Patents by Inventor William M. Angle

William M. Angle 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).

  • Corrugated pipe fabricator and installer device and methods of making and using the same
    Patent number: 4283160
    Abstract: The present invention relates to a corrugated pipe fabricator and installer which in its preferred embodiment comprises a conventional mole plow modified to the extent that a sheet of corrugated material which is mounted on a spool mounted on the frame carrying the mole is fed to a rotating shaping cylinder operably mounted coaxially with the mole. The corrugated material is fed at an appropriate angle and forms corrugated pipe in the proccess which is dispensed into the channel formed by the mole.
    Type: Grant
    Filed: March 7, 1979
    Date of Patent: August 11, 1981
    Inventor: William M. Angle
  • Underground irrigation devices and methods of making and using the same
    Patent number: 4010298
    Abstract: A perforated pipe method of making a perforated pipe suitable for subsurface irrigation laterals by forming indentations and perforations in indentations of sheet material then rolling the sheet material into a tube or pipe.
    Type: Grant
    Filed: December 3, 1975
    Date of Patent: March 1, 1977
    Inventor: William M. Angle