Patents by Inventor Walter Hader

Walter Hader 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).

  • Internal mixer with bearing housings having a dirt particle outlet
    Patent number: 6802644
    Abstract: In an internal mixer, the bearing housings of the bearing arrangements for the journals of the rotors are mounted directly on the end walls of the housing. The gaps which are formed between the rotor and the end wall and between the journal and the end wall are connected to the outside by way of outlets. These outlets bridge the bearing which is encapsulated in the bearing housing.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: October 12, 2004
    Assignee: ThyssenKrupp Elastomertechnik GmbH
    Inventors: Walter Häder, Andreas Limper
  • Internal mixer
    Publication number: 20030112699
    Abstract: In an internal mixer, the bearing housings of the bearing arrangements for the journals of the rotors are mounted directly on the end walls of the housing. The gaps which are formed between the rotor and the end wall and between the journal and the end wall are connected to the outside by way of outlets. These outlets bridge the bearing which is encapsulated in the bearing housing.
    Type: Application
    Filed: December 18, 2002
    Publication date: June 19, 2003
    Applicant: ThyssenKrup Elastomertechnik GmbH
    Inventors: Walter Hader, Andreas Limper
  • Method and apparatus for the mixing of mixing material with thermoplastic material
    Patent number: 5297865
    Abstract: A plastics processing machine is associated with an internal mixer. Thermoplastic material is separately melted in the plastics processing machine and injected into the mixing chamber of the internal mixer, where it is mixed with fillers, caoutchouc or the like.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: March 29, 1994
    Assignee: Werner & Pfleiderer Gummitechnik GmbH
    Inventors: Wolfgang Engel, Andreas Limper, Walter Hader
  • Method and measuring device for the measurement of visco-elastic properties of polymer material
    Patent number: 5245861
    Abstract: For the measurement of the visco-elastic properties of a polymer material (69), such as plastics or rubber, a measuring wedge (47) is pressed into a rolled sheet (25) located on a work roll (5) of a mixing mill and conclusions are drawn from the applying forces and from the penetration depth of the measuring wedge onto the visco-elastic properties of the material (69).
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: September 21, 1993
    Assignee: Werner & Pfleiderer Gummitechnik GmbH
    Inventors: Andreas Limper, Walter Hader
  • Method for measuring the temperature of the mix in a mixing chamber of a kneader
    Patent number: 5152609
    Abstract: In a method for measuring the temperature of the mix in a mixing chamber of a kneader, the temperature of the mix being continuously measured by means of at least one sensor projecting into the mixing chamber, for the purpose of correcting measuring errors due to the heat conductivity of the sensor housing, a second sensor, in particular in the form of an infra-red sensor, is provided and directly detects the temperature of the mix at certain discrete times during the mixing process, the continuous temperature measuring of the first sensor being corrected according to the measuring of the second sensor when the mixing process is continued.
    Type: Grant
    Filed: July 18, 1991
    Date of Patent: October 6, 1992
    Assignee: Werner & Pfleiderer Gummitechnik GmbH
    Inventors: Walter Hader, Andreas Limper, Wolfgang Engel