Patents by Inventor Christopher McLean

Christopher McLean 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: 20060257708
    Abstract: An electrical generating system consists of a fuel cell, and an oxygen gas delivery. The fuel cell includes and anode channel having an anode gas inlet for receiving a supply of hydrogen gas, a cathode channel having a cathode gas inlet and a cathode gas outlet, and an electrolyte in communication with the anode and cathode channel for facilitating ion exchange between the anode and cathode channel. The oxygen gas delivery system is coupled to the cathode gas inlet and delivers oxygen gas to the cathode channel. The electrical current generating system also includes gas recirculation means couple to the cathode gas outlet for recirculating a portion of cathode exhaust gas exhausted from the cathode gas outlet to the cathode gas inlet.
    Type: Application
    Filed: July 21, 2006
    Publication date: November 16, 2006
    Inventors: Bowie Keefer, Christopher McLean, Michael Brown
  • Publication number: 20050183572
    Abstract: Gas separation by pressure swing adsorption (PSA) and vacuum pressure swing adsorption (VPSA), to obtain a purified product gas of the less strongly adsorbed fraction of the feed gas mixture, is performed with an apparatus having a plurality of adsorbers. The adsorbers cooperate with first and second valves in a rotary PSA module, with the PSA cycle characterized by multiple intermediate pressure levels between the higher and lower pressures of the PSA cycle. Gas flows enter or exit the PSA module at the intermediate pressure levels as well as the higher and lower pressure levels, under substantially steady conditions of flow and pressure. The PSA module may comprise a rotor containing laminated sheet adsorbers and rotating within a stator, with ported valve faces between the rotor and stator to control the timing of the flows entering or exiting the adsorbers in the rotor.
    Type: Application
    Filed: July 2, 2004
    Publication date: August 25, 2005
    Inventors: Bowie Keefer, Christopher McLean, Matthew Babicki
  • Publication number: 20050145111
    Abstract: A rotary module for implementing a high frequency pressure swing adsorption process comprises a stator and a rotor rotatably coupled to the stator. The stator includes a first stator valve surface, a second stator valve surface, a plurality of first function compartments opening into the first stator valve surface, and a plurality of second function compartments opening into the second stator valve surface. The rotor includes a first rotor valve surface in communication with the first stator valve surface, a second rotor valve surface in communication with the second stator valve surface, and a plurality of flow paths for receiving adsorbent material therein.
    Type: Application
    Filed: July 14, 2003
    Publication date: July 7, 2005
    Inventors: Bowie Keefer, David Doman, Christopher McLean
  • Publication number: 20050132890
    Abstract: An espresso tamper including a force calibration means is disclosed. The tamper is optimally handheld. Upon force of a desired magnitude being applied by a user, at least one discrete signal, such as an audible, visual, tactile or electrical signal is emitted. The tamper handle includes an anti-rotation feature. The handle is flared to avoid pinching the user's fingers during operation and to stop the user's fingers from sliding down the handle or in any way touching the base, thereby rendering the tamper more effective and safe. The tamper and force-calibration kit and method of use optimize espresso making.
    Type: Application
    Filed: December 17, 2004
    Publication date: June 23, 2005
    Applicant: Espro, Inc.
    Inventors: Bruce Constantine, Christopher McLean
  • Publication number: 20030196550
    Abstract: Gas separation by pressure swing adsorption (PSA) and vacuum pressure swing adsorption (VPSA), to obtain a purified product gas of the less strongly adsorbed fraction of the feed gas mixture, is performed with an apparatus having a plurality of adsorbers. The adsorbers cooperate with first and second valve means in a rotary PSA module, with the PSA cycle characterized by multiple intermediate pressure levels between the higher and lower pressures of the PSA cycle. Gas flows enter or exit the PSA module at the intermediate pressure levels as well as the higher and lower pressure levels, under substantially steady conditions of flow and pressure. The PSA module comprises a rotor containing laminated sheet adsorbers and rotating within a stator, with ported valve faces between the rotor and stator to control the timing of the flows entering or exiting the adsorbers in the rotor. Feed gas is compressed prior to entry to the first valve means.
    Type: Application
    Filed: February 4, 2003
    Publication date: October 23, 2003
    Applicant: QuestAir Technologies Inc.
    Inventors: Bowie G. Keefer, Christopher McLean
  • Patent number: 6533846
    Abstract: A rotary module for implementing a high frequency pressure swing adsorption process includes a stator having a number of function compartments opening into the stator valve faces, a rotor rotatably coupled to the stator and including a number of apertures opening into the rotor valve faces, and a self-regulating clearance-type valve seal positioned between the valve faces of the stator and rotor so as to regulate the rate of gas flow between the stator and the rotor. Each valve seal includes a sealing face disposed adjacent a respective one of the rotor valve faces and is pivotable relative to the respective rotor valve face for varying the gas flow rate in accordance with the clearance distance between the sealing face and the respective rotor valve face. Each valve seal also includes a passage which communicates with one of the function compartments for varying the clearance distance in response to a pressure differential between the passage and an approaching aperture.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: March 18, 2003
    Assignee: QuestAir Technologies, Inc.
    Inventors: Bowie G. Keefer, Christopher McLean, Les Jeziorowski, Kevin A. Kaupert, Marie-Claude Taponat, Christopher Stoner
  • Patent number: 6514319
    Abstract: Gas separation by pressure swing adsorption (PSA) and vacuum pressure swing adsorption (VPSA), to obtain a purified product gas of the less strongly adsorbed fraction of the feed gas mixture, is performed with an apparatus having a plurality of adsorbers. The adsorbers cooperate with first and second valves in a rotary PSA module, with the PSA cycle characterized by multiple intermediate pressure levels between the higher and lower pressures of the PSA cycle. Gas flows enter or exit the PSA module at the immediate pressure levels as well as the higher and lower pressure levels, under substantially steady conditions of flow and pressure. The PSA module comprises a rotor containing laminated sheet adsorbers and rotating within a stator, with ported valve faces between the rotor and stator to control the timing of the flows entering or exiting the adsorbers in the rotor.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: February 4, 2003
    Assignee: QuestAir Technologies Inc.
    Inventors: Bowie G. Keefer, Christopher McLean
  • Patent number: 6406523
    Abstract: Gas separation by pressure swing adsorption (PSA) is performed within an apparatus having a plurality of adsorbers cooperating with first and second valves in a rotary PSA module, with the PSA cycle characterized by multiple intermediate pressure levels between the higher and lower pressures of the PSA cycle. Gas flows enter or exit the PSA module at the intermediate pressure levels as well as the higher and lower pressure levels, under substantially steady conditions of flow and pressure. The PSA module comprises a rotor containing laminated sheet adsorbers and rotating within a stator, with ported valve faces between the rotor and stator to control the timing of the flows entering or exiting the adsorbers in the rotor.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: June 18, 2002
    Assignee: QuestAir Technologies, Inc.
    Inventors: Denis J. Connor, David G. Doman, Les Jeziorowski, Bowie G. Keefer, Belinda Larisch, Christopher McLean, Ian Shaw
  • Patent number: 6319283
    Abstract: An orthopaedic knee component for implanting within a proximal tibia includes a tibial tray with a proximal tibial plateau and a projection extending generally orthogonal to the tibial plateau. The tibial tray also includes a distally extending stem. A bearing is coupled with the tibial plateau and has an articular bearing surface for engagement with a femoral component. The bearing is rotationally movable between a first rotational limit and a second rotational limit about an axis extending generally orthogonal to the tibial plateau. The bearing has a backing surface engaging the tibial plateau which is sized and shaped such that the backing surface is substantially entirely supported by the tibial plateau at any position during rotational movement between the first rotation limit and the second rotational limit.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: November 20, 2001
    Assignee: Bristol-Myers Squibb Company
    Inventors: John Insall, Audrey Patmore, Christopher McLean, Linggawati Tanamal, Clayton R. Miller
  • Publication number: 20010023640
    Abstract: Gas separation by pressure swing adsorption (PSA) and vacuum pressure swing adsorption (VPSA), to obtain a purified product gas of the less strongly adsorbed fraction of the feed gas mixture, is performed with an apparatus having a plurality of adsorbers. The adsorbers cooperate with first and second valve means in a rotary PSA module, with the PSA cycle characterized by multiple intermediate pressure levels between the higher and lower pressures of the PSA cycle. Gas flows enter or exit the PSA module at the intermediate pressure levels as well as the higher and lower pressure levels, under substantially steady conditions of flow and pressure. The PSA module comprises a rotor containing laminated sheet adsorbers and rotating within a stator, with ported valve faces between the rotor and stator to control the timing of the flows entering or exiting the adsorbers in the rotor. Feed gas is compressed prior to entry to the first valve means.
    Type: Application
    Filed: December 8, 2000
    Publication date: September 27, 2001
    Applicant: QUESTAIR TECHNOLOGIES INC.
    Inventors: Bowie G. Keefer, Julie C. Scott, Christopher McLean
  • Patent number: 6033410
    Abstract: Orthopaedic instrumentation used for preparing a distal end of a femur during an orthopaedic revision surgery includes a cutting guide block with a medial side, a lateral side and an anterior cutting guide surface. The medial side and the lateral side each have a notch therein. An anterior flange is removably attached to the cutting guide block and positioned adjacent to the anterior cutting guide surface. The anterior flange includes a pair of arms which are respectively disposed within the medial side notch and the lateral side notch.
    Type: Grant
    Filed: January 4, 1999
    Date of Patent: March 7, 2000
    Assignee: Bristol-Myers Squibb Company
    Inventors: Christopher McLean, Robert Hodorek, Mike LaLonde, Ron Donkers, Mark Heldreth