Patents by Inventor Helmut Eidam

Helmut Eidam 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 of producing a porous paste, especially a porous plaster slurry, and a mixer for preparing such paste or slurry
    Patent number: 6402359
    Abstract: A porous paste, especially a plaster paste or slurry for producing sandwich-type plasterboard, is made in a disk-shaped mixer having a rotor rotatable in a mixing chamber by introducing compressed air or other pressurizable gas through a wall or bottom segment directly into the chamber so that the incoming pressurized gas meets the mixture with a shearing action along the wall or bottom.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: June 11, 2002
    Assignee: Babcock-BSH GmbH
    Inventors: Friedrich Bahner, Kurt Braun, Helmut Eidam, Horst Hose, Karl Maurer, Frank Ullsperger
  • Method of producing a porous paste, especially a porous plaster slurry, and a mixer for preparing such paste or slurry
    Patent number: 6376558
    Abstract: A porous paste, especially a plaster paste or slurry for producing sandwich-type plasterboard, is made in a disk-shaped mixer having a rotor rotatable in a mixing chamber by introducing compressed air or other pressurizable gas through a wall or bottom segment directly into the chamber so that the incoming pressurized gas meets the mixture with a shearing action along the wall or bottom.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: April 23, 2002
    Assignee: Babcock-BSH GmbH
    Inventors: Friedrich Bahner, Kurt Braun, Helmut Eidam, Horst Hose, Karl Maurer, Frank Ullsperger
  • Method of producing a porous paste, especially a porous plaster slurry, and a mixer for preparing such paste or slurry
    Publication number: 20010015935
    Abstract: A porous paste, especially a plaster paste or slurry for producing sandwich-type plasterboard, is made in a disk-shaped mixer having a rotor rotatable in a mixing chamber by introducing compressed air or other pressurizable gas through a wall or bottom segment directly into the chamber so that the incoming pressurized gas meets the mixture with a shearing action along the wall or bottom.
    Type: Application
    Filed: March 30, 2001
    Publication date: August 23, 2001
    Applicant: BABCOCK-BSH GmbH
    Inventors: Friedrich Bahner, Kurt Braun, Helmut Eidam, Horst Hose, Karl Maurer, Frank Ullsperger
  • Process for making gypsum fiberboard
    Patent number: 4966739
    Abstract: In the process for making gypsum fiberboard the boards are formed or molded rom a mash containing calcium sulfate dihydrate and fiberous material. By heating and subsequently cooling the boards the dihydrate is first converted into the hemihydrate and subsequently recrystallized again to the dihydrate. Known processes require day line setting times which are economically disadvantageous. According to the present invention these times are shortened by pulling or drawing water, an aqueous solution or a water containing mixture through the boards after the cooling step. Advantageously a setting accelerating agent can be dissolved in the water. By these features the setting time can be shortened to less than two hours. By addition of a binding agent, e.g. starch, to the fluid drawn through the boards the strength of the boards is increased.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: October 30, 1990
    Assignee: Babcock-Bsh Aktiengesellschaft Vormals Buttner-Schilde-Haas AG
    Inventors: Josef Stipek, Friedrich Bahner, Horst Hose, Karl Freisinger, Helmut Eidam