Patents Assigned to Global Cathodic Protection, Ltd.
  • Apparatus for determining underwater potential differences employing Luggins tubulus
    Patent number: 4441980
    Abstract: Apparatus for use in determining electric potentials underwater includes Luggin tubes of small diameter which are open to the water at outer ends thereof. The outer ends are arranged at known spaced positions relative to one another. The potentials at the ends of the tubes are connected selectively via fluid in the tubes to a reference electrode. The potential at the reference electrode relative to a further electrode is measured.
    Type: Grant
    Filed: May 4, 1982
    Date of Patent: April 10, 1984
    Assignee: Global Cathodic Protection Ltd.
    Inventor: Michael A. Warne
  • Sacrificial anode assembly
    Patent number: 4284488
    Abstract: A sacrificial anode for use in cathodic protection is made in the form of a bracelet which has two parts, each of the parts has a series of anodes connected between a pair of straps and each of the straps of one of the parts is hingedly connected to a corresponding strap of the other of the parts.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: August 18, 1981
    Assignee: Global Cathodic Protection, Ltd.
    Inventors: Robert Brittain, Andrew L. Hickman