Patents by Inventor Karen Raab

Karen Raab 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).

  • Patent number: 8347504
    Abstract: A method of manufacturing a fuel injector having high-flow orifices in its tip includes removing a bulb from a fuel injector tip having at least one spray orifice with a first diameter, and friction welding a slug to the fuel injector tip, including forming a fused interface of material of the slug and material of the fuel injector tip. The method further includes modifying the slug subsequent to friction welding the slug to the fuel injector tip, including forming a new bulb from the slug having at least one spray orifice therein with a different diameter than that of the removed bulb. A remanufactured fuel injector, and fuel injector tip, includes an injector tip body having a first tip portion of a first material and a second tip portion of a material compatible for friction welding with the first material.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: January 8, 2013
    Inventors: Karen Raab, James D. Sparks, Scott A. Johnston, Sami El-Sayed
  • Publication number: 20110073681
    Abstract: A method of manufacturing a fuel injector having high-flow orifices in its tip includes removing a bulb from a fuel injector tip having at least one spray orifice with a first diameter, and friction welding a slug to the fuel injector tip, including forming a fused interface of material of the slug and material of the fuel injector tip. The method further includes modifying the slug subsequent to friction welding the slug to the fuel injector tip, including forming a new bulb from the slug having at least one spray orifice therein with a different diameter than that of the removed bulb. A remanufactured fuel injector, and fuel injector tip, includes an injector tip body having a first tip portion of a first material and a second tip portion of a material compatible for friction welding with the first material.
    Type: Application
    Filed: December 6, 2010
    Publication date: March 31, 2011
    Applicant: Caterpillar Inc.
    Inventors: Karen Raab, James D. Sparks, Scott A. Johnston, Sami El-Sayed
  • Patent number: 7866574
    Abstract: A method of manufacturing a fuel injector having high-flow orifices in its tip includes removing a bulb from a fuel injector tip having at least one spray orifice with a first diameter, and friction welding a slug to the fuel injector tip, including forming a fused interface of material of the slug and material of the fuel injector tip. The method further includes modifying the slug subsequent to friction welding the slug to the fuel injector tip, including forming a new bulb from the slug having at least one spray orifice therein with a different diameter than that of the removed bulb. A remanufactured fuel injector, and fuel injector tip, includes an injector tip body having a first tip portion of a first material and a second tip portion of a material compatible for friction welding with the first material.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: January 11, 2011
    Assignee: Caterpillar Inc.
    Inventors: Karen Raab, James D. Sparks, Scott A. Johnston, Sami El-Sayed
  • Publication number: 20080173733
    Abstract: A method of manufacturing a fuel injector having high-flow orifices in its tip includes removing a bulb from a fuel injector tip having at least one spray orifice with a first diameter, and friction welding a slug to the fuel injector tip, including forming a fused interface of material of the slug and material of the fuel injector tip. The method further includes modifying the slug subsequent to friction welding the slug to the fuel injector tip, including forming a new bulb from the slug having at least one spray orifice therein with a different diameter than that of the removed bulb. A remanufactured fuel injector, and fuel injector tip, includes an injector tip body having a first tip portion of a first material and a second tip portion of a material compatible for friction welding with the first material.
    Type: Application
    Filed: January 22, 2007
    Publication date: July 24, 2008
    Inventors: Karen Raab, James D. Sparks, Scott A. Johnston, Sami El-Sayed
  • Publication number: 20060191406
    Abstract: A cylinder rod with wear-resistant surface markings is provided. The cylinder rod may include a rod substrate, a thermal-spray coating disposed on a surface of the substrate, and one or more surface markings disposed on the coating at predetermined locations along the length of the cylinder rod.
    Type: Application
    Filed: February 28, 2005
    Publication date: August 31, 2006
    Inventors: Trent Kucher, Karen Raab, Xiangyang Jiang
  • Publication number: 20060022411
    Abstract: A bushing includes an interior surface, an exterior surface, a first end, and a second end. An end face forms at least part of each of the first end and the second end. At leaset one of the exterior surface and the end face includes a sealing surface formed at least in part of a coating including a material having a hardness level greater than about 1200 Knoop. The sealing surface has a thickness greater than about 35 microns and an average roughness (Ra) less than about 0.25 micron. In one embodiment, the bushing may be used on an endless track for a track-type work machine.
    Type: Application
    Filed: July 15, 2004
    Publication date: February 2, 2006
    Inventors: M. Beardsley, David Bowman, Mark Diekevers, Karen Raab, William Smith, D. Weaver