Patents by Inventor Ulrich Mann

Ulrich Mann 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: 9908679
    Abstract: A housing part for an explosion-protected housing (10) with flameproof encapsulation. The housing part comprises a porous body (20) in a passage (15) of the housing part. The passage (15) is closed in a flameproof manner by means of the porous body (20). The porous body (20) comprises an inner side (21) assigned to the interior of the housing (10) and an outer side (22) assigned to the surrounding area (12) comprising the explosive atmosphere. A gas volume flow can pass through the porous body (20), entering the porous body (20) on the inner side (21) and escape on the outer side (22) or vice versa. To prevent the penetration of water or of other aqueous liquids into the interior of the housing (10), the porous body (20) comprises a hydrophobic surface (B) in at least one area (31).
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: March 6, 2018
    Assignee: R. Stahl Schaltgeräte GmbH
    Inventors: Bernd Limbacher, Ulrich Mann
  • Patent number: 9492694
    Abstract: A pressure release device for a protective housing for flameproof enclosure of electrical operating means. The device includes an accommodating body (18) having a passage (22), and a porous body (24) arranged in the passage (22). The porous body (24) is elastically deformed by means of an interference fit in the passage (22), and thus, reliably supported therein free of flame or spark exiting gaps.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: November 15, 2016
    Assignee: R. Stahl Schaltgeräte GmbH
    Inventors: Ulrich Mann, Bernd Limbacher, Helmut Wurz
  • Patent number: 9403326
    Abstract: An explosion-proof housing (10) with a pressure release device (11) and method of manufacture. The pressure release device (11) including a porous body (12) having a gas-permeable porous central area (13) and a surrounding edge zone (22). A peripheral surface (21) of the porous body (12) is arranged in the edge zone (22). The porosity and/or the pore size of the porous body is specified or changed at the peripheral surface (21), or at the edge zone (22), such that the penetration of liquid casting material (G) into the central area (13) of the porous body (12) is prevented across the peripheral surface (21) or the edge zone (22). The edge zone (22) thus forms a barrier (B) for the casting material (G) which enables the porous body (12) to be inserted in a casting mold (31) and insert molded with casting material (G) in production of an accommodating part (25) of the housing.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: August 2, 2016
    Assignee: R. Stahl Schaltgeräte GmbH
    Inventors: Ulrich Mann, Bernd Limbacher
  • Publication number: 20150060445
    Abstract: A pressure release device for a protective housing for flameproof enclosure of electrical operating means. The device includes an accommodating body (18) having a passage (22), and a porous body (24) arranged in the passage (22). The porous body (24) is elastically deformed by means of an interference fit in the passage (22), and thus, reliably supported therein free of flame or spark exiting gaps.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventors: Ulrich Mann, Bernd Limbacher, Helmut Wurz
  • Publication number: 20150060464
    Abstract: An explosion-proof housing (10) with a pressure release device (11) and method of manufacture. The pressure release device (11) comprises a porous body (12) with a gas-permeable porous central area (13) and a surrounding edge zone (22). A peripheral surface (21) of the porous body (12) is arranged in the edge zone (22). The porosity and/or the pore size of the porous body is specified or changed at the peripheral surface (21), or at the edge zone (22), such that the penetration of liquid casting material (G) into the central area (13) of the porous body (12) is prevented across the peripheral surface (21) or the edge zone (22). The edge zone (22) thus forms a barrier (B) for the casting material (G) which enables the porous body (12) to be inserted in a casting mold (31) and insert molded with casting material (G) in production of an accommodating part (25) of the housing.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventors: Ulrich Mann, Bernd Limbacher
  • Publication number: 20150060465
    Abstract: A housing part for an explosion-protected housing (10) with flameproof encapsulation. The housing part comprises a porous body (20) in a passage (15) of the housing part. The passage (15) is closed in a flameproof manner by means of the porous body (20). The porous body (20) comprises an inner side (21) assigned to the interior of the housing (10) and an outer side (22) assigned to the surrounding area (12) comprising the explosive atmosphere. A gas volume flow can pass through the porous body (20), entering the porous body (20) on the inner side (21) and escape on the outer side (22) or vice versa. To prevent the penetration of water or of other aqueous liquids into the interior of the housing (10), the porous body (20) comprises a hydrophobic surface (B) in at least one area (31).
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventors: Bernd Limbacher, Ulrich Mann