Patents by Inventor Petr Velechovsky

Petr Velechovsky 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).

  • Device for automatic removal of mispicked weft
    Patent number: 5060699
    Abstract: A device for automatically removing a mispicked weft on a weaving machine. A hook fixed to a rotary shaft is rotated to raise the weft off the woven fabric and between two rotatable discs. A holding nozzle supported on the hook blows air against the hook to hold the lifted web in the hook. The rotatable discs include a relatively stationary and relatively axially moveable disc. After the hook draws the web between them, the discs are moved together and when they rotate they pull on the weft. A servomotor controls the hook moving shaft.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: October 29, 1991
    Assignee: Elitex Liberec
    Inventor: Petr Velechovsky
  • Brush device for removing a beat-up weft
    Patent number: 5022440
    Abstract: A device for removing an inserted-and-beat-up weft on weaving machines employs a rotary stripping brush with agitation hairs and also tangentially-oriented feed jets situated on an exterior periphery of the brush.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: June 11, 1991
    Assignee: Elitex Koncern Textilniho Strojirenstvi
    Inventor: Petr Velechovsky
  • Mispick removal
    Patent number: 4989645
    Abstract: A device for removing an incorrectly inserted weft on a jet loom includes nozzles, a scissor locking device, and a suction device operated in response to signals from sensors sensing the position of the weft. The incorrectly inserted weft picking length is removed in the shape of an evolving loop in the direction towards the shed end side by a pull exerted on the whole subsequent picking length of the weft.
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: February 5, 1991
    Assignee: Elitex koncern textilniho strojirenstvi
    Inventor: Petr Velechovsky