Patents by Inventor John F. Booth

John F. Booth 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).

  • WELLBORE PLUG AND METHOD
    Publication number: 20130008671
    Abstract: Disclosed is a wellbore plug having a design that allows the mandrel of the plug to be made of concrete or other easy-to-drill materials. Disclosed is a wellbore plug assembly with slip and packing assemblies configured to hold the plug in place during setting and use without tensioning the mandrel, thereby allowing the mandrel to be made from easily drillable material, such as concrete.
    Type: Application
    Filed: June 22, 2012
    Publication date: January 10, 2013
    Inventor: John F. Booth
  • Method for firing ceramic products
    Patent number: 4382051
    Abstract: Clay pipes and the like are fired in a kiln through which they are conveyed by a pusher conveyer as individual articles, instead of being carried on cars or in containers. In the main firing zone of the kiln the pipes roll along a surface to maintain roundness and ensure uniform heating. In the preheating zone of the kiln the pipes are carried by carriers of the conveyer without rotating. The pipes may also be carried without rotating in the final cooling zone of the kiln.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: May 3, 1983
    Assignee: The Hepworth Iron Company Limited of Sheffield
    Inventor: John F. Booth
  • Method and apparatus for firing ceramic products
    Patent number: 4264301
    Abstract: Clay pipes and the like (3) are fired in a kiln (1) through which they are conveyed by a pusher conveyer (2, 4) as individual articles, instead of being carried on cars or in containers. In the main firing zone of the kiln the pipes (3) roll along a surface (6) to maintain roundness and ensure uniform heating. In the preheating zone of the kiln the pipes are carried by carriers (5) of the conveyer without rotating. The pipes may also be carried without rotating in the final cooling zone of the kiln.
    Type: Grant
    Filed: May 25, 1979
    Date of Patent: April 28, 1981
    Assignee: The Hepworth Iron Company Limited
    Inventor: John F. Booth