Patents by Inventor John W. Jörg Alexnat

John W. Jörg Alexnat 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: 6536548
    Abstract: The exhaust system has an exhaust comprising at least one silencer and/or catalytic converter which has a housing with a housing casing having a material thickness of not more than 1 mm and with housing ends. The exhaust furthermore has metallic pipes which are rigidly connected to said housing ends and at least one of which has a material thickness of, likewise, not more than 1 mm. The retaining element for holding the exhaust on the vehicle body has, for each housing end, a holder with a metallic retaining member connected to the pipe connected to the housing end or possibly to the housing itself. The at least one pipe having a material thickness of not more than 1 mm and to which the retaining member is connected or the housing casing to which the retaining member is connected is surrounded by a sleeve-like reinforcing element to which the retaining member is fastened, for example, by welding or brazing or adhesive bonding.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: March 25, 2003
    Assignee: Scambia Industrial Developments AG
    Inventors: Pieter Delfina Steenackers, John W. Jörg Alexnat
  • Patent number: 6298935
    Abstract: The exhaust system has an exhaust with at least one silencer and/or catalytic converter which has a housing having a housing casing with a wall thickness of not more than 1 mm and having housing ends, and metallic pipes which are rigidly connected to the latter and at least one of which has a wall thickness of, likewise, not more than 1 mm. The retaining means for holding the exhaust on the vehicle body have, for each housing end, a metallic retaining member connected to the pipe adjacent to the housing end. The at least one pipe with a wall thickness of not more than 1 mm is surrounded by a sleeve to which the retaining member is fastened, for example by welding or brazing or adhesive bonding.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: October 9, 2001
    Assignee: Scambia Industrial Developments AG
    Inventors: Pieter Delfina Steenackers, John W. Jörg Alexnat
  • Patent number: 6260652
    Abstract: A motor vehicle has an internal combustion engine and an exhaust system with an exhaust which has two flexible pipe members and at least one casing arranged downstream of said pipe members and belonging to a catalytic converter and/or silencer. The two flexible pipe members have a bellows and define a straight connecting line which passes through said pipe members, for example at least approximately through their centers, and at least approximately intersects a virtual axis about which the engine casing executes swivel movements during operation as a result of changes in power and/or operations of the internal combustion engine. The swivelling movements of the engine casing then cause essentially only bending movements with virtually no changes in length and shear movements of the bellows, so that the latter have a long service life.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: July 17, 2001
    Assignee: Scambia Industrial Developments AG
    Inventors: Pieter Delfina Steenackers, John W. Jörg Alexnat