Patents by Inventor MaryAnn Clarke

MaryAnn Clarke 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).

  • Method for making a grooved spacer for a telecommunications cable
    Patent number: 6171526
    Abstract: A calibration apparatus and method for making a grooved plastic spacer for a slotted core telecommunications cable. The method includes attaching a calibration apparatus having helically shaped calibration members to an extrusion die. The calibration members are inserted into respective grooves of the spacer so that, as the spacer exits from the die, the calibration members maintain the shape of the grooves until the spacer is sufficiently cooled.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: January 9, 2001
    Assignee: Siecor Corporation
    Inventors: Warren W. McAlpine, MaryAnn Clarke
  • Slotted core telecommunications cable
    Patent number: 6066798
    Abstract: A slotted core telecommunications cable includes a spacer made of plastic having a melt flow index equal to or greater than 0.65 g/10 min. Each spacer rib has a longitudinally extending base between adjacent groove corners whose thickness does not exceed about 1.3 mm.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 23, 2000
    Assignee: Siecor Corporation
    Inventors: Warren W. McAlpine, MaryAnn Clarke
  • Apparatus and method for making a grooved spacer for telecommunications cable
    Patent number: 5830516
    Abstract: An apparatus and method for making a grooved plastic spacer for a slotted core type telecommunications cable includes a helically shaped calibration member inserted into each groove after extrusion of the spacer to maintain the shape of the groove until it is sufficiently cooled. A telecommunications cable made according to the method includes a spacer made of plastic having a melt flow index equal to or greater than 0.65 g/10 min.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: November 3, 1998
    Assignee: Siecor Corporation
    Inventors: Warren W. McAlpine, MaryAnn Clarke