Patents by Inventor John Laidlaw

John Laidlaw 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).

  • Publication number: 20140350660
    Abstract: An endoluminal prosthesis for deployment in a body which has a first tubular structure for stabilising the prosthesis, the first tubular structure being substantially concentric about a first axis and movable between a compact and an expanded state. The prosthesis also has a second tubular structure for supporting an artificial heart valve, the second tubular structure being substantially concentric about a second axis and moveable between a compact and an expanded state. The first axis and the second axis extend at different angles when the first and second structures are in the compact and/or expanded state. A third structure which is shape and/or length adjustable is positioned between the first and second structures.
    Type: Application
    Filed: November 14, 2012
    Publication date: November 27, 2014
    Inventors: Graeme Cocks, Gary S. Roubin, Ronald John Laidlaw Dick, Kathleen White, Zoran Milijasevic
  • Publication number: 20050006932
    Abstract: The triathlete bicycle saddle promotes a more aerodynamic position by enabling a flatter back while improving comfort and risk of injury by eliminating direct compression on the perineal region (crotch). The saddle is specifically designed for athletes riding in a more aggressive, aerodynamic position by supporting the athlete's weight on the seat bones and not on the perineal region. The truncated horn provides sufficient lateral support during cornering and descents. A guide loop on the nose of the saddle promotes smooth transition to the seated position by automatically centering and aligning the seat. The double cantilever rail frame provides additional comfort by reducing road vibration and shock through an independent suspension of the saddle body.
    Type: Application
    Filed: July 11, 2003
    Publication date: January 13, 2005
    Inventor: John Laidlaw
  • Patent number: 6701792
    Abstract: A torque sensing device adapted for use in an electric power assisted steering system is provided. In one embodiment, the device comprises first and second shafts interconnected by a torsion bar, a bushing disposed about the torsion bar and frictionally engaged with one of the shafts, and a stator/sensing device assembly. One of the shafts defines a projection while the other shaft defines a recess. The recess receives the projection and allows a limited degree or rotational movement of the projection within the recess. A plurality of magnets is disposed circumferentially about bushing. As a result of the frictional engagement with one of the shafts, the bushing rotates independently of the stator assembly. A sensing device, such as a Hall effect sensor, is positioned within a clearance between first and second poles within the stator and detects relative rotation of the bushing, which is indicative of rotation of the frictionally engaged shaft, within the stator.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: March 9, 2004
    Assignee: Visteon Global Technologies, Inc.
    Inventor: John Laidlaw
  • Patent number: 6540481
    Abstract: A diffuser for a centrifugal compressor in which the diffuser has a plurality of passageways that each include a diffuser inlet region, a diffuser throat region, and a diffusion region. Within the diffuser inlet region are positioned pairs of opposed ridges that disrupt the boundary layer growth and minimize aerodynamic blockage at the throat region. The diffusion region includes a first diffusion region downstream of the throat region and that has a first area expansion ratio, and the second diffusion region that includes flow dividers to allow a total area expansion rate within the second diffusion region that is about twice that of the area expansion rate in the first diffusion region.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: April 1, 2003
    Assignee: General Electric Company
    Inventors: Zaher Milad Moussa, Gilbert John Laidlaw, David John Tapparo
  • Publication number: 20030037622
    Abstract: A torque sensing device adapted for use in an electric power assisted steering system is provided. In one embodiment, the device comprises first and second shafts interconnected by a torsion bar, a bushing disposed about the torsion bar and frictionally engaged with one of the shafts, and a stator/sensing device assembly. One of the shafts defines a projection while the other shaft defines a recess. The recess receives the projection and allows a limited degree or rotational movement of the projection within the recess. A plurality of magnets is disposed circumferentially about bushing. As a result of the frictional engagement with one of the shafts, the bushing rotates independently of the stator assembly. A sensing device, such as a Hall effect sensor, is positioned within a clearance between first and second poles within the stator and detects relative rotation of the bushing, which is indicative of rotation of the frictionally engaged shaft, within the stator.
    Type: Application
    Filed: March 14, 2002
    Publication date: February 27, 2003
    Inventor: John Laidlaw
  • Publication number: 20020146320
    Abstract: A diffuser for a centrifugal compressor in which the diffuser has a plurality of passageways that each include a diffuser inlet region, a diffuser throat region, and a diffusion region. Within the diffuser inlet region are positioned pairs of opposed ridges that disrupt the boundary layer growth and minimize aerodynamic blockage at the throat region. The diffusion region includes a first diffusion region downstream of the throat region and that has a first area expansion ratio, and the second diffusion region that includes flow dividers to allow a total area expansion rate within the second diffusion region that is about twice that of the area expansion rate in the first diffusion region.
    Type: Application
    Filed: April 4, 2001
    Publication date: October 10, 2002
    Inventors: Zaher Milad Moussa, Gilbert John Laidlaw, David John Tapparo
  • Patent number: 4867343
    Abstract: The present invention relates to a continuous weighing system and more specifically to a combination of a "wild-flow" flow of material and a loss-in-weight monitoring system. An uncontrolled flow of material from a wild-flow stream is accurately weighed and discharged by the loss-in-weight system.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: September 19, 1989
    Assignee: Acrison, Inc.
    Inventors: Ronald J. Ricciardi, John Laidlaw
  • Patent number: 4722456
    Abstract: The present invention is a loss-in-weight feeding system including an accelerometer for detecting extraneous disturbances impinging on the system and preventing the disturbance from adversely affecting the feed rate. A split-beam weighing assembly senses the weight of the material in the container and produces a first signal to control the feed rate. The accelerometer is mounted on the split beam assembly and produces an acceleration signal. The acceleration signal is compared with a predetermined limit, and if the comparison shows a difference beyond a predetermined size, the action of the first signal is inhibited.
    Type: Grant
    Filed: July 25, 1986
    Date of Patent: February 2, 1988
    Assignee: Acrison, Inc.
    Inventors: John Laidlaw, Ronald J. Ricciardi, Stephen D. Kahn