Patents Assigned to Marston Palmer Limited
  • Flexible non-metallic coupling with cam follower latch mechanism
    Patent number: 5131689
    Abstract: A flexible non-metallic coupling comprising an outer ring member having an internal bore with a pair of `O` rings carrying internal inserts slidable and rotatable within the bore, each insert being secured to a pipe end by a shape memory alloy ferrule and being retained in the bore by a nut.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: July 21, 1992
    Assignee: Marston Palmer Limited
    Inventor: James I. Bates
  • Condensing surface for heat exchanger with fins arranged to drip condensate onto one side only
    Patent number: 4899808
    Abstract: A heat exchanger particularly intended for condensing vapor from a gaseous stream in which there are provided fins so disposed that condensate forming on the fins drips onto one side only of the fins below it. This reduces the deleterious effect of the build-up of a liquid layer on fins which liquid layer reduces the thermal effectiveness of the fins.
    Type: Grant
    Filed: January 6, 1988
    Date of Patent: February 13, 1990
    Assignee: Marston Palmer Limited
    Inventors: Edward J. Gregory, John Felton, Frank T. Cooper
  • Filter element using non-woven mat and multi finger separators
    Patent number: 4793922
    Abstract: A filter element in which the filtering medium is a layer of non-woven metallic fibre mat in which annular discs of filtering medium are separated by a plurality of separators, in two sets. A first set of separators includes an external peripheral wall with inwardly directed fingers, and the second set of separators includes an internal peripheral wall with externally-directed fingers. The separators are selected alternately from the first and second sets and the assembly is bonded together to form a filter assembly.
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: December 27, 1988
    Assignee: Marston Palmer Limited
    Inventor: Eric E. Morton
  • Electrode with anode active layer
    Patent number: 4515673
    Abstract: A titanium or niobium electrode substrate (which may be copper or steel cored) having on its surface a painted and fired anodically active layer for example of a platinum group metal, there being an interlayer of tantalum or an alloy containing more than 50% tantalum in metallic form between the anodically active layer and the substrate. The tantalum metal gives enhanced corrosion resistance and acid undermining resistance to titanium substrates and eases the manufacture of painted and fired niobium substrate electrodes.The electrode may be an elongate rod having longitudinally extending protuberances along the length of the rod and around the circumference, the spacing and height of the protuberances being such that a straight line connecting the peaks of two adjacent protuberances does not intersect with the body of the electrode so that the protuberances protect the anodically active coating from damage during installation and operation of the electrode.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: May 7, 1985
    Assignee: Marston Palmer Limited
    Inventor: Peter C. S. Hayfield