Patents by Inventor Bart Jerome Nelson

Bart Jerome Nelson 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).

  • Powder metal mixture including micronized starch
    Patent number: 7261759
    Abstract: A powder metal mixture comprises a lubricant powder conventionally used to produce powder metal parts in combination with a modified lubricant. A lubricant conventionally used to compact and sinter a chosen powder metal mixture is modified by adding to it starch particles smaller than the average metal particle, and optionally, micronized cellulose fibers in so small an amount that the modified lubricant is present in an amount less than 2% by weight of the mixture. The Hall apparent density and the Hall flow rate of a powder metal mixture made with the modified lubricant of starch or (starch+fibers) remains within the ranges deemed desirable for production of compacted powder metal parts. Using the modified lubricant in lieu of the conventional lubricant increases green strength of a part made by compacting the mixture and improves dimensional conformance.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: August 28, 2007
    Assignee: React-NTI, LLC
    Inventors: Bruce Anthony Tavares, Bart Jerome Nelson
  • Powder metal mixture including micronized cellulose fibers
    Patent number: 7150775
    Abstract: A powder metal mixture comprises a lubricant powder conventionally used to produce powder metal parts in combination with micronized cellulose fibers in an amount less than 2% by weight of the mixture. The addition of fibers with the lubricant increases green strength of a part made by compacting the mixture and improves dimensional conformance.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: December 19, 2006
    Assignee: React-NTI, LLC
    Inventors: Bruce Anthony Tavares, Bart Jerome Nelson
  • Powder metal mixture including micronized starch
    Publication number: 20040144206
    Abstract: A powder metal mixture comprises a lubricant powder conventionally used to produce powder metal parts in combination with a modified lubricant. A lubricant conventionally used to compact and sinter a chosen powder metal mixture is modified by adding to it starch particles smaller than the average metal particle, and optionally, micronized cellulose fibers in so small an amount that the modified lubricant is present in an amount less than 2% by weight of the mixture. The Hall apparent density and the Hall flow rate of a powder metal mixture made with the modified lubricant of starch or (starch+fibers) remains within the ranges deemed desirable for production of compacted powder metal parts. Using the modified lubricant in lieu of the conventional lubricant increases green strength of a part made by compacting the mixture and improves dimensional conformance.
    Type: Application
    Filed: January 14, 2004
    Publication date: July 29, 2004
    Inventors: Bruce Anthony Tavares, Bart Jerome Nelson
  • Powder metal mixture including micronized cellulose fibers
    Publication number: 20040144207
    Abstract: A powder metal mixture comprises a lubricant powder conventionally used to produce powder metal parts in combination with micronized cellulose fibers in an amount less than 2% by weight of the mixture. The addition of fibers with the lubricant increases green strength of a part made by compacting the mixture and improves dimensional conformance.
    Type: Application
    Filed: January 14, 2004
    Publication date: July 29, 2004
    Inventors: Bruce Anthony Tavares, Bart Jerome Nelson