Patents by Inventor David C. Eaton

David C. Eaton 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: 11062262
    Abstract: Systems, devices, and methods include an electronic scanning device, an electronic database, and an electronic inventory management device for analyzing products at a retail store in order to detect products at the retail store that are associated with mis-shipments and to adjust perpetual inventory at the retail store in view of a detected mis-shipment.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: July 13, 2021
    Assignee: Walmart Apollo, LLC
    Inventors: Greg A. Bryan, Cristy C. Brooks, Benjamin D. Enssle, David B. Brightwell, Jeffrey Kerbs, Jesse L. Eaton
  • Patent number: 5137736
    Abstract: A process for preparing the sodium or calcium salt of propionic acid, comprising fermenting with the bacterium Selenomonas ruminantium an aqueous medium containing corn steep liquor or soy peptone, lactic acid, carbon dioxide, and sodium hydroxide, calcium carbonate, or calcium hydroxide as a neutralizing agent, the said process providing a yield in the said medium of at least 1% of the salt of propionic acid.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: August 11, 1992
    Assignee: Hercules Incorporated
    Inventors: David C. Eaton, Alan Gabelman
  • Patent number: 4918914
    Abstract: A method of monitoring yarn quality in a yarn texturing process comprises measuring the velocity of the travelling yarn at two locations and comparing the measured velocities. At a first location the yarn tension is sufficient to draw out the crimp and at a second location the tension is lower such that the crimp is developed. Apparatus for performing this method comprises a measuring device to measure the peripheral speed of a driving roller which is part of a nip-feed device serving to feed a crimped yarn at the first location from a false twist device to a second heater of a false twist texturing machine. At the second location between the second heater and a third feed device of the machine is a second velocity measuring device which comprises an inlet tube, an outlet tube and two discs of brass which form spaced measuring stations spaced by an insulating body.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: April 24, 1990
    Assignee: Rieter Scragg Limited
    Inventor: David C. Eaton
  • Patent number: 4839815
    Abstract: The invention provides a method of monitoring yarn package offtake performance comprising withdrawing yarn from a package, for a predetermined period of time continuously measuring the tension of said yarn at predetermined time intervals throughout said withdrawal and updating the obtained tension distribution data with each tension measurement. The method also includes noting the maximum and minimum tensions measured and the limiting values of a range of tensions outside which range only a predetermined proportion of said measured tensions fall, and determining an offtake performance factor from said maximum, minimum and limiting values of tensions.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: June 13, 1989
    Assignee: Rieter Scragg Limited
    Inventors: David C. Eaton, Christopher J. Lawrence
  • Patent number: 4420369
    Abstract: Pulp mill bleach plant caustic extraction effluent is decolorized using a primary or other sludge from a pulp and paper mill. The sludge is acidified and mixed with the effluent. After a short incubation period, the mixture of acidified sludge and effluent is raised to at least neutral pH, causing precipitation of most of the color in the effluent. The precipitated color may then easily be separated from the liquor by any conventional clarification technique. The method avoids the consumption of large quantities of expensive reagents or high transportation costs associated with the prior art decolorization techniques used on such effluent.
    Type: Grant
    Filed: February 25, 1982
    Date of Patent: December 13, 1983
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: David C. Eaton, Thomas K. Kirk, Hou-min Chang
  • Patent number: 4151028
    Abstract: In the known process of co-use of a catechol-monophenol-formaldehyde condensation product and a "RFL" dip for bonding polyester fibres to the rubber in reinforced rubber articles, the use of the condensation product in the form of an alkanolamine salt instead of the ammonium salt, as hitherto used, leads to certain advantages. In addition to lowering a problem due to the evolution of ammonia fumes, there is on average a slight increase in bond strength and the compositions are more easily cleaned from the processing machinery used.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: April 24, 1979
    Assignee: Imperial Chemical Industries Limited
    Inventor: David C. Eaton