Patents by Inventor Harry M. Yousefnia

Harry M. Yousefnia 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).

  • Track joint sealing assembly for sealing a track joint in a track chain
    Patent number: 6105969
    Abstract: A track seal assembly (174) adapted to seal a track joint (172) includes a track link and a ceramic seal member (186). The track seal further includes an elastomeric member (176) positioned between the track link and the ceramic seal member (186). The track seal (174) further includes a bushing (184) having a ceramic end face (187). The end face (87) of the bushing defines a ceramic bushing face (187) that interfaces with the ceramic seal member (186) so as to form a seal interface.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: August 22, 2000
    Assignee: Caterpillar Inc.
    Inventors: Peter W. Anderton, Michael H. Haselkorn, William A. Holt, Jerry A. Metz, Daniel L. Mikrut, Kenneth R. Watts, Harry M. Yousefnia
  • Track joint sealing assembly for sealing a track joint having ceramic and elastomeric seal portions
    Patent number: 5826884
    Abstract: A track seal assembly adapted to seal a track joint includes a track link and a first ceramic seal member. The track seal further includes a first elastomeric member positioned between the track link and the first ceramic seal member. The track seal further includes a bushing having an end face. The track seal also includes a second ceramic seal member secured to the end face of the bushing, wherein (1) the first ceramic seal member contacts the second ceramic seal member so as to form a seal interface, (2) the end face of the bushing has a counter bore defined therein, and (3) the second ceramic seal member is positioned within the counter bore of the bushing.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: October 27, 1998
    Assignee: Caterpillar Inc.
    Inventors: Peter W. Anderton, Michael H. Haselkorn, William A. Holt, Jerry A. Metz, Daniel L. Mikrut, Kenneth R. Watts, Harry M. Yousefnia