Patents by Inventor Carl G. Cervin

Carl G. Cervin 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).

  • Work facilitating apparatus for conveying building material from a higher to a lower level
    Patent number: 4303363
    Abstract: An apparatus having an upper frame with a depending, telescopically elongatable and shortenable suspended structure for supporting at the lower end thereof a working platform in a converter or like metallurgical container, the upper frame being arranged to be supported at the upper end of the converter with the suspended structure extending down through an opening at the upper end of the converter. The apparatus has an endless conveyor which includes a vertical conveyor part extending from the upper frame to a point above the working platform, and a horizontal or inclined conveyor part situated outside the converter and the upper frame, the horizontal or inclined conveyor part permitting, upon elongation or shortening, shortening and elongation, respectively, of the vertical part of the endless conveyor.
    Type: Grant
    Filed: October 24, 1978
    Date of Patent: December 1, 1981
    Assignee: Cervinter AB
    Inventor: Carl G. Cervin