Patents by Inventor Howard J. Lang

Howard J. Lang 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).

  • Tapping fluid supply pipes
    Patent number: 4978255
    Abstract: A fluid supply pipe (1) is drilled and tapped using a saddle (2) adhered to its surface, the drilling and tapping tools being attached to the saddle. The saddle (2) comprises a sole plate (3) snugly fitting on the pipe, and an upstanding collar (4) with a through bore (20) through which the cutting and tapping tools pass. During adhering the saddle to the pipe, adhesive is prevented from entering the bore (20) by provision of a closure member (21).
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: December 18, 1990
    Inventors: John C. Gale, Howard J. Lang
  • Tapping subterranean pipes
    Patent number: 4832069
    Abstract: Subterranean service pipes, eg. water mains, are tapped by minimal excavation to expose the upper half of the main and then locating (with respect to the main) a conventional pipe-tapping device but without employing means encircling the pipe. Thus, a clamp can be used, or a saddle adhesively secured to the pipe. The clamp or saddle preferably provide means for proper orientation of the drilling and tapping tool with respect to the main.
    Type: Grant
    Filed: January 29, 1987
    Date of Patent: May 23, 1989
    Assignee: Water Research Centre
    Inventors: John C. Gale, Howard J. Lang, Charles Hurst
  • High pressure jets
    Patent number: 4583329
    Abstract: High pressure liquid jets including finely divided abrasive particles suspended therein, are produced a substantial distance (e.g. from 20 m up to 100 m or more) from the liquid and particle sources by separately pumping the liquid and the particles over the distance, and then combining the two in a venturi and delivering the mixture to a nozzle. The abrasive particles are conveyed over the distance in a carrier fluid (e.g. air) which is then separated off immediately before the particles arrive at the venturi.
    Type: Grant
    Filed: February 7, 1985
    Date of Patent: April 22, 1986
    Assignee: Water Research Centre
    Inventor: Howard J. Lang