Patents Assigned to Wardwell Braiding Machine Company
  • Patent number: 7270043
    Abstract: A Powered Lower Bobbin Feed (“PLBF”) system is disclosed for improving the operation of deflector type rotary braiding machines, such as the Wardwell Rapid Braider. The PLBF eliminates or reduces the impulsive tension spikes set up by the deflection and feed process in current rotary braiding machines by uniquely controlling the lower bobbin filament feed. These tension spikes result from: the rapid rotational acceleration and deceleration required of the lower bobbin as a result of the feed process; the lever arm tension control and bobbin ratchet mechanism; and the shape of the filament deflector surface. Such failure limits the operating speed of rotary braiding machines, the minimum size of filament that can be braided effectively, or the ability to maintain the quality of the braid produced. By eliminating or reducing these spikes, the PLBF therefore can increase the working speed of circular braiding machines and improve the uniformity of braided filaments generated by such machines at a given speed.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: September 18, 2007
    Assignee: Wardwell Braiding Machine Company
    Inventors: Walter M. Presz, Jr., Stanley Kowalski, III
  • Patent number: 5247184
    Abstract: Photoelectric sensing apparatus is operative for sensing the absence of filament at a particular point on a supply bobbin wherein several strands of filament will still be present on the bobbin. The sensing apparatus includes a light source which directs an angled photoelectric beam at a sensing point near the center of the bobbin and a light sensor which detects reverse reflections of the beam. If there is filament present at the sensing point, the beam will reversely defect off the round surface of the filament back to the light sensor. If there is no filament present at the sensing point, the beam deflects off the exposed core of the bobbin away from the light sensor in a different direction. Electronics means are provided which cooperate with the sensing apparatus to automatically shut-down the machine pursuant to absence of filament at said sensing point.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: September 21, 1993
    Assignee: Wardwell Braiding Machine Company
    Inventor: Mark E. Kimball
  • Patent number: 5158530
    Abstract: A method of applying an orthopedic cast to an injured body portion consisting of braiding a tubular cast, in situ, around the injured body portion. A somewhat modified conventional braiding machine is operative for applying the tubular braid of fibrous casting yarns around the injured body portion, to form a braided cast which conforms to the shape of the injured body portion. The braided cast is then coated with a matrix material, which provides the necessary rigidity to the cast, yet allows the cast to breathe.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: October 27, 1992
    Assignee: Wardwell Braiding Machine Company
    Inventor: Jonathan R. Conklin
  • Patent number: D356096
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: March 7, 1995
    Assignee: Wardwell Braiding Machine Company
    Inventors: Michael Barros, Charles E. Kay