Patents by Inventor Carlos Backes

Carlos Backes 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).

  • Method for producing a housing for a throttle valve connection piece
    Patent number: 6649111
    Abstract: The invention relates to a method for producing a housing (12) for a throttle valve connection piece (10), which housing is to have particularly high dimensional stability. For this purpose, the housing (12), which has a throttle orifice (16) for a throttle valve (20), is produced from plastic (14) by the injection molding method, plastic (14) being partially injected around a metal cylinder (28) which, at least in the region of the throttle valve (20), forms the throttle orifice (16). In this case, before the injection molding method, an expanding mandrel (50) is expanded against the inner face (33) of the metal cylinder (28). During the injection molding method, the inner face (33) of the metal cylinder (28) is supported at least partially by the expanding mandrel (50). After the injection molding method, a reduction in the outer circumference (80) of the expanding mandrel (50) is carried out in order to remove the expanding mandrel (50) from the interior (70) of the metal cylinder (28).
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: November 18, 2003
    Assignee: Mannesmann VDO AG
    Inventors: Thomas Hannewald, Armin Seeger, Rolf Oppermann, Michael Haede, Rüdiger Mörbe, Carlos Backes, Horst Schäfer
  • Method for producing a housing for a throttle valve connection piece and throttle valve connection piece
    Publication number: 20020023347
    Abstract: The invention relates to a method for producing a housing (12) for a throttle valve connection piece (10), which housing is to have particularly high dimensional stability. For this purpose, the housing (12), which has a throttle orifice (16) for a throttle valve (20), is produced from plastic (14) by the injection molding method, plastic (14) being partially injected around a metal cylinder (28) which, at least in the region of the throttle valve (20), forms the throttle orifice (16). In this case, before the injection molding method, an expanding mandrel (50) is expanded against the inner face (33) of the metal cylinder (28). During the injection molding method, the inner face (33) of the metal cylinder (28) is supported at least partially by the expanding mandrel (50). After the injection molding method, a reduction in the outer circumference (80) of the expanding mandrel (50) is carried out in order to remove the expanding mandrel (50) from the interior (70) of the metal cylinder (28).
    Type: Application
    Filed: April 18, 2001
    Publication date: February 28, 2002
    Inventors: Thomas Hannewald, Armin Seeger, Rolf Oppermann, Michael Haede, Rudiger Morbe, Carlos Backes, Horst Schafer