Patents by Inventor Charlotte A. Hatfield

Charlotte A. Hatfield 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: 5192131
    Abstract: An elongate inner tubular sleeve is slidably mounted within an outer tubular sleeve, with the inner sleeve mounting a plurality of actuator links to permit axial displacement of the inner sleeve relative to the outer sleeve, wherein the inner sleeve pivotally mounts an annular array of paddle blades at a lower distal end of the inner sleeve that are positioned exteriorly of the outer sleeve, whereupon axial displacement of the inner sleeve relative to the outer sleeve effects radial displacement of each paddle blade relative to the outer sleeve to permit a stirring thereof, with the actuator links projecting exteriorly to provide for a handle structure permitting ease of rotation of the stirring device within a container.
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: March 9, 1993
    Inventor: Charlotte A. Hatfield