Patents by Inventor Richard Freeman Post
Richard Freeman Post 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: 8917086Abstract: A position sensor suitable for use in linear synchronous motor (LSM) drive systems employing Halbach arrays to create their magnetic fields is described. The system has several advantages over previously employed ones, especially in its simplicity and its freedom from being affected by weather conditions, accumulated dirt, or electrical interference from the LSM system itself.Type: GrantFiled: July 19, 2011Date of Patent: December 23, 2014Assignee: Lawrence Livermore National Security, LLCInventor: Richard Freeman Post
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Patent number: 8264121Abstract: Electrostatic generators/motors designs are provided that include a stator fixedly connected to a first central support centered about a central axis. The stator elements are attached to the first central support. Similarly, a second stator is connected to a central support centered about the central axis, and the second stator has stator elements attached to the second central support. A rotor is located between the first stator and the second stator and includes an outer support, where the rotor is rotatably centered about the central axis, the rotor having elements in contact with the outer support, each rotor element having an extending rotor portion that extends radially from the outer support toward the axis of rotation.Type: GrantFiled: September 30, 2010Date of Patent: September 11, 2012Assignee: Lawrence Livermore National Security, LLCInventor: Richard Freeman Post
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Publication number: 20120019235Abstract: A position sensor suitable for use in linear synchronous motor (LSM) drive systems employing Halbach arrays to create their magnetic fields is described. The system has several advantages over previously employed ones, especially in its simplicity and its freedom from being affected by weather conditions, accumulated dirt, or electrical interference from the LSM system itself.Type: ApplicationFiled: July 19, 2011Publication date: January 26, 2012Applicant: Lawrence Livermore National Security, LLCInventor: Richard Freeman Post
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Publication number: 20110031844Abstract: Electrostatic generators/motors designs are provided that include a stator fixedly connected to a first central support centered about a central axis. The stator elements are attached to the first central support. Similarly, a second stator is connected to a central support centered about the central axis, and the second stator has stator elements attached to the second central support. A rotor is located between the first stator and the second stator and includes an outer support, where the rotor is rotatably centered about the central axis, the rotor having elements in contact with the outer support, each rotor element having an extending rotor portion that extends radially from the outer support toward the axis of rotation.Type: ApplicationFiled: September 30, 2010Publication date: February 10, 2011Inventor: Richard Freeman Post
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Publication number: 20100176674Abstract: A first movable element includes a first Halbach array permanent magnet array. A second movable element placed in operable proximity to said first Halbach array includes a second Halbach array permanent magnet array. The first Halbach array is configured to transmit torque upon movement to the second movable element by magnetic force, wherein the torque is transferred with no physical contact occurring between the first movable element and the second movable element.Type: ApplicationFiled: January 14, 2010Publication date: July 15, 2010Inventor: Richard Freeman Post
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Patent number: 7096794Abstract: A simple permanent-magnet-excited maglev geometry provides levitation forces and is stable against vertical displacements from equilibrium but is unstable against horizontal displacements. An Inductrack system is then used in conjunction with this system to effect stabilization against horizontal displacements and to provide centering forces to overcome centrifugal forces when the vehicle is traversing curved sections of a track or when any other transient horizontal force is present. In some proposed embodiments, the Inductrack track elements are also employed as the stator of a linear induction-motor drive and braking system.Type: GrantFiled: August 27, 2003Date of Patent: August 29, 2006Assignee: The Regents of the University of CaliforniaInventor: Richard Freeman Post
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Patent number: 6664880Abstract: A magnet configuration comprising a pair of Halbach arrays magnetically and structurally connected together are positioned with respect to each other so that a first component of their fields substantially cancels at a first plane between them, and a second component of their fields substantially adds at this first plane. A track of windings is located between the pair of Halbach arrays and a propulsion mechanism is provided for moving the pair of Halbach arrays along the track. When the pair of Halbach arrays move along the track and the track is not located at the first plane, a current is induced in the windings and a restoring force is exerted on the pair of Halbach arrays.Type: GrantFiled: June 29, 2001Date of Patent: December 16, 2003Assignee: The Regents of the University of CaliforniaInventor: Richard Freeman Post
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Patent number: 6633217Abstract: A magnet configuration comprising a pair of Halbach arrays magnetically and structurally connected together are positioned with respect to each other so that a first component of their fields substantially cancels at a first plane between them, and a second component of their fields substantially adds at this first plane. A track of windings is located between the pair of Halbach arrays and a propulsion mechanism is provided for moving the pair of Halbach arrays along the track. When the pair of Halbach arrays move along the track and the track is not located at the first plane, a current is induced in the windings and a restoring force is exerted on the pair of Halbach arrays.Type: GrantFiled: June 26, 2002Date of Patent: October 14, 2003Assignee: The Regents of the University of CaliforniaInventor: Richard Freeman Post
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Patent number: 6629503Abstract: A simple permanent-magnet-excited maglev geometry provides levitation forces and is stable against vertical displacements from equilibrium but is unstable against horizontal displacements. An Inductrack system is then used in conjunction with this system to effect stabilization against horizontal displacements and to provide centering forces to overcome centrifugal forces when the vehicle is traversing curved sections of a track or when any other transient horizontal force is present. In some proposed embodiments, the Inductrack track elements are also employed as the stator of a linear induction-motor drive and braking system.Type: GrantFiled: June 29, 2001Date of Patent: October 7, 2003Assignee: The Regents of the University of CaliforniaInventor: Richard Freeman Post
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Publication number: 20030005851Abstract: A simple permanent-magnet-excited maglev geometry provides levitation forces and is stable against vertical displacements from equilibrium but is unstable against horizontal displacements. An Inductrack system is then used in conjunction with this system to effect stabilization against horizontal displacements and to provide centering forces to overcome centrifugal forces when the vehicle is traversing curved sections of a track or when any other transient horizontal force is present In some proposed embodiments, the Inductrack track elements are also employed as the stator of a linear induction-motor drive and braking system.Type: ApplicationFiled: June 29, 2001Publication date: January 9, 2003Applicant: The Regents of the University of CaliforniaInventor: Richard Freeman Post
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Publication number: 20030005849Abstract: A magnet configuration comprising a pair of Halbach arrays magnetically and structurally connected together are positioned with respect to each other so that a first component of their fields substantially cancels at a first plane between them, and a second component of their fields substantially adds at this first plane. A track of windings is located between the pair of Halbach arrays and a propulsion mechanism is provided for moving the pair of Halbach arrays along the track. When the pair of Halbach arrays move along the track and the track is not located at the first plane, a current is induced in the windings and a restoring force is exerted on the pair of Halbach arrays.Type: ApplicationFiled: June 26, 2002Publication date: January 9, 2003Applicant: The Regents of the University of CaliforniaInventor: Richard Freeman Post
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Publication number: 20030006871Abstract: A magnet configuration comprising a pair of Halbach arrays magnetically and structurally connected together are positioned with respect to each other so that a first component of their fields substantially cancels at a first plane between them, and a second component of their fields substantially adds at this first plane. A track of windings is located between the pair of Halbach arrays and a propulsion mechanism is provided for moving the pair of Halbach arrays along the track. When the pair of Halbach arrays move along the track and the track is not located at the first plane, a current is induced in the windings and a restoring force is exerted on the pair of Halbach arrays.Type: ApplicationFiled: June 29, 2001Publication date: January 9, 2003Applicant: The Regents of the University of CaliforniaInventor: Richard Freeman Post