oriented out of the parallel position, in such a manner that their burner axes converge in the direction of flow.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: June 6, 2006
    Assignee: ALSTOM Technology Ltd
    Inventors: Peter Graf, Stefan Tschirren, Helmar Wunderle
  • Publication number: 20050103018
    Abstract: At least one Helmholtz damper is arranged at a combustion chamber for a gas turbine in order to damp thermoacoustic oscillations; the damping volume of this Helmholtz damper is in communication with the combustion chamber via a connecting passage. Optimum damping is achieved in a simple way by virtue of the Helmholtz damper being designed in such a manner that its damping frequency is adjustable.
    Type: Application
    Filed: July 14, 2004
    Publication date: May 19, 2005
    Inventors: Peter Graf, Stefan Tschirren, Helmar Wunderle
  • Publication number: 20050039464
    Abstract: In a burner arrangement for the annular combustion chamber of a gas turbine, a plurality of burners are arranged above one another, in each case in pairs in the radial direction, on concentric rings. In a burner arrangement of this type, the mechanical integrity of the turbine casing is increased and operation of the combustion chamber is optimized by virtue of the two burners in a pair of burners being oriented out of the parallel position, in such a manner that their burner axes converge in the direction of flow.
    Type: Application
    Filed: July 14, 2004
    Publication date: February 24, 2005
    Inventors: Peter Graf, Stefan Tschirren, Helmar Wunderle