Patents by Inventor Sean Barrett

Sean Barrett 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: 20070215862
    Abstract: Various embodiments of the present invention are directed to methods for generating an entangled state of qubits. In one embodiment of the present invention, a method for preparing an entangled state of qubits comprises providing a probe and N non-interacting qubits, each qubit comprises a linear superposition of two basis states. The probe is transmitted into an interaction region that separately couples the probe to each of the qubits and produces a number of different probes. A linear superposition of states is output from the interaction region, each state in the linear superposition of states comprises a tensor product of entangled basis states and one of the different probes. The linear superposition of states is projected into one of the entangled states by measuring the state of the probe.
    Type: Application
    Filed: January 30, 2006
    Publication date: September 20, 2007
    Inventors: Raymond Beausoleil, William Munro, Timothy Spillar, Pieter Kok, Sean Barrett, Kae Nemoto
  • Publication number: 20070119666
    Abstract: A brake assembly generally includes a hanging brake pad, an abutted brake pad and a caliper body that clamps the pads against a rotor. The brake system comprises a support bracket having a first portion and a second portion. The first portion defines an aperture that receives the abutted brake pad. The second portion extends generally perpendicular from the first portion. At least one rail extends from the second portion. The at least one rail receives the hanging brake pad and wherein the support bracket is adapted to connect to the caliper body.
    Type: Application
    Filed: November 28, 2005
    Publication date: May 31, 2007
    Inventors: Manuel Barbosa, Seiji Nishimura, Sean Barrett
  • Publication number: 20070119665
    Abstract: A brake assembly including a caliper body that clamps brake pads against a rotor. The brake includes a support bracket defining a planar portion, a bridging portion and a pair of rails. The bridging portion extends in a generally perpendicular direction from the planar portion. The pair of rails extends from the bridging portion. Each of the rails has an inside face, an outside face, a top face, a bottom face and an outboard face. The inside face, the outside face, the top face and the bottom face are aligned in generally a perpendicular direction relative to the planar portion. A first dimension defining a length between the inside face and the outside face near the top face is less than a second dimension defining a length between the inside face and the outside near the bottom face.
    Type: Application
    Filed: November 28, 2005
    Publication date: May 31, 2007
    Inventors: Manuel Barbosa, Sean Barrett, Philip Jedele
  • Publication number: 20070051568
    Abstract: The present invention relates to a disc brake operable to apply a clamping force to a rotatable disc. The disc brake includes a support bracket, slide pins coupled to the support bracket, inner and outer brake shoes and a caliper supported by the slide pins. The support bracket is a substantially rectangular frame defining a window. The window is adapted to accept a portion of a disc protruding therethrough. The support bracket includes a pair of spaced apart apertures extending through the frame where each aperture includes a threaded portion and a conical seat extending along an axis aligned to intersect the disc. The slide pins are threadingly engaged with a threaded portion. The slide pins do not extend through the window but protrude outwardly away from the window. Each slide pin has a tapered portion in engagement with one of the conical seats.
    Type: Application
    Filed: September 8, 2005
    Publication date: March 8, 2007
    Inventors: Manuel Barbosa, Sean Barrett, Philip Jedele
  • Publication number: 20060289249
    Abstract: A brake caliper assembly includes a caliper body with a support portion and a force applying portion. A pair of brake pads is slidably coupled with the caliper body. The force applying portion has a first cylinder adapted to be fixed to a vehicle to enable the support portion to slide with respect to the first cylinder. A second cylinder is slidably positioned within a bore of the first cylinder. A piston is positioned within a bore of the second cylinder and is movable with respect to the second cylinder to apply a force onto the brake pads.
    Type: Application
    Filed: June 22, 2005
    Publication date: December 28, 2006
    Inventors: Seiji Nishimura, Sean Barrett
  • Patent number: 7097004
    Abstract: A boot-type seal having a seal and a valve. The seal has a first seal member, which is configured to sealingly engage a first surface, and a second seal member, which is configured to sealingly engage a second surface. The valve is coupled to the seal and is operable in a first condition, which inhibits fluid communication therethrough, and a second condition, which permits fluid communication therethrough. The condition of the valve changes from the first condition to the second condition in response to a fluid pressure exerted on a side of the seal that exceeds a predetermined threshold pressure. A brake assembly that incorporates the boot-type seal is also provided.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: August 29, 2006
    Assignee: Akebono Corporation (North America)
    Inventors: Sean Barrett, Seiji Nishimura, Takashi Matsumoto
  • Publication number: 20060017992
    Abstract: Nonlinear electromagnetic elements can efficiently implement quantum information processing tasks such as controlled phase shifts, non-demolition state detection, quantum subspace projections, non-demolition Bell state analysis, heralded state preparation, quantum non-demolition encoding, and fundamental quantum gate operations. Direct use of electromagnetic non-linearity can amplify small phase shifts and use feed forward systems in a near deterministic manner with high operating efficiency. Measurements using homodyne detectors can cause near deterministic projection of input states on a Hilbert subspace identified by the measurement results. Feed forward operation can then alter the projected state if desired to achieve a desired output state with near 100% efficiency.
    Type: Application
    Filed: July 26, 2004
    Publication date: January 26, 2006
    Inventors: Raymond Beausoleil, William Munro, Timothy Spiller, Sean Barrett, Pieter Kok, Kae Nemoto
  • Publication number: 20050236237
    Abstract: A disc brake caliper assembly is provided including a support bracket, a pair of slide pins, and a caliper body. The support bracket includes an inboard rail and an outboard rail. The inboard rail defines a pair of engagement bores. The pair of slide pins engage the pair of engagement bores. The caliper body slidably engages the pair of slide pins. The caliper body includes an inboard portion and an outboard portion. The inboard and outboard portions balance each other such that the caliper body has a center of gravity that is substantially axially aligned with the location of engagement between the slide pins and the engagement bores.
    Type: Application
    Filed: October 25, 2004
    Publication date: October 27, 2005
    Inventors: Sean Barrett, Philip Jedele
  • Publication number: 20050078902
    Abstract: A photonic interconnect system avoids high capacitance electric interconnects by using optical signals to communicate data between devices. The system can provide massively parallel information output by mapping logical addresses to frequency bands, so that modulation of a selected frequency band can encode information for a specific location corresponding to the logical address. Wavelength-specific directional couplers, modulators, and detectors for the photonic interconnect system can be efficiently fabricated at defects in a photonic bandgap crystal.
    Type: Application
    Filed: October 11, 2003
    Publication date: April 14, 2005
    Inventors: Raymond Beausoleil, Philip Kuekes, William Munro, Timothy Spiller, R. Williams, Sean Barrett
  • Publication number: 20040144603
    Abstract: A boot-type seal having a seal and a valve. The seal has a first seal member, which is configured to sealingly engage a first surface, and a second seal member, which is configured to sealingly engage a second surface. The valve is coupled to the seal and is operable in a first condition, which inhibits fluid communication therethrough, and a second condition, which permits fluid communication therethrough. The condition of the valve changes from the first condition to the second condition in response to a fluid pressure exerted on a side of the seal that exceeds a predetermined threshold pressure. A brake assembly that incorporates the boot-type seal is also provided.
    Type: Application
    Filed: January 24, 2003
    Publication date: July 29, 2004
    Inventors: Sean Barrett, Seiji Nishimura, Takashi Matsumoto