Patents by Inventor Allana Johnstone

Allana Johnstone 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).

  • Insert for a conduit
    Patent number: 8021415
    Abstract: There is disclosed an insert (2) for a conduit (4) adapted to effect helical flow in the conduit (4) comprising a longitudinally extending member having a helical formation.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: September 20, 2011
    Assignee: Tayside Flow Technologies Limited
    Inventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
  • Method for introducing an internal helical formation into a flexible tubular material
    Patent number: 7968036
    Abstract: There is disclosed a method for introducing a helical formation (11) into a flexible tubular material (12). The material (12) is supported together with a surrounding helical former (13) so as to deform the material (12) to have a helical indentation (11) corresponding to the shape of the former (13). The material (12) is then set in that configuration and the former (13) is removed.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: June 28, 2011
    Assignee: Tayside Flow Technologies Limited
    Inventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
  • Method of and apparatus for assessing the effect of a conduit section on flow characteristics of a first fluid
    Patent number: 7503226
    Abstract: A method of assessing the effect of a conduit section (11) on flow characteristics of a first fluid in a first conduit system (1). A first fluid is caused to flow through the first conduit system (1). A transverse flow parameter of the first fluid in the first conduit system (1) downstream of the conduit section (11) is detected. At least one transverse flow characteristic of the first fluid is determined from the detected transverse flow parameter. The effect of the conduit section (11) is then assessed from the determined flow characteristics.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: March 17, 2009
    Assignee: Tayside Flow Technologies Ltd
    Inventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
  • Method for introducing an internal helical formation into a flexible tubular material
    Publication number: 20080319536
    Abstract: There is disclosed a method for introducing a helical formation (11) into a flexible tubular material (12). The material (12) is supported together with a surrounding helical former (13) so as to deform the material (12) to have a helical indentation (11) corresponding to the shape of the former (13). The material (12) is then set in that configuration and the former (13) is removed.
    Type: Application
    Filed: April 10, 2008
    Publication date: December 25, 2008
    Inventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
  • Insert for a conduit
    Publication number: 20080114448
    Abstract: There is disclosed an insert (2) for a conduit (4) adapted to effect helical flow in the conduit (4) comprising a longitudinally extending member having a helical formation.
    Type: Application
    Filed: January 17, 2008
    Publication date: May 15, 2008
    Inventors: John Houston, Peter Stonebridge, John Dick, Robert Hood, Allana Johnstone, Christophe Sarran, Craig Duff
  • Insert for a conduit
    Patent number: 7331989
    Abstract: There is disclosed an insert (2) for a conduit (4) adapted to effect helical flow in the conduit (4) comprising a longitudinally extending member having a helical formation.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: February 19, 2008
    Assignee: Tayside Flow Technologies Limited
    Inventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
  • Helical formation for a conduit
    Patent number: 7185677
    Abstract: A helical formation (2) for a conduit (1). The helical formation (2) comprises an elongate member defining at least a portion of a helix, the elongate member comprising two inwardly extending portions (6, 7). The inwardly extending portions (6, 7) are spaced from each other and extend along the length of the elongate member in side-by-side relationship.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: March 6, 2007
    Assignee: Tayside Flow Technologies Limited
    Inventors: John Graeme Houston, Robert Gordon Hood, John Bruce Cameron Dick, Craig McLeod Duff, Allana Johnstone, Christophe Emmanuel Sarran, Peter Arno Stonebridge
  • Method of and apparatus for assessing the effect of a conduit on flow characteristics of a first fluid
    Publication number: 20050165289
    Abstract: A method of assessing the effect of a conduit section (11) on flow characteristics of a first fluid in a first conduit system (1). A first fluid is caused to flow through the first conduit system (1). A transverse flow parameter of the first fluid in the first conduit system (1) downstream of the conduit section (11) is detected. At least one transverse flow characteristic of the first fluid is determined from the detected transverse flow parameter. The effect of the conduit section (11) is then assessed from the determined flow characteristics.
    Type: Application
    Filed: September 18, 2002
    Publication date: July 28, 2005
    Applicant: Tayside Flow Technologies
    Inventors: John Houston, Peter Stonebridge, John, Bruce Cameron Dick, Robert Hood, Allana Johnstone, Christophem Emmanuel Sarran, Craig McLeod Duff
  • Helical formation for a conduit
    Publication number: 20050061380
    Abstract: A helical formation (2) for a conduit (1). The helical formation (2) comprises an elongate member defining at least a portion of a helix, the elongate member comprising two inwardly extending portions (6, 7). The inwardly extending portions (6, 7) are spaced from each other and extend along the length of the elongate member in side-by-side relationship.
    Type: Application
    Filed: November 21, 2002
    Publication date: March 24, 2005
    Inventors: John Houston, Robert Hood, John Dick, Craig Duff, Allana Johnstone, Christophe Sarran, Peter Stonebridge
  • Flow means
    Patent number: 6776194
    Abstract: There is a disclosed a conduit supporting structure that imposes, maintains and/or reinforces a flow guiding formation of a conduit, whereby to effect a desired flow configuration in the conduit.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: August 17, 2004
    Assignee: Tayside Flow Technologies Limited
    Inventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff, Allan Thomson
  • Insert for a conduit
    Publication number: 20030139807
    Abstract: There is disclosed an insert (2) for a conduit (4) adapted to effect helical flow in the conduit (4) comprising a longitudinally extending member having a helical formation.
    Type: Application
    Filed: November 21, 2002
    Publication date: July 24, 2003
    Inventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
  • Method for introducing an internal helical formation into a flexible tubular material
    Publication number: 20030120257
    Abstract: There is disclosed a method for introducing a helical formation (11) into a flexible tubular material (12). The material (12) is supported together with a surrounding helical former (13) so as to deform the material (12) to have a helical indentation (11) corresponding to the shape of the former (13). The material (12) is then set in that configuration and the former (13) is removed.
    Type: Application
    Filed: November 20, 2002
    Publication date: June 26, 2003
    Inventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
  • Flow means
    Publication number: 20020179166
    Abstract: There is a disclosed a conduit supporting structure that imposes, maintains and/or reinforces a flow guiding formation of a conduit, whereby to effect a desired flow configuration in the conduit.
    Type: Application
    Filed: June 5, 2002
    Publication date: December 5, 2002
    Inventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff, Allan Thomson