Patents Assigned to L&N Metallurgical Products Co.
  • Refractory sheath for sensors
    Patent number: 5709474
    Abstract: There is provided a resin-silica sleeve or sheath for a sensor. The sheath has coating layer applied to its outer surface to improve the mechanical fracture strength and abrasion resistance of the sheath. The sheath, preferably, includes an inner layer or core and a non-reactive layer disposed about the inner layer, wherein the coating layer is disposed about the non-reactive layer.
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: January 20, 1998
    Assignee: L&N Metallurgical Products Co.
    Inventors: David James Richardson, Harry G. Clauss, Jr.