Patents by Inventor James G. Johnston

James G. Johnston 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: 5018870
    Abstract: The apparatus includes a frame in which a vessel is mounted. Water is delivered into the vessel through one inlet, polymer is delivered into the vessel through a second inlet, and a further liquid is delivered into the vessel through a further inlet. A pulsating pump delivers the polymer to the vessel and a continuously operated pump delivers the further liquid into the vessel. Either pump can be energized separately or both pumps can be energized depending upon the situation. For example, the polymer pump is energized when it is desired to deliver an emulsion polymer to the vessel and the other pump is energized when one wants to deliver a solution polymer.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: May 28, 1991
    Assignee: Stranco, Inc.
    Inventors: Carl L. Brazelton, Troy C. Litherland, James G. Johnston
  • Patent number: 4920519
    Abstract: The apparatus includes a frame in which a vessel is mounted. Water is delivered into the vessel through one inlet, polymer is delivered into the vessel through a second inlet, and a further liquid is delivered into the vessel through a further inlet. A pulsating pump delivers the polymer to the vessel and a continuously operated pump delivers the further liquid into the vessel. Either pump can be energized separately or both pumps can be energized depending upon the situation. For example, the polymer pump is energized when it is desired to deliver an emulsion polymer to the vessel and the other pump is energized when one wants to deliver a solution polymer.
    Type: Grant
    Filed: October 3, 1985
    Date of Patent: April 24, 1990
    Assignee: Stranco, Inc.
    Inventors: Carl L. Brazelton, Troy C. Litherland, James G. Johnston
  • Patent number: 4575254
    Abstract: A mounting apparatus for a transit mixer support frame and pedestals including flexure joints and rotational joints. The flexure joints allow the front of the front pedestal and the back of the rear pedestal to move both vertically and laterally in response to conditional and dynamic loading of the transit mixer frame. The back of the front pedestal and the front of the rear pedestal are connected to the transit mixer frame through rotational joints. The rotational joints include support tubes extending transversely to the frame. Journal bearing portions are connected to the frame and fitted about the support tubes. The preferred embodiment of flexure joints utilize spring loaded bolts on the front of the front pedestal and the back of the rear pedestal. A second embodiment utilizes a transverse member with an oversized slot. A pin is connected to the pedestal and may move longitudinally and laterally within the slot.
    Type: Grant
    Filed: April 4, 1984
    Date of Patent: March 11, 1986
    Assignee: Challenge-Cook Bros., Incorporated
    Inventor: James G. Johnston