Patents by Inventor Daniel R. Arroyo

Daniel R. Arroyo 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: 4850728
    Abstract: A tool for cleaning concrete truck delivery chutes. The tool comprises an elongated handle portion having a generally disc-shaped head portion carried at one end thereof. The head portion comprises a substantially semicircular rigid plate portion extending substantially perpendicular to the handle portion and configured to conform to the inner contour of a concrete truck delivery chute. A substantially semicircular flexible portion extends perpendicularly from the handle portion substantially opposite to the rigid portion and projects forwardly at an angle of approximately 45.degree. from the plane of the rigid portion. The flexible portion is configured to conform to the inner contour of a concrete truck delivery chute and tapers radially outward to form a squeegee edge to facilitate removal of water from the chute.
    Type: Grant
    Filed: September 13, 1988
    Date of Patent: July 25, 1989
    Inventor: Daniel R. Arroyo