Patents by Inventor Marian Bednarz

Marian Bednarz 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).

  • Mining roof support
    Patent number: 5685669
    Abstract: A roof support having a stabilizing-guiding system for two spaced articulated quadrilateral linkages joined by a spacer element. The stabilizing-guiding system includes two coordinating links respectively, pivotably connected at one of the ends thereof to the canopy and the bottom sprag and at their other ends the links are connected together by a connecting element. The connecting element is supported in a guideway fixed to the spacer element. Hydraulic legs are connected to the bottom sprag rearwardly of a plane bounding a walkway space for the crew on the bottom sprag.
    Type: Grant
    Filed: January 19, 1996
    Date of Patent: November 11, 1997
    Assignee: Fabryka Maszyn"Glinik" S.A.
    Inventors: Tadeusz Lewinski, Leszek Jarno, Antoni Trojan, Jerzy Moskal, Marian Bednarz, Mieczysaw Godkowicz, Jozef Belniak, Piotr Konieczny, Stanisaw Zabierowski, Stanisaw Koryga