Patents Examined by Isreal Izaguirre
  • Patent number: 5271171
    Abstract: A stretching frame for a fabric material provides for spring mounting of the four frame sides. The frame sides are tubular. At each corner of the frame is a bracket which slides within the adjacent frame tubes. A tensioning device at each end of each of the frame sides may be set to provide an appropriate urging force by tensioning a spring. Each side has a slot for insertion of the fabric edge and a locking rod to hold the fabric edge in place within the slot. The frame may be used for a range of fabric sizes by changing spring length or characteristic used for tension development. In use as a silk-screen, the side forces applied to the fabric during the printing stroke is taken up by the springs such that a minimal amount of distortion is experienced by the fabric and stencil thereon.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: December 21, 1993
    Inventor: David C. Smith