Patents by Inventor Cary L. Fields

Cary L. Fields 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: 4071919
    Abstract: A cleaning apparatus for waste shafts has a cleaning head with peripheral brushes fixed to the head, a vibrator mounted on the head vibrating the head and thereby the brushes, a lower spray head below the brushes for applying a cleaning solution, and an upper spray head above the brushes for applying an insecticide. The cleaning head is lowered down a waste shaft by a hose containing two fluid paths, each connected to a spray head, and containing electric wires connected to the vibrator. A cart containing water, soap or detergent, insecticide, and scent tanks has metering pumps delivering fluids from the tanks through a rotary fitting to the hose which is mounted on a motor driven reel to lower the head. The hose passes over a roller clamped within an opening in the shaft. The cart may contain batteries for its operation and electronic controls and recording devices.
    Type: Grant
    Filed: February 22, 1977
    Date of Patent: February 7, 1978
    Inventors: Cary L. Fields, John A. Fernandez, Salvatore Cortese