Patents by Inventor Jilji Havelka

Jilji Havelka 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).

  • Grooved rotary yarn distributor for winding conical bobbins
    Patent number: 4643372
    Abstract: Grooved rotary yarn distributor for the winding of bobbins of conical or varioconical shape, the distributor having a reversible, crossing helical groove, and a variable radius of the groove bottom, the conical and varioconical bobbins having a variable crossing angle of the wound yarn.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: February 17, 1987
    Assignee: Elitex, koncern textilniho strojirenstvi
    Inventors: Jilji Havelka, Petr Jirasko, Zdenek Koloc, Miroslav Vaclavik