Patents by Inventor Johnny D. Chapman

Johnny D. Chapman 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).

  • Apparatus for aligning ends of pipes
    Patent number: 5206980
    Abstract: A frame (20) which open at the bottom has supporting plates (22, 24, 26) and a bottommost support piece (28) connecting at least two support plates (22, 24, 26). The frame is designed to fit over lengths of pipes to be aligned. Two sets of (40, 41) clamps consisting of at least one clamp each are mounted on the frame (20). The sets of clamps (40, 41) are translatable with respect to one another. One set of clamps (40) engages one of the pipes (13) to be aligned. The other set of clamps (41) engages the other pipe (11) to be aligned. Once the pipes (11, 13) are engaged the facing ends are brought together by translating the sets of clamps (40, 41) toward each other. A roller (30) is affixed to one end of the frame (20) to facilitate movement of the apparatus (10) along a length of pipe.
    Type: Grant
    Filed: April 7, 1992
    Date of Patent: May 4, 1993
    Inventor: Johnny D. Chapman