Reinforced Fabrics Patents (Class 140/3C)
  • Patent number: 5029779
    Abstract: This invention relates to a sheet-shaped welded netting of metal at least comprising mesh-forming wires extending longitudinally of the sheet and/or mesh-forming wires extending transversely of the sheet as well as several deformed stretching wires extending longitudinally of the sheet which can stretch under tensile stress and which may or may not have the function of mesh-forming wires extending longitudinally of the sheet, the deformations in the stretching wires substantially lying in the plane of the netting and the stretching wires displaying a regular arrangement of identical patterns longitudinally of the sheet, whereby the deformation of the stretching wires is such that the ratio of the maximum dimension (B) of a mesh longitudinally of the sheet to the distance (A) between two consecutive maxima in a deformed stretching wire is at least about three, that the maxima of two adjacent stretching wires of the welded netting may or may not have the same position with respect to the longitudinal direction
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: July 9, 1991
    Assignee: N.V. Bekaert S.A.
    Inventor: Frans Bruggeman
  • Patent number: 4368761
    Abstract: A centering device is provided in a spring core mounting machine having at least one pair of clamping jaws for holding together the terminal windings of adjacent helical springs while they are being connected by threading wire helices through them, with the terminal windings of the helical springs being provided at two diametrically oppositely located portions with bent-out zones in which the spring wire extends at least approximately in a straight line and in parallelism with the opposite zone. A slide is provided which is movable in axial direction and which engages the respectively newly supplied spring at its terminal winding and presses it against the movable clamping jaw.
    Type: Grant
    Filed: September 23, 1980
    Date of Patent: January 18, 1983
    Assignee: Spuhl, AG
    Inventor: Walter Spuhl
  • Patent number: 4079500
    Abstract: Method of reinforcing concrete pipe in a rotary molding method using a wire reinforcing cage having a helical strand disposed about its exterior to resist torsional forces on the cage during molding, the cage being formed from a flat sheet.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: March 21, 1978
    Assignee: Wilbur E. Tolliver
    Inventor: Wilbur E. Tolliver