Patents Assigned to Contitech Luftfedersyteme GmbH
  • Patent number: 7402216
    Abstract: A method for the production of reinforced tube-shaped structures (1) of rubber layers and reinforcement layers (2, 3) has the steps of: a) applying a first rubber layer (2a) with a first extrusion unit (4a) onto a series of sequential rigid cylindrical mandrels (5) which are coupled to each other and which are driven at an advancement speed (v) in the direction of an advancement axis (x); b) applying a first filament layer at defined desired filament angles (?1) referred to the advancement axis (x) with a bobbin creel unit (10a) having means which rotate about the advancing mandrels (5); c) applying atleast one further rubber layer (2b) to the first filament layer utilizing at least one additional extrusion unit (4b); d) continuously measuring the advancement speed (v) of the mandrels (5); controlling the quantity, which is applied via the first extrusion unit (4a), in dependence upon the measured advancement speed (v) in order to obtain a defined desired thickness of the first rubber layer (2a); f) controlli
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: July 22, 2008
    Assignee: Contitech Luftfedersyteme GmbH
    Inventors: Markus Berger, Rainer Oehl, Klaus Binder