Patents by Inventor Lawrence Dowling

Lawrence Dowling 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).

  • Process for accessing underground pressurized gas main
    Patent number: 8720466
    Abstract: A process is provided for accessing an underground pressurized gas main for retirement of replacement of the connection of a gas service pipe thereto. A gas main fixture that has a service tee adaptor and a pressurized chamber connected thereto is mounted onto the gas main with the tee adaptor above a tee plug on the gas service pipe. The chamber is closed against gas discharge and the tee plug is unscrewed from the gas service pipe while the pressure chamber is closed. The tee plug is removed through the service tee adapter and pressure chamber while minimizing gas discharged to atmosphere. The plug hole is preferably reamed through the pressure chamber while the chamber is closed to atmosphere, tapped for a straight fine thread, and a main plug with the fine thread is screwed into the tapped hole while limiting its depth of engagement.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: May 13, 2014
    Assignee: Tellus Underground Technologies, Inc.
    Inventors: Frank Russo, Robert Bentzoni, Lawrence Dowling, Stephen Karner
  • Process for Accessing Underground Pressurized Gas Main
    Publication number: 20140041732
    Abstract: A process is provided for accessing an underground pressurized gas main for retirement of replacement of the connection of a gas service pipe thereto. A gas main fixture that has a service tee adaptor and a pressurized chamber connected thereto is mounted onto the gas main with the tee adaptor above a tee plug on the gas service pipe. The chamber is closed against gas discharge and the tee plug is unscrewed from the gas service pipe while the pressure chamber is closed. The tee plug is removed through the service tee adapter and pressure chamber while minimizing gas discharged to atmosphere. The plug hole is preferably reamed through the pressure chamber while the chamber is closed to atmosphere, tapped for a straight fine thread, and a main plug with the fine thread is screwed into the tapped hole while limiting its depth of engagement.
    Type: Application
    Filed: August 8, 2012
    Publication date: February 13, 2014
    Applicant: TELLUS UNDERGROUND TECHNOLOGY, INC.
    Inventors: Frank Russo, Robert Bentzoni, Lawrence Dowling, Stephen Karner
  • Door warning system
    Patent number: 6292100
    Abstract: A door warning system comprising a sensor adapted to sense the presence of persons immediately adjacent a first side of a swinging door; an audio or visual alarm responsive to the sensor adapted to advise a person on a second side of the door being opposite the first side of the presence of a person on the first side of the door.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: September 18, 2001
    Assignee: D2 Technologies Pty Ltd.
    Inventor: David Lawrence Dowling