Patents by Inventor Andreas Fesl

Andreas Fesl 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: 20250129850
    Abstract: The invention relates to a mechanical seal assembly, comprising a mechanical seal (2) having a rotating slide ring (3) and a stationary slide ring (4) which define a sealing gap (5) between their sliding surfaces (3a, 4a), and a torque meter (6) which is configured to detect a torque acting on the stationary slide ring (4), wherein the torque meter (6) comprises a measuring unit (7) and a sensor (9), wherein the measuring unit (7) is fixed by a foot (72) to a housing (8) and comprises a free end (71) which protrudes in a groove (40) formed in an outer periphery of the stationary slide ring (4), and wherein the sensor (9) is configured to detect a position change of the measuring unit (7) in the groove (40).
    Type: Application
    Filed: July 19, 2022
    Publication date: April 24, 2025
    Applicant: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Florian Dotzer, Andreas Fesl, Dieter Klusch
  • Patent number: 12270474
    Abstract: The invention relates to a mechanical seal arrangement (1) comprising a mechanical seal (2) having a rotating seal ring (3) with a first sealing surface (3a) and a stationary seal ring (4) with a second sealing surface (4a), a pre-tensioning device (6), to pre-tension one of the two sliding rings in the axial direction (X-X), a secondary sealing member (7) disposed on a rear side (40) of the axially pre-tensioned sliding ring, the pre-tensioning device (6) pre-tensioning the axially pre-tensioned sliding ring via the secondary sealing member (7), and a sleeve (8), which is arranged radially inside the secondary sealing member (7), the secondary sealing member (7) being arranged on the rear side (40) of the axially pre-tensioned sliding ring, the secondary sealing member (7) having a sealing edge (70) which is closed in an annular shape in the circumferential direction which projects from the secondary sealing member (7) in the axial direction (X-X) to the axially pre-tensioned sliding ring, wherein the sealin
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: April 8, 2025
    Assignee: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Andreas Fesl, Benjamin Hellmig
  • Publication number: 20250092952
    Abstract: The invention relates to a mechanical seal arrangement for sealing a process chamber (6), which is filled with a non-toxic, gaseous process medium, with respect to a bearing chamber (8), comprising a first mechanical seal (2) with a rotating slide ring (20) having a first sliding surface (20a) and a stationary slide ring (21) having a second sliding surface (21a), which define a first sealing gap (22) between the sliding surfaces (20a, 21a), a second mechanical seal (3) with a rotating slide ring (30) having a third sliding surface (30a) and a stationary slide ring (31) having a fourth sliding surface (31a), which define a second sealing gap (32) between the sliding surfaces (30a, 31a), a first pretensioning device (4) which prestresses the stationary slide ring (21) of the first mechanical seal (2) in the axial direction (X-X) and a second pretensioning device (5) which prestresses the stationary slide ring (31) of the second mechanical seal (3) in the axial direction (X-X), a fluid chamber (7) arranged betw
    Type: Application
    Filed: January 17, 2023
    Publication date: March 20, 2025
    Applicant: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Ferdinand Werdecker, Andreas Fesl
  • Patent number: 12203481
    Abstract: The invention relates to a compressor arrangement comprising a compressor (2) for compressing a process gas (13) from a suction region (21) towards a pressure region (22), a mechanical seal arrangement (3) for sealing against an atmosphere (6) on a shaft (5) of the compressor (2), wherein the mechanical seal arrangement comprises a mechanical seal (4) having a stationary slide ring (41) with a first sliding surface (41a) and a rotating slide ring (42) with a second sliding surface (42a), which define a sealing gap (42a) between the sliding surfaces (41a, 42a), and a barrier fluid supply (7) with a barrier fluid line (70) which extends from the pressure region (22) of the compressor (2) to the mechanical seal (4) and through which process gas is branched off from the pressure region, the stationary slide ring (41) having a through opening (8), which extends from a rear side (41b) of the stationary slide ring (41) to an orifice at the first sliding surface (41a) of the stationary slide ring to supply process ga
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: January 21, 2025
    Assignee: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Ferdinand Werdecker, Glenn Schmidt, Benjamin Hellmig, Maximilian Frank, Florian Bauer, Andreas Fesl
  • Publication number: 20240418178
    Abstract: The invention relates to a compressor arrangement comprising a compressor (2) for compressing a process gas (13) from a suction region (21) towards a pressure region (22), a mechanical seal arrangement (3) for sealing against an atmosphere (6) on a shaft (5) of the compressor (2), wherein the mechanical seal arrangement comprises a mechanical seal (4) having a stationary slide ring (41) with a first sliding surface (41a) and a rotating slide ring (42) with a second sliding surface (42a), which define a sealing gap (42a) between the sliding surfaces (41a, 42a), and a barrier fluid supply (7) with a barrier fluid line (70) which extends from the pressure region (22) of the compressor (2) to the mechanical seal (4) and through which process gas is branched off from the pressure region, the stationary slide ring (41) having a through opening (8), which extends from a rear side (41b) of the stationary slide ring (41) to an orifice at the first sliding surface (41a) of the stationary slide ring to supply process ga
    Type: Application
    Filed: February 1, 2022
    Publication date: December 19, 2024
    Applicant: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Ferdinand Werdecker, Glenn Schmidt, Benjamin Hellmig, Maximilian Frank, Florian Bauer, Andreas Fesl
  • Publication number: 20240376985
    Abstract: The invention relates to a mechanical seal assembly (1) for sealing between a high-pressure region (8) and a low-pressure region (9) on a rotating component (7), comprising a mechanical seal (2) with a rotating slide ring (3) with a first slide surface (30) and a stationary slide ring (4) with a second slide surface (40), wherein a sealing gap (5) is defined between the slide surfaces (30, 40), a slide ring carrier (31) for the rotating slide ring (3), which is configured to connect the rotating slide ring (3) to the rotating component (7) in a rotationally fixed manner, wherein the slide ring carrier (31) comprises a sleeve region (32), and a force support arrangement (6), which is configured to support an axial force (F) acting on the mechanical seal assembly (1), wherein the force support arrangement (6) is arranged on an end face (32a) of the sleeve region (32) of the slide ring carrier (31), wherein the force support arrangement (6) comprises a clamping sleeve (60), a conical sleeve (61) and a split ring
    Type: Application
    Filed: August 2, 2022
    Publication date: November 14, 2024
    Applicant: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Andreas Fesl, Stephan Rankl, Florian Bauer
  • Patent number: 11680644
    Abstract: The invention relates to a gas-lubricated mechanical seal arrangement (1) comprising a first mechanical seal (2) having a first rotating slide ring (21) and a first slide ring (22) defining a first sealing gap (23) between sealing surfaces (21a, 22a), the first slide ring (22) having a passageway (25) for supplying a barrier fluid to the first sealing gap (23), wherein the passageway (25) extends from a rear surface (22b) to the sliding surface (22a) of the first stationary slide ring (22), and wherein on the first rotating slide ring (21) a first secondary seal (4) for sealing and a centering device (5) for centering of the first rotating slide ring (21) are arranged.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: June 20, 2023
    Assignee: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Ferdinand Werdecker, Andreas Fesl, Michael Müller, Josef Strobl, Johannes Strohmeier, Benjamin Hellmig
  • Publication number: 20230175590
    Abstract: The invention relates to a mechanical seal arrangement (1) comprising a mechanical seal (2) having a rotating seal ring (3) with a first sealing surface (3a) and a stationary seal ring (4) with a second sealing surface (4a), a pre-tensioning device (6), to pre-tension one of the two sliding rings in the axial direction (X-X), a secondary sealing member (7) disposed on a rear side (40) of the axially pre-tensioned sliding ring, the pre-tensioning device (6) pre-tensioning the axially pre-tensioned sliding ring via the secondary sealing member (7), and a sleeve (8), which is arranged radially inside the secondary sealing member (7), the secondary sealing member (7) being arranged on the rear side (40) of the axially pre-tensioned sliding ring, the secondary sealing member (7) having a sealing edge (70) which is closed in an annular shape in the circumferential direction which projects from the secondary sealing member (7) in the axial direction (X-X) to the axially pre-tensioned sliding ring, wherein the sealin
    Type: Application
    Filed: May 11, 2021
    Publication date: June 8, 2023
    Applicant: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Andreas Fesl, Benjamin Hellmig
  • Patent number: 11255440
    Abstract: The invention relates to a gas-lubricated mechanical seal arrangement using a gaseous fluid as a barrier medium, comprising a mechanical seal comprising a rotating slide ring (2) and a stationary slide ring (3) defining a seal gap (4) therebetween, a biasing means (5) biasing the stationary slide ring (3) towards the rotating slide ring (2), a fluid space (6), into which the gaseous fluid can be introduced, a first slide ring carrier (20) for retaining the rotating slide ring (2), the first slide ring carrier (20) having a first axial surface (21), a second slide ring carrier (30) for retaining the stationary slide ring (3), the second slide ring carrier (30) having a second axial surface (31), the second slide ring (30) and the stationary slide ring (3) being arranged together on a displacement surface (32) so as to be displaceable in the axial direction (X-X), an axial gap (7), which is limited by the first axial surface (21) and the second axial surface (31), and an antechamber (8) which is formed at the s
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: February 22, 2022
    Assignee: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Ferdinand Werdecker, Andreas Schrufer, Andreas Fesl, Josef Strobl, Giuliano Rossi
  • Publication number: 20210207715
    Abstract: The invention relates to a gas-lubricated mechanical seal arrangement (1) comprising a first mechanical seal (2) having a first rotating slide ring (21) and a first slide ring (22) defining a first sealing gap (23) between sealing surfaces (21a, 22a), the first slide ring (22) having a passageway (25) for supplying a barrier fluid to the first sealing gap (23), wherein the passageway (25) extends from a rear surface (22b) to the sliding surface (22a) of the first stationary slide ring (22), and wherein on the first rotating slide ring (21) a first secondary seal (4) for sealing and a centering device (5) for centering of the first rotating slide ring (21) are arranged.
    Type: Application
    Filed: April 25, 2019
    Publication date: July 8, 2021
    Applicant: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Ferdinand Werdecker, Andreas Fesl, Michael Müller, Josef Strobl, Johannes Strohmeier, Benjamin Hellmig
  • Publication number: 20200278030
    Abstract: The invention relates to a gas-lubricated mechanical seal arrangement using a gaseous fluid as a barrier medium, comprising a mechanical seal comprising a rotating slide ring (2) and a stationary slide ring (3) defining a seal gap (4) therebetween, a biasing means (5) biasing the stationary slide ring (3) towards the rotating slide ring (2), a fluid space (6), into which the gaseous fluid can be introduced, a first slide ring carrier (20) for retaining the rotating slide ring (2), the first slide ring carrier (20) having a first axial surface (21), a second slide ring carrier (30) for retaining the stationary slide ring (3), the second slide ring carrier (30) having a second axial surface (31), the second slide ring (30) and the stationary slide ring (3) being arranged together on a displacement surface (32) so as to be displaceable in the axial direction (X-X), an axial gap (7), which is limited by the first axial surface (21) and the second axial surface (31), and an antechamber (8) which is formed at the s
    Type: Application
    Filed: October 1, 2018
    Publication date: September 3, 2020
    Applicant: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Ferdinand Werdecker, Andreas Schrufer, Andreas Fesl, Josef Strobl, Giuliano Rossi
  • Publication number: 20150369369
    Abstract: The invention refers to a mechanical seal arrangement, comprising: a rotatable seal ring (2), a stationary seal ring (3) and a secondary seal device (5), said secondary seal device (5) being made in one piece and comprising a secondary seal (51) and a ring element (52) of different materials, and the ring element (52) being arranged on the secondary seal (51) on a side directed to the stationary seal ring (3).
    Type: Application
    Filed: November 7, 2013
    Publication date: December 24, 2015
    Inventors: Joachim Otschik, Peter Droscher, Andreas Fesl, Thomas Holzapfel, Klaus Lang, Gunther Lederer, Petia Philippi, Rudolf Schicktanz, Andreas Schrufer, Berthold Vogel
  • Patent number: 8939450
    Abstract: The invention relates to a mechanical seal assembly for sealing between a high pressure region and a low pressure region, comprising: a stationary seal ring connected to a stationary component, a rotating seal ring connected to a rotating component, a divided power absorption ring arranged at the rotating component, and a compensation ring unit comprising a first ring, a second ring and a third ring, wherein the first ring and the second ring have a higher strength than the third ring, and wherein the compensation ring unit is arranged in the force path between the high pressure region and the divided power absorption ring.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: January 27, 2015
    Assignee: EagleBurgmann Germany GmbH & Co., KG
    Inventor: Andreas Fesl
  • Publication number: 20140070497
    Abstract: A slide ring seal arrangement including a rotating slide ring (2), a static slide ring (3) and a preload device for preloading at least one of the slide rings, wherein the preload device includes a spring washer (7) with a basic body (70), with at least one spring bar (71) and with at least one engagement region (72) provided on the end of the spring bar (71), wherein the spring bars (71) run in the circumferential direction of the spring washer (7), and wherein the engagement region (72) is in engagement with a recess (30) provided on the slide ring in order to exert on the slide ring a preload force (F) acting in the axial direction (X-X).
    Type: Application
    Filed: January 17, 2012
    Publication date: March 13, 2014
    Applicant: CARL FREUDENBERG KG
    Inventors: Ferdinand Werdecker, Andreas Fesl, Thomas Keller, Peter Feigl
  • Patent number: 8523186
    Abstract: A slide ring seal arrangement comprises a rotationally fixed slide ring (4) and a slide ring (11), which is provided for rotating together with a rotating component, these slide rings each being held in a loose seat and interacting, in, in essence, radially oriented sealing surfaces, which are prestressed with a main prestressing force while in contact with one another. Each slide ring, on its front face that faces away from the sealing surface, is axially supported on a supporting part (14, 17) via an annular bearing surface (16, 20) provided between the respective supporting part and the adjacent front face of the respective slide ring. A load ratio (d12?dH2)/(d12?d22) of =2.0, preferably between 0.8 and 2.0, preferably no greater than between 1.0 and 1.5, more preferably approximately 1.3 is maintained on the bearing surface (16, 20). The measurement (d1?d2) of each bearing surface (16, 20) is equal to =10 mm, preferably between 0.2 and 2.0, preferably no more than approximately 0.6 mm.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: September 3, 2013
    Assignee: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Andreas Schrüfer, Manfred Oppler, Günther Lederer, Armin Laxander, Klaus Lang, Rolf Johannes, Andreas Fesl, Peter Dröscher
  • Publication number: 20120133099
    Abstract: The invention relates to a mechanical seal assembly for sealing between a high pressure region (21) and a low pressure region (22), comprising: a stationary seal ring (4) connected to a stationary component (6), a rotating seal ring (3) connected to a rotating component (2), a divided power absorption ring (7) arranged at the rotating component (2), and a compensation ring unit (10) comprising a first ring (11), a second ring (12) and a third ring (13), wherein the first ring (11) and the second ring (12) have a higher strength than the third ring (13), and wherein the compensation ring unit (10) is arranged in the power flow between the high pressure region (21) and the divided power absorption ring (7).
    Type: Application
    Filed: July 20, 2010
    Publication date: May 31, 2012
    Applicant: EagleBurgmann Germany GmbH & Co. KG
    Inventor: Andreas Fesl
  • Publication number: 20110175297
    Abstract: The invention relates to a slide ring seal arrangement comprising: a first stationary slide ring (2) having a first slide surface (2a), a second rotating slide ring (3) having a second slide surface (3a), wherein the rotating slide ring (3) rotates together with a rotating component (10) and wherein the slide surfaces (2a, 3a) of the slide rings (2, 3) are disposed opposite of each other and define a sealing gap (4) between each other, a dynamic secondary seal (13) that is arranged on a side (2b) of the stationary slide ring (2) facing away from the sealing gap (4) and seals a housing sealing region (12), a pretensioning device (7) that applies a pretension in the axial direction onto the stationary slide ring (2), and a filter element (14; 24) that has a substantially ring shape and is arranged in the radial direction further from a rotational axis (X-X) than the housing sealing region (12), in order to prevent dirt particles from depositing on the secondary seal (13) or on the housing sealing region (12).
    Type: Application
    Filed: July 15, 2009
    Publication date: July 21, 2011
    Inventors: Andreas Fesl, Peter Dröscher
  • Publication number: 20110042903
    Abstract: A slide ring seal arrangement comprises a rotationally fixed slide ring (4) and a slide ring (11), which is provided for rotating together with a rotating component, these slide rings each being held in a loose seat and interacting, in, in essence, radially oriented sealing surfaces, which are prestressed with a main prestressing force while in contact with one another. Each slide ring, on its front face that faces away from the sealing surface, is axially supported on a supporting part (14, 17) via an annular bearing surface (16, 20) provided between the respective supporting part and the adjacent front face of the respective slide ring. A load ratio (d12?dH2)/(d12?d22) of =2.0, preferably between 0.8 and 2.0, preferably no greater than between 1.0 and 1.5, more preferably approximately 1.3 is maintained on the bearing surface (16, 20). The measurement (d1?d2) of each bearing surface (16, 20) is equal to =10 mm, preferably between 0.2 and 2.0, preferably no more than approximately 0.6 mm.
    Type: Application
    Filed: July 6, 2006
    Publication date: February 24, 2011
    Applicant: Burgmann Industries GmbH & Co. KG
    Inventors: Andreas Schrüfer, Manfred Oppler, Günther Lederer, Armin Laxander, Klaus Lang, Rolf Johannes, Andreas Fesl, Peter Dröscher