Patents Assigned to Sigma Tool & Machine, A Partnership of Sigma Tool & Machine Ltd.
  • Patent number: 6209722
    Abstract: A fastener strip with a grip portion, and flanges formed around the grip portion, and a membrane or membranes formed of flexible material, adhesive bonding a membrane to first sides of the flanges, with the fastener in sequential relation along the membrane and portions of a membrane bonded to second sides of the flanges, so that the membrane portions grip the flanges on both first and second side surfaces simultaneously.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: April 3, 2001
    Assignees: Sigma Tool & Machine, A Partnership of Sigma Tool & Machine Ltd., Sigma Fasteners Ltd.
    Inventor: Martin Leistner
  • Patent number: 5478002
    Abstract: A magnetic Tee-nut holder for use in a Tee-nut setting machine having a f guide channel for feeding and guiding Tee-nuts towards the end of the channel in registration with a rod for driving the endmost Tee-nut into a workpiece. The magnetic Tee-nut holder is positioned at the end of the channel for magnetically holding the endmost Tee-nut in a position in registration with the driving rod. Also disclosed is a method of magnetically holding a Tee-nut at the end of a feed guide channel of a Tee-nut setting machine, for driving by a driving rod.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: December 26, 1995
    Assignees: Sigma Tool & Machine, Partnership of Sigma Tool & Machine Ltd., Sigma Fasteners Ltd.
    Inventors: Ole Clement, Ivan J. Leko