Patents by Inventor Peter L. Barry

Peter L. Barry 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).

  • Cleaning of tubes using projectiles
    Patent number: 4898197
    Abstract: Tubes are cleaned using projectiles propelled by the more or less instantaneous release of liquid cleaning medium at high pressure acting upon one face of the projectile. Projectiles travel at a velocity of at least about 10 m sec.sup.-1 inducing a cavitation-like process to the rear of said projectile.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: February 6, 1990
    Assignee: Lacress Nominees Pty. Ltd.
    Inventors: Peter L. Barry, Robert W. Vowles
  • Method of cleaning pipes and tubes by pigging using water hammer shock waves
    Patent number: 4724007
    Abstract: Pipes or tubes, for example, in heat exchangers, can be cleaned internally using a water hammer shock wave with a relatively incompressible pig which travels at high velocity and a flushing liquid. FIG. 1 illustrates the use of launcher (14) to apply a very rapid pressure build-up by means of a liquid to one end of a pig located in a tube (11) to be cleaned.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: February 9, 1988
    Assignee: Lacress Nominees Pty. Ltd.
    Inventors: Peter L. Barry, Robert W. Vowles
  • Apparatus for cleaning pipes, tubes, and the like by launching pigs
    Patent number: 4716611
    Abstract: Pipes, tubes and the like, for example, in heat exchangers, can be cleaned internally using sonic energy, a relatively incompressible pig and a flushing liquid.The flushing liquid is supplied via a pressure outlet from a quick operating valve to one or more launchers for launching pigs. The launchers are mounted on either an x-y frame movable support or a rotary axis adapter and radially movable support for positioning the launchers with respect to the ends of the tubes to be cleaned.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: January 5, 1988
    Assignee: Lacress Nominees Pty., Ltd.
    Inventor: Peter L. Barry