Patents by Inventor David R. Eastham

David R. Eastham 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).

  • Bearings
    Patent number: 5770323
    Abstract: Bearings are described having composite overlay coatings. The composite overlay coating comprises an electro co-deposited soft metallic matrix having incorporated therein from 0.05 to 2 wt % of a hard metal oxide, said material exhibiting a Vickers hardness (Hv) of from at least 300 to in excess of 600.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: June 23, 1998
    Assignee: T & N Technology Limited
    Inventors: Charan P. S. Johal, David R. Eastham, Alan D. Pope
  • Bearings having an overlay coating containing dispersed phase of a second material
    Patent number: 5209578
    Abstract: Bearings having an overlay (14) deposited by cathodic sputtering. In one example the overlay comprises an aluminum matrix (22) containing a dispersed phase (24) of tin. The overlay may contain a relatively low content of tin adjacent the interface (18) with the substrate (10;12) rising to a relatively high content at the surface. The surface may comprise a layer (26) of substantially pure tin to act as a sacrificial overlay during initial running of the bearing.
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: May 11, 1993
    Assignee: T & N Technology Limited
    Inventors: David R. Eastham, Alan D. Pope
  • Method for etching piston rings
    Patent number: 4830719
    Abstract: A method for the etching of chromium-coated piston rings comprises the steps of producing relative movement and rubbing contact between the chromium-coated surface of a piston ring which is anodic and a cathode having a porous material on the rubbing surface thereof, supplying an electrolyte to the porous material between the anodic ring surface and the cathode, establishing an electrical potential therebetween and supplying an electrical current for a period of time during the relative movement.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: May 16, 1989
    Assignee: AE PLC
    Inventors: David R. Adams, Johnathan D. Philby, Alan D. Pope, David F. Spence, David R. Eastham
  • Tin-cobalt bearing overlay alloys
    Patent number: 4795682
    Abstract: Alloys of the type known as overlays for bearings are described. An overlay for a bearing comprises between 0.5 and 15 wt % of cobalt the balance being tin apart from incidental impurities.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: January 3, 1989
    Assignee: AE PLC
    Inventors: Michael Turner, John K. Dennis, David R. Eastham
  • Plain bearings and a method for manufacturing plain bearings
    Patent number: 4645360
    Abstract: A plain bearing comprising a metal backing, an aluminium based bearing alloy layer and a sacrificial overlay of pure tin applied directly to the bearing material without a nickle interlayer. The bearing alloy comprises by weight, 1 to 11% silicon, 8 to 35% tin, 0.2 to 2% copper with the balance being aluminium.
    Type: Grant
    Filed: December 18, 1985
    Date of Patent: February 24, 1987
    Assignee: AEPLC
    Inventors: Barry J. Eastwood, David R. Eastham