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    Two-stage hybrid gas pressure regulator
    21.
    发明专利
    Two-stage hybrid gas pressure regulator 未知

    公开(公告)号：AU2003265332A8

    公开(公告)日：2004-03-03

    申请号：AU2003265332

    申请日：2003-07-31

    Applicant: MOTOROLA INC

    Inventor： PRATT STEVEN D ,  PENNISI ROBERT ,  KELLEY RONALD J ,  MUTHUSWAMY SIVAKUMAR

    IPC: F24F11/00 ,  G05D20060101 ,  H01M8/04

    Abstract: A gas pressure regulator ( 100 ) includes a mechanical primary stage ( 102 ), preferably including a spring valve, and an electronic secondary stage ( 104 ), preferably including a micromachined pressure regulator, the combination of the mechanical primary stage and the electronic secondary stage suitable for relatively precise low pressure near zero flow rates with reasonable energy consumption rates, such as encountered when supplying fuel to a low power fuel cell system.

    METHOD AND APPARATUS FOR COLD TEMPERATURE OPERATION OF FUEL CELLS UTILIZING HYDRIDES HAVING DIFFERENT HEAT CAPACITIES
    22.
    发明专利
    METHOD AND APPARATUS FOR COLD TEMPERATURE OPERATION OF FUEL CELLS UTILIZING HYDRIDES HAVING DIFFERENT HEAT CAPACITIES 未知

    公开(公告)号：CA2408193A1

    公开(公告)日：2002-10-03

    申请号：CA2408193

    申请日：2002-03-06

    Applicant: MOTOROLA INC

    Inventor： PENNISI ROBERT W ,  MUTHUSWAMY SIVAKUMAR ,  KELLEY RONALD J ,  PRATT STEVEN D

    IPC: H01M20060101 ,  H01M6/00 ,  H01M8/04 ,  H01M8/06 ,  H01M8/22

    Abstract: An apparatus and method for temperature regulation of a fuel cell using differential heat capacity of the fuel storage media is disclosed. The metho d of regulating the temperature involves measuring the temperature of one or more fuel cells, comparing the temperature against target values, selecting a control method from a set of available control methods based on the result o f comparison and using that control method to initiate and control a regulatio n cycle, and actuating a flow control means using the selected control method to alter the flow of fuel between one or more fuel storage containers, each containing fuel storage media which exhibit different enthalpies of formatio n and dissociation. The regulation process starts with measuring temperature (110) of a fuel cell system (100). The measured temperature is then compared (120) to a predetermined set of ideal target values designed to provide peak fuel cell performance. Following the comparison step, a control method (130) is selected from a list of available control methods. The control method has the necessary parameters and logic to define an fuel flow initiation process (140) which in turn actuates a flow control means (150). Actuation of the fl ow control means changes the temperature of the one or more fuel cells and alte rs itsoperating parameters (160).

    Method and apparatus for thermal management of fuel cell systems
    23.
    发明专利
    Method and apparatus for thermal management of fuel cell systems 未知

    公开(公告)号：AU4954401A

    公开(公告)日：2001-10-23

    申请号：AU4954401

    申请日：2001-03-28

    Applicant: MOTOROLA INC

    Inventor： PRATT STEVEN D ,  KELLEY RONALD J ,  MUTHUSWAMY SIVAKUMAR ,  PENNISI ROBERT W

    IPC: G05B13/02 ,  G05B19/02 ,  H01M8/04 ,  H01M8/06 ,  H01M8/18

    Abstract: A method and apparatus for managing thermal performance of a fuel cell system having a fuel cell assembly and a fuel storage container is disclosed. The fuel cell system 100 consists of one or more fuel cells 110, each having a major surface 140, and disposed next to each other in a side-by-side adjacent arrangement and a fuel storage container 120 having an exterior wall 150. The fuel cells 110 are positioned such that distance between the major surfaces 140 and the fuel storage container wall 150 along a direction normal to the major surfaces is substantially the same. In addition, one or more of the fuel cells are in thermal contact with the fuel storage container such that cell waste heat is transferred to the fuel storage container.

    24.
    发明专利
    未知

    公开(公告)号：DE19741940A1

    公开(公告)日：1998-04-09

    申请号：DE19741940

    申请日：1997-09-23

    Applicant: MOTOROLA INC

    Inventor： NEWTON MARK D ,  PRATT STEVEN D ,  MUTHUSWAMY SIVAKUMAR ,  WILLIAMS KIMBERLY A ,  SWIRBEL THOMAS J ,  DAVIS JAMES LYNN ,  MARTIN LARA J ,  MULLIGAN ROBERT J ,  PIEPER KEVIN J ,  LEE BRIAN H ,  CALLANAN ROGER K

    IPC: H04B1/38 ,  C09K3/00

    Abstract: A communication device is designed to contain the lowest possible level of toxic or hazardous materials, so that when it is eventually disposed of, it will not harm the environment and can be safely recycled. Each component A1, A2, ..., An in the communication device has a calculated Component Toxicity Index value. A Product Toxicity Index for the entire communication device is calculated by summing the individual Component Toxicity Index values. The desired outcome is a communication device having a Product Toxicity Index less than or equal to 100. The resulting communication device is referred to as "environmentally friendly". The communication device may be a two-way radio (10), and some of the components are a radio transmitter (12), a radio receiver (14), an antenna (16), an amplifier (18), a battery (20) and a housing (22).

    A REWRITABLE SIGN SYSTEM
    25.
    发明专利
    A REWRITABLE SIGN SYSTEM 未知

    公开(公告)号：AU2003262692A1

    公开(公告)日：2004-03-19

    申请号：AU2003262692

    申请日：2003-08-14

    Applicant: MOTOROLA INC

    Inventor： PENNISI ROBERT W ,  KELLEY RONALD J ,  MUTHUSWAMY SIVAKUMAR ,  FREDLEY DAVID S ,  LANDRETH BOBBY DEAN ,  PRATT STEVEN D

    IPC: G02F1/13 ,  G02F1/133 ,  G02F1/1347 ,  G02F1/137 ,  G09G3/36 ,  G02F1/1345

    Abstract: Rewritable signs ( 100, 1300 ) that include bistable cholesteric liquid crystal layers ( 102, 1402, 1404, 1406 ) are provided. According to one embodiment a rewritable sign ( 100 ) is devoid of circuitry for establishing electric fields in localize regions for writing information to the rewritable sign ( 100 ), and is consequently inexpensive. In the latter embodiment, a separate information writer ( 400 ) that includes an array of pixel electrodes ( 404 ) that is driven by an active matrix ( 602 ) is used to write information on the rewritable sign. According to another embodiment a rewritable sign ( 1300 ) includes three cholesteric liquid layers ( 1402, 1404, 1406 ) each of which reflects a different primary color. The three cholesteric liquid crystal layers ( 1402, 1404, 1406 ) are interleaved with sets of conductive lines ( 1316, 1320, 1322, 1324 ) that are used to apply signals to the cholesteric liquid crystal layers ( 1402, 1404, 1406 ) for the purpose of writing information.

    METODO Y APARATO PARA OPERACION DE TEMPERATURA EN FRIO DE PILAS DE COMBUSTIBLE UTILIZANDO HIDRUROS QUE TIENEN DIFERENTES CAPACIDADES TERMICAS.
    27.
    发明专利
    METODO Y APARATO PARA OPERACION DE TEMPERATURA EN FRIO DE PILAS DE COMBUSTIBLE UTILIZANDO HIDRUROS QUE TIENEN DIFERENTES CAPACIDADES TERMICAS. 未知

    公开(公告)号：MXPA02011639A

    公开(公告)日：2003-05-14

    申请号：MXPA02011639

    申请日：2002-03-06

    Applicant: MOTOROLA INC

    Inventor： PRATT STEVEN D

    IPC: H01M20060101 ,  H01M6/00 ,  H01M8/04 ,  H01M8/06 ,  H01M8/22

    Abstract: Se describe un aparato y metodo para la regulacion de temperatura de una pila de combustible que utiliza capacidad termica diferencial del medio de almacenaje de combustible. El metodo para regular la temperatura implica medir la temperatura de una o mas pilas de combustible, comparar la temperatura con valores objetivo, seleccionar un metodo de control a partir de un conjunto de metodos de control disponibles basandose en el resultado de la comparacion y utilizar el metodo de control para iniciar y controlar un ciclo de regulacion, y accionar un medio de control de flujo utilizando el metodo de control seleccionado para alterar el flujo de combustible entre uno o mas contenedores de almacenaje de combustible, cada uno conteniendo medios de almacenaje de combustible que muestran diferentes entalpias de formacion y disociacion. El proceso de regulacion comienza con medir la temperatura (110) de un sistema (100) de pila de combustible. La temperatura medida entonces se compara (120) con un conjunto predeterminado de valores objetivo ideales designados para proporcionar el rendimiento de la pila de combustible pico. Despues de la etapa de comparacion, un metodo (130) de control se selecciona a partir de una lista de metodos de control disponibles. El metodo de control tiene los parametros necesarios y la logica para definir un proceso (140) de iniciacion de flujo de combustible que a su vez acciona un medio (160) de flujo de control. La activacion de un medio de control de flujo cambia la temperatura de una o mas de las pilas de combustible y altera sus parametros (160) de operacion.

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