Patents by Inventor Peter Arno Stonebridge
Peter Arno Stonebridge 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).
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Patent number: 9649186Abstract: A tubular conduit comprising: a tubular portion made from a flexible material. There is an external helical formation extending around the exterior of, and parallel to the axis of, the tubular portion and defining a first region of the tubular portion. The external helical formation is for supporting the tubular portion. There is also an internal helical formation, protruding inwardly of the interior of the tubular portion and extending parallel to the axis of the tubular portion and defining a second region of the tubular portion. The internal helical formation is for imparting helical flow on fluid passing through the tubular portion. The first region does not extend throughout the second region.Type: GrantFiled: June 17, 2013Date of Patent: May 16, 2017Assignee: Vascular Flow Technologies LimitedInventors: John Graeme Houston, Peter Arno Stonebridge
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Publication number: 20150265393Abstract: A vascular access graft comprises an elongate conduit having proximal and distal ends. At least a portion of the elongate conduit has a self-sealing property such that the portion remains impermeable after puncturing by a dialysis needle. The vascular access graft also comprises a helical fin projecting inwardly from the inner surface of the elongate conduit and extending parallel to the axis of the elongate conduit.Type: ApplicationFiled: May 27, 2015Publication date: September 24, 2015Inventors: Peter Arno Stonebridge, John Bruce Cameron Dick, John Graeme Houston, Robert Gordon Hood
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Patent number: 9067026Abstract: A vascular access graft (1) comprises an elongate conduit (2) having proximal and distal ends (3, 4). At least a portion of the elongate conduit (2) has a self-sealing property such that the portion remains impermeable after puncturing by a dialysis needle. The vascular access graft (1) also comprises a helical fin (6) projecting inwardly from the inner surface (5) of the elongate conduit (2) and extending parallel to the axis of the elongate conduit (2).Type: GrantFiled: May 19, 2010Date of Patent: June 30, 2015Assignee: Vascular Flow Technologies LimitedInventors: Peter Arno Stonebridge, John Bruce Cameron Dick, John Graeme Houston, Robert Gordon Hood
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Publication number: 20130282108Abstract: A tubular conduit comprising: a tubular portion made from a flexible material. There is an external helical formation extending around the exterior of, and parallel to the axis of, the tubular portion and defining a first region of the tubular portion. The external helical formation is for supporting the tubular portion. There is also an internal helical formation, protruding inwardly of the interior of the tubular portion and extending parallel to the axis of the tubular portion and defining a second region of the tubular portion. The internal helical formation is for imparting helical flow on fluid passing through the tubular portion. The first region does not extend throughout the second region.Type: ApplicationFiled: June 17, 2013Publication date: October 24, 2013Inventors: John Graeme Houston, Peter Arno Stonebridge
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Patent number: 8454675Abstract: An internal formation for a conduit. The formation has a longitudinally extending member adapted to extend along an inside surface of at least a portion of the length of the conduit. The longitudinally extending member has an asymmetric profile in a direction transverse of the longitudinal axis of the member.Type: GrantFiled: May 24, 2004Date of Patent: June 4, 2013Assignee: Tayside Flow Technologies Ltd.Inventors: John Graeme Houston, Robert Gordon Hood, Peter Arno Stonebridge, John Bruce Cameron Dick
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Publication number: 20120130314Abstract: A vascular access graft (1) comprises an elongate conduit (2) having proximal and distal ends (3, 4). At least a portion of the elongate conduit (2) has a self-sealing property such that the portion remains impermeable after puncturing by a dialysis needle. The vascular access graft (1) also comprises a helical fin (6) projecting inwardly from the inner surface (5) of the elongate conduit (2) and extending parallel to the axis of the elongate conduit (2).Type: ApplicationFiled: May 19, 2010Publication date: May 24, 2012Applicant: TAYSIDE FLOW TECHNOLOGIES LTD.Inventors: Peter Arno Stonebridge, John Bruce Cameron Dick, John Graeme Houston, Robert Gordon Hood
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Patent number: 8021415Abstract: 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: GrantFiled: January 17, 2008Date of Patent: September 20, 2011Assignee: Tayside Flow Technologies LimitedInventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
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Patent number: 7968036Abstract: 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: GrantFiled: April 10, 2008Date of Patent: June 28, 2011Assignee: Tayside Flow Technologies LimitedInventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
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Publication number: 20100298924Abstract: A tubular graft (1) comprises an elongate conduit (2) having distal and proximal ends (3, 4). The tubular graft (1) also comprises a helical fin (10) projecting inwardly from the inner surface of the elongate conduit (2) and extending parallel to the axis of the elongate conduit (2). The helical fin (10) extends from the distal end (3) of the elongate conduit (2) to a point (11) short of the proximal end (4) of the elongate conduit (2).Type: ApplicationFiled: May 19, 2009Publication date: November 25, 2010Applicant: TAYSIDE FLOW TECHNOLOGIES LTD.Inventors: John Graeme Houston, John Bruce Cameron Dick, Robert Gordon Hood, Peter Arno Stonebridge
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Publication number: 20100198337Abstract: A helical formation within a conduit and a method of determining the helix angle of the helical formation are disclosed. The method includes specifying the internal dimensions of the conduit and an intended fluid mass flow through the conduit. The helix angle is determined from the pressure drop and the turbulent kinetic energy for a conduit having the specified internal dimensions and intended fluid mass flow.Type: ApplicationFiled: April 8, 2010Publication date: August 5, 2010Applicant: TAYSIDE FLOW TECHNOLOGIES LTD.Inventors: John Graeme Houston, Robert Gordon Hood, Peter Arno Stonebridge, Allan Thomson
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Patent number: 7721767Abstract: A Method of Determining the Helix Angle of a Helical Formation for a Conduit. A method of determining the helix angle of a helical formation (4) within a conduit (1). The method includes specifying the internal dimensions of the conduit (1) and an intended fluid mass flow through the conduit (1). The helix angle is determined from the pressure drop and the turbulent kinetic energy for a conduit (1) having the specified internal dimensions and intended fluid mass flow.Type: GrantFiled: December 13, 2002Date of Patent: May 25, 2010Assignee: Tayside Flow Technologies Ltd.Inventors: John Graeme Houston, Robert Gordon Hood, Peter Arno Stonebridge, Allan Thomson
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Patent number: 7503226Abstract: 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: GrantFiled: September 18, 2002Date of Patent: March 17, 2009Assignee: Tayside Flow Technologies LtdInventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
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Publication number: 20080319536Abstract: 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: ApplicationFiled: April 10, 2008Publication date: December 25, 2008Inventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
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Patent number: 7331989Abstract: 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: GrantFiled: November 21, 2002Date of Patent: February 19, 2008Assignee: Tayside Flow Technologies LimitedInventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
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Patent number: 7185677Abstract: 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: GrantFiled: November 21, 2002Date of Patent: March 6, 2007Assignee: Tayside Flow Technologies LimitedInventors: John Graeme Houston, Robert Gordon Hood, John Bruce Cameron Dick, Craig McLeod Duff, Allana Johnstone, Christophe Emmanuel Sarran, Peter Arno Stonebridge
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Patent number: D522654Type: GrantFiled: December 1, 2003Date of Patent: June 6, 2006Assignee: Tayside Flow Technologies LimitedInventors: John Graeme Houston, Peter Arno Stonebridge, Robert Gordon Hood
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Patent number: D524442Type: GrantFiled: December 1, 2003Date of Patent: July 4, 2006Assignee: Tayside Flow Technologies LimitedInventors: John Graeme Houston, Peter Arno Stonebridge, Robert Gordon Hood
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Patent number: D526718Type: GrantFiled: October 4, 2005Date of Patent: August 15, 2006Assignee: Tayside Flow Technologies LimitedInventors: John Graeme Houston, Peter Arno Stonebridge, Robert Gordon Hood
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Patent number: D527104Type: GrantFiled: November 21, 2005Date of Patent: August 22, 2006Assignee: Tayside Flow Technologies LimitedInventors: John Graeme Houston, Peter Arno Stonebridge, Robert Gordon Hood
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Patent number: D567946Type: GrantFiled: October 4, 2005Date of Patent: April 29, 2008Assignee: Tayside Flow Technologies LimitedInventors: John Graeme Houston, Peter Arno Stonebridge, Robert Gordon Hood