Patents Assigned to J.P. Patent Holdings, L.L.C.
  • Apparatus and method for pulling cable
    Patent number: 5683073
    Abstract: A primary device placed at the upstream end of a duct and a relay device placed at an access point pull a cable through respective duct segments. The pulling speed of the primary device is controlled by an operator. The pulling speed of the relay device is variable in response to movement of the cable by the primary device to maintain equilibrium between the pulling speeds of the devices. The pulling tension exerted upon the cable by each device is monitored and discontinued upon reaching a predetermined maximum value. At the inlet to the second segment, lubricant is supplied to the cable at a quantitative rate which is proportional to the pulling speed.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 4, 1997
    Assignee: J.P. Patent Holdings, L.L.C.
    Inventor: John W. Pickrell
  • Apparatus and method for pulling cable
    Patent number: 5533711
    Abstract: A primary device placed at the upstream end of a duct and a relay device placed at an access point pull a cable through respective duct segments. The pulling speed of the primary device is controlled by an operator. The pulling speed of the relay device is variable in response to movement of the cable by the primary device to maintain equilibrium between the pulling speeds of the devices. The pulling tension exerted upon the cable by each device is monitored and discontinued upon reaching a predetermined maximum value. At the inlet to the second segment, lubricant is supplied to the cable at a quantitative rate which is proportional to the pulling speed.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: July 9, 1996
    Assignee: J.P. Patent Holdings, L.L.C.
    Inventor: John W. Pickrell