Patents by Inventor Brian W. Pahl

Brian W. Pahl 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).

  • Filtration system and seal assembly
    Patent number: 7334688
    Abstract: A filtration system includes a filter medium that has two side edges. The filter medium is moveable in a longitudinal direction, and at least a segment of the filter medium is used to filter a fluid. Seals are used to seal the filter medium segment's side edges, and the seals are moveable with the filter medium in the longitudinal direction. Consequently, the seal may not need to be raised or deflated during indexing of the filter medium. Additionally, the indexing of the filter medium does not create wear on the filter medium and seal and does not cause distortion or tear of the filter medium.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: February 26, 2008
    Assignee: Mann & Hummel GmbH
    Inventors: Brian W. Pahl, Stephen Haub
  • Filter bypass monitoring system
    Patent number: 7152745
    Abstract: A method and apparatus for sealing the opposed side edges of a fluid treating belt filter (3) by employing an inflatable elastic tube (18). Opposed sealing surfaces are spaced apart from each other defining a gap there between which can be brought into sealing relationship by activation of the tube (18). The tube (18) being tested prior to and during sealing. Fluid that bypasses the seal are collected for rycycle.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: December 26, 2006
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventors: Brian W. Pahl, Frank M. Croket, Richard L. Duncum
  • Overhead return piping system
    Patent number: 6911142
    Abstract: An apparatus and method for circulating coolant liquid between machine tools and a coolant filtering unit through an overhead return line. A small stream of clean coolant is diverted to a flush tank and the tank is pressurized, e.g., with compressed air. Periodic release of the pressurized liquid from the flush tank through the overhead return line flushes deposited chips and other sediments from the return line.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: June 28, 2005
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventors: Brian W. Pahl, Richard Comer
  • Filter bypass monitoring system
    Publication number: 20040035767
    Abstract: A method and apparatus for sealing the opposed side edges of a fluid treating belt filter (3) by employing an inflatable elastic tube (18). Opposed sealing surfaces are spaced apart from each other defining a gap there between which can be brought into sealing relationship by activation of the tube (18). The tube (18) being tested prior to and during sealing. Fluid that bypasses the seal are collected for rycycle.
    Type: Application
    Filed: August 12, 2003
    Publication date: February 26, 2004
    Inventors: Brian W. Pahl, Frank M. Croket, Richard L. Duncum
  • Overhead return piping system
    Publication number: 20030183562
    Abstract: An apparatus and method for circulating coolant liquid between machine tools and a coolant filtering unit through an overhead return line. A small stream of clean coolant is diverted to a flush tank and the tank is pressurized, e.g., with compressed air. Periodic release of the pressurized liquid from the flush tank through the overhead return line flushes deposited chips and other sediments from the return line.
    Type: Application
    Filed: March 28, 2003
    Publication date: October 2, 2003
    Applicant: Filterwerk Mann & Hummel GmbH
    Inventors: Brian W. Pahl, Richard Comer