Patents by Inventor Ernest W. Landen

Ernest W. Landen 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).

  • Bearing having an array of microasperities
    Patent number: 4323401
    Abstract: A bearing having a generally flat planer surface of pearlite, and an array of microasperities of martensite on the planer surface, each microasperity including a gently sloping front surface in relation to the direction of movement of the bearing and a sharply sloping rear surface in relation to such direction of movement. A pulsed laser beam or other heat source is focussed on the bearing to produce the array with microasperities of controlled size and shape.
    Type: Grant
    Filed: May 13, 1977
    Date of Patent: April 6, 1982
    Assignee: Caterpillar Tractor Co.
    Inventors: William H. Belke, Joseph C. Hafele, Ernest W. Landen, Thomas J. Richards
  • Hydraulically limited fuel injection nozzle
    Patent number: 4181144
    Abstract: A hydraulically limited fuel injection nozzle includes a lift control washer disposed about an elongated check valve stem so that the washer cooperates with a surrounding sleeve when acted upon by a pressure difference caused by fluid flow to control lift of the check valve. The arrangement moves the main flow restriction upstream of check valve.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: January 1, 1980
    Assignee: Caterpillar Tractor Co.
    Inventor: Ernest W. Landen
  • Corpuscular energy beam produced microasperities
    Patent number: 4047984
    Abstract: A method and apparatus for producing microasperities for enhancing lubrication is provided. A pulsed laser beam or other heat source having high resolution with respect to time and space is focused onto a surface such as a thrust bearing surface to produce an array of microasperities of controlled size, shape and density. The staggered ramp shaped asperities produce an enhanced lubrication effect.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: September 13, 1977
    Assignee: Caterpillar Tractor Co.
    Inventors: William H. Belke, Joseph C. Hafele, Ernest W. Landen, Thomas J. Richards