Patents by Inventor July R. Zeldin

July R. Zeldin 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).

  • Patent number: 5448880
    Abstract: In the spinning unit of a centrifugal spinning machine the yarn conduct (4, 5) mounted between the revolving tube (2) and the yarn spreader (8) is designed so as to open on the side of the rewinding unit consisting of a winding drum (17) and a cartridge holder (18). The yarn conduct opens without displacement of the yarn (28) from its longitudinal axis. This allows to reduce the friction of the yarn (28) against the wall of the yarn conduct (4, 5) during the spinning process and to reduce the friction of the yarn (28) against the wall and the upper end of the spreader (8) during the rewinding process, as well as to bring the rewinding unit closer to the spinning unit.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: September 12, 1995
    Assignee: Nauchno-Proizvodstvennoe Obschestvo s Ogranichennoi Otvetstvennostju "Test"
    Inventors: Evgeny R. Savinov, July R. Zeldin
  • Patent number: 4158128
    Abstract: The roller comprises a core and a shell secured to said core. The shell is made up of two coaxial pipes, i.e. an inner pipe secured to the core in the middle and an outer pipe fastened to the inner pipe in the middle and at the ends. This allows the shell to be made of small-diameter thin-walled pipes thus reducing the roller deflection and decreasing considerably the weight both of the roller proper and of the equipment utilizing said roller.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: June 12, 1979
    Assignee: Ivanovsky Nauchno-Issledo-Valetelsky Experimentalnokonstruktorsky Mashinostroitelny Institut
    Inventors: Valery N. Evdokimov, July R. Zeldin, Vladimir A. Kuznetsov