Patents by Inventor Dario Sanches Manha

Dario Sanches Manha 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).

  • Manufacture process of coupling handle for coupling the drilling rod in the mandrel of blast furnace taphole drill
    Publication number: 20010004792
    Abstract: The invention proposes a manufacturing process of handle (6) for coupling the drilling rod (5) in the mandrel (3) of the drilling machine (2). Said process contemplates the handle (6) manufacture by means of a forming process of tubes (10) and (12) with inside diameters (Di) and cross sections compatible with both the cross section and outside diameter of the drilling rod (5); the tubes are subsequently cut in sections (Cn) and (An), thus producing the locking cleat (7) and the extended ring (9), respectively, which are then joined by means of welding so as to form the handle (6).
    Type: Application
    Filed: December 20, 2000
    Publication date: June 28, 2001
    Inventors: Jose de Sousa Carvalho, Dario Sanches Manha