Patents by Inventor Donald William Van Doorn

Donald William Van Doorn 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).

  • Publication number: 20170283991
    Abstract: An apparatus for cleaning trash from cotton lint utilizes a combing cylinder having a plurality of teeth covering its surface and extending therefrom in a manner to release the cotton lint to a cleaning cylinder. The combing cylinder surface moves slower than the cleaning cylinder to comb the lint as it is delivered to the cleaning cylinder. Means are provided to vary the speed of the combing cylinder to match the lint processing parameters, including negating lint combing all together.
    Type: Application
    Filed: March 31, 2016
    Publication date: October 5, 2017
    Applicant: Lummus Corporation
    Inventor: Donald William Van Doorn
  • Patent number: 8898863
    Abstract: A reclaimer cylinder for use in reclaiming cotton seeds containing spinnable lint from partially ginned cotton seeds utilizes channel saws mounted axially on a cylindrical body with axially closely spaced teeth that virtually eliminate the variation in likelihood the teeth will fail to grasp the fibers present on such cotton seeds. Triangular grid bars facilitate removal of fully ginned seeds that are not entrained in fibers of other seeds.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: December 2, 2014
    Assignee: Lummus Corporation
    Inventor: Donald William Van Doorn
  • Publication number: 20140090207
    Abstract: A reclaimer cylinder for use in reclaiming cotton seeds containing spinnable lint from partially ginned cotton seeds utilizes channel saws mounted axially on a cylindrical body with axially closely spaced teeth that virtually eliminate the variation in likelihood the teeth will fail to grasp the fibers present on such cotton seeds. Triangular grid bars facilitate removal of fully ginned seeds that are not entrained in fibers of other seeds.
    Type: Application
    Filed: October 2, 2012
    Publication date: April 3, 2014
    Applicant: Lummus Corporation
    Inventor: Donald William Van Doorn
  • Patent number: 7779514
    Abstract: An apparatus for cleaning foreign matter from separated tufts of fiber uses a revolving open reel type structure mounted within a porous housing to separate a conveying air stream from tufts of fiber conveyed thereby and deliver the tufts to a toothed cleaning cylinder which passes beneath a plurality of cleaning bars. The open reel utilizes brush like outer surfaces to sweep tufts of fiber from the housing back into the air stream adjacent the cleaning cylinder.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: August 24, 2010
    Assignee: Lummus Corporation
    Inventor: Donald William Van Doorn
  • Publication number: 20090172918
    Abstract: An apparatus for cleaning foreign matter from separated tufts of fiber uses a revolving open reel type structure mounted within a porous housing to separate a conveying air stream from tufts of fiber conveyed thereby and deliver the tufts to a toothed cleaning cylinder which passes beneath a plurality of cleaning bars. The open reel utilizes brush like outer surfaces to sweep tufts of fiber from the housing back into the air stream adjacent the cleaning cylinder.
    Type: Application
    Filed: July 7, 2008
    Publication date: July 9, 2009
    Inventor: Donald William Van Doorn
  • Patent number: 6088881
    Abstract: An apparatus for separating foreign matter from fiber tufts includes an air duct in which fiber tufts are pneumatically conveyed into the system via a high speed air stream. The air duct provides an air stream that conveys the fiber tufts with trash on to a revolving cleaning cylinder having teeth to engage the fiber tufts at a velocity that is sufficient to prevent agglomeration of the fiber tufts on a cylinder. The fiber tufts and trash thereby engage a separating means without agglomeration of the fiber tufts. The fiber tufts and trash further engage a streamer plate and grid bars to separate the trash from the fiber tufts such that the clean fiber tufts are distributed to a lint flue. The apparatus may further include a perforated cylinder in close proximity with the revolving cleaning cylinder that allows air to flow there-through, but that prevents penetration of the perforated cylinder surface by the desired fiber tufts.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: July 18, 2000
    Assignee: Lummus Corporation
    Inventors: Donald William Van Doorn, James Brown Hawkins