Patents by Inventor Rainer Rohlig

Rainer Rohlig 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).

  • Filter cartridge
    Patent number: 4072616
    Abstract: A filter cartridge comprises a body of sintered material having a star-shaped profile and a substantially constant wall thickness. The body has a folded or corrugated configuration with the corrugations extending longitudinally parallel to the axis or along a helix or screw-thread pattern. The ribs or corrugations can be symmetrical about axial planes of the body and, in an embodiment of the invention, are parallel thereto.
    Type: Grant
    Filed: August 10, 1976
    Date of Patent: February 7, 1978
    Assignee: Sintermetallwerk Krebsoge GmbH
    Inventor: Rainer Rohlig
  • Filter cartridge with folded filter sheath
    Patent number: 4071937
    Abstract: A filter cartridge has a fluid-permeable support body formed externally with ribs and is closely surrounded by a "folded" (e.g. corrugated) sheath of sintered material. The support body may likewise be formed of sintered material and preferably the sheath and support body are sintered together.
    Type: Grant
    Filed: August 10, 1976
    Date of Patent: February 7, 1978
    Assignee: Sintermetallwerk Krebsoge GmbH
    Inventor: Rainer Rohlig
  • Process for making metallic, molded composite bodies
    Patent number: 4032335
    Abstract: A process for producing composite bodies consisting of discrete particles, embedded in a metallic embedding material, in which the particles are positioned relative to the embedding material and the resulting composite is subjected to isostatic compression at pressures which suffice to cause the particles to be embedded.
    Type: Grant
    Filed: November 21, 1975
    Date of Patent: June 28, 1977
    Assignee: Sintermetallwerk Krebsoege GmbH
    Inventors: Gerhard Zapf, Lothar Albano-Muller, Horst Kiethe, Rainer Rohlig