Patents Assigned to Laystall Engineering Company Limited
  • Method of treating a surface with hard particles using free running rollers
    Patent number: 6527623
    Abstract: A method of treating a surface of a component formed from a base material is described. The method comprises the steps of bringing the surface into proximity with free running rollers, the surface being moved relative to the free running rollers with a contact force in the range of 5.25 to 20.00 Newtons per mm of roller width, and introducing hard particles between the free running rollers and the surface such that at least some of the hard particles are forced into the base material of the surface by the free running rollers.
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: March 4, 2003
    Assignee: Laystall Engineering Company Limited
    Inventor: Martin Robert Bowers
  • Process for embedding hard particles in a bearing surface
    Patent number: 4125637
    Abstract: In a process for forming an extremely hard-wearing rubber or bearing surface on a metal machine part, particles of hard grit, such as carbide grit, are deliberately formed into the surface using a resiliently-loaded tool, so that the surface becomes permanently impregnated with the hard particles. During the operation the particles can conveniently be contained in a slurry that flows over the surface. After impregnation, a lapping operation is performed on the impregnated surface using a fine carbide grit.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: November 14, 1978
    Assignee: Laystall Engineering Company Limited
    Inventor: John E. Tanner