Patents by Inventor William Groothius

William Groothius 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: 4257289
    Abstract: A metal pipe bevelling tool has a shaft with a forward end portion on which is mounted a mandrel with movable jaws engageable with the inside of a pipe end to hold the shaft coaxial with the pipe. A tool hub is rotatably supported by a rearward end portion of the shaft, the tool hub carrying cutting tools for bevelling the end of the pipe, and also having means engageable with an auxiliary power drive for rotating the tool hub. The tool hub, and consequently the whole apparatus, is enabled to be fairly small and light by a special mounting arrangement for the cutting tools. In this arrangement, the tool hub has recesses the axes of which lie in a direction extending outwardly and forwardly from the hub, and these recesses are each provided with a tool holding sleeve having an external surface fitting closely within the respective recess and defining a central cavity of square cross section for receiving the shank of a cutting tool.
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: March 24, 1981
    Assignee: Project Construction Services Ltd.
    Inventor: William Groothius