Patents by Inventor Dennis R. Sweat

Dennis R. Sweat 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).

  • Fitting for flexible tubing
    Patent number: 6899355
    Abstract: An improved fitting having an improved flexible tubing tip to connect to flexible tubing, e.g., FUNNY PIPE brand polyethylene pipe, used for sprinkling systems and other fluid delivery systems. According to one aspect of the present invention, one or more annular barbs are positioned at or toward the back of the portion of the fitting inserted into the flexible tubing, with a threaded or spiral or helix portion being positioned at the front of the portion of the fitting inserted into the flexible tubing. According to another aspect of the present invention, the threaded or spiral or helix portion of the fitting is slightly tapered to facilitate insertion into the flexible tubing. According to yet another aspect of the present invention, a double helix spiral thread is used.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: May 31, 2005
    Assignee: Lasco Fittings, Inc.
    Inventors: Donald J. Klein, Dennis R. Sweat
  • Fitting for flexible tubing
    Publication number: 20020167166
    Abstract: An improved fitting having an improved flexible tubing tip to connect to flexible tubing, e.g., FUNNY PIPE brand polyethylene pipe, used for sprinkling systems and other fluid delivery systems. According to one aspect of the present invention, one or more annular barbs are positioned at or toward the back of the portion of the fitting inserted into the flexible tubing, with a threaded or spiral or helix portion being positioned at the front of the portion of the fitting inserted into the flexible tubing. According to another aspect of the present invention, the threaded or spiral or helix portion of the fitting is slightly tapered to facilitate insertion into the flexible tubing. According to yet another aspect of the present invention, a double helix spiral thread is used.
    Type: Application
    Filed: April 8, 2002
    Publication date: November 14, 2002
    Inventors: Donald J. Klein, Dennis R. Sweat