公开(公告)号：AU2003277036A8

公开(公告)日：2004-04-19

申请号：AU2003277036

申请日：2003-09-29

Applicant: MOTOROLA INC

Inventor： PENNISI ROBERT ,  PRATT STEVEN DUANE ,  KELLEY RONALD JAMES ,  MUTHUSWAMY SIVAKUMAR

IPC: H01M20060101 ,  H01M8/04 ,  H01M8/10

Abstract: A method of and fuel cell system for limiting an amount of a fuel crossing over a membrane in a fuel cell, the method including determining an appropriate molecular ratio of the fuel and water for a fuel-water mixture 503; and controlling an amount of the fuel-water mixture that is available to an anode side of the membrane 507 in the fuel cell according to an amount of the fuel that will be electro-oxidized by the fuel cell. The fuel cell system includes a fuel cell membrane 103 having an anode layer 107, a cathode layer 109, and an electrolyte layer 111 where the cathode layer is exposed to an oxygen source, and a fuel delivery system 105 including a fuel chamber 119 disposed around and proximate to the anode layer at a side opposite to the electrolyte layer, the fuel delivery system implementing the method above.

公开(公告)号：DE69125841D1

公开(公告)日：1997-05-28

申请号：DE69125841

申请日：1991-08-13

Applicant: MOTOROLA INC

Inventor： LANDRETH BOBBY ,  PENNISI ROBERT ,  DAVIS JAMES ,  NOUNOU FADIA

IPC: B23K35/363 ,  B23K1/00 ,  B23K35/36 ,  H05K3/34 ,  B23K35/362

Abstract: Fluxing compositions containing compounds that generate acids upon photoinitiation from a light source such as Hg/Xe ultraviolet (UV) light sources are described. The acids clean oxides from the printed circuit boards (PCBs) under assembly and then volatilize with little or no need for a cleaning step, or cleaning only with water. The compounds that release an oxide removing agent, sometimes called a "photoacid" include metal and organic onium salts and furyl compounds bearing a carbonyl group. Such fluxing compositions can be used mixed with typical solder formulations, such as lead/tin solders, or applied topically thereto; both techniques permit the assembly of PCBs more easily and with high quality bonds.

公开(公告)号：DE69118548D1

公开(公告)日：1996-05-09

申请号：DE69118548

申请日：1991-08-13

Applicant: MOTOROLA INC

Inventor： DAVIS JAMES ,  PENNISI ROBERT ,  NOUNOU FADIA ,  LANDRETH BOBBY ,  MULLIGAN ROBERT

IPC: B23K35/36 ,  H05K3/34

公开(公告)号：BR0314816A

公开(公告)日：2005-08-02

申请号：BR0314816

申请日：2003-09-29

Applicant: MOTOROLA INC

Inventor： KELLEY RONALD JAMES ,  PRATT STEVEN DUANE ,  MUTHUSWAMY SIVAKUMAR ,  PENNISI ROBERT

IPC: H01M20060101 ,  H01M8/04 ,  H01M8/10

Abstract: A method of and fuel cell system for limiting an amount of a fuel crossing over a membrane in a fuel cell, the method including determining an appropriate molecular ratio of the fuel and water for a fuel-water mixture 503; and controlling an amount of the fuel-water mixture that is available to an anode side of the membrane 507 in the fuel cell according to an amount of the fuel that will be electro-oxidized by the fuel cell. The fuel cell system includes a fuel cell membrane 103 having an anode layer 107, a cathode layer 109, and an electrolyte layer 111 where the cathode layer is exposed to an oxygen source, and a fuel delivery system 105 including a fuel chamber 119 disposed around and proximate to the anode layer at a side opposite to the electrolyte layer, the fuel delivery system implementing the method above.

公开(公告)号：AU2003277036A1

公开(公告)日：2004-04-19

申请号：AU2003277036

申请日：2003-09-29

Applicant: MOTOROLA INC

Inventor： KELLEY RONALD JAMES ,  PRATT STEVEN DUANE ,  MUTHUSWAMY SIVAKUMAR ,  PENNISI ROBERT

IPC: H01M20060101 ,  H01M8/04 ,  H01M8/10

Abstract: A method of and fuel cell system for limiting an amount of a fuel crossing over a membrane in a fuel cell, the method including determining an appropriate molecular ratio of the fuel and water for a fuel-water mixture 503; and controlling an amount of the fuel-water mixture that is available to an anode side of the membrane 507 in the fuel cell according to an amount of the fuel that will be electro-oxidized by the fuel cell. The fuel cell system includes a fuel cell membrane 103 having an anode layer 107, a cathode layer 109, and an electrolyte layer 111 where the cathode layer is exposed to an oxygen source, and a fuel delivery system 105 including a fuel chamber 119 disposed around and proximate to the anode layer at a side opposite to the electrolyte layer, the fuel delivery system implementing the method above.

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.

公开(公告)号：AU2003265332A1

公开(公告)日：2004-03-03

申请号：AU2003265332

申请日：2003-07-31

Applicant: MOTOROLA INC

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

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.

公开(公告)号：DE69129589T2

公开(公告)日：1998-12-03

申请号：DE69129589

申请日：1991-11-15

Applicant: MOTOROLA INC

Inventor： MULLEN WILLIAM ,  SUPPELSA ANTHONY ,  PENNISI ROBERT

IPC: B23K35/363 ,  B23K35/14 ,  B23K35/36 ,  C08K5/00 ,  C08L69/00 ,  C09J109/00 ,  C09J133/00 ,  C09J133/04 ,  C09J167/00 ,  C09J167/02 ,  H05K3/30 ,  H05K3/34 ,  C08K5/09 ,  C08K5/05

Abstract: A tacking agent is provided for use in temporarily adhering electronic components and providing fluxing properties for soldering electronic assemblies. The tacking agent comprises a fluxing agent and a tackifier. The fluxing agent is composed of one or more carboxylic acids having the formula where R is an alkyl group containing from 1 to 6 carbon atoms, R' is selected from the group consisting of hydrogen and hydroxyl, and R'' is selected from the group consisting of hydrogen, hydroxyl and carboxyl. The tackifier comprises one or more alcohols, aromatic hydrocarbon solvents, aliphatic hydrocarbon solvents, or polymers. The tacking agent is deposited onto a printed circuit board or other substrate, the electronic components are placed into the deposited tacking agent and soldered. During solder reflow the fluxing agent provides fluxing action for the soldering process, and the tackifier volatilizes, leaving little or no residue on the printed circuit board.

公开(公告)号：DE69129589D1

公开(公告)日：1998-07-16

申请号：DE69129589

申请日：1991-11-15

Applicant: MOTOROLA INC

Inventor： MULLEN WILLIAM ,  SUPPELSA ANTHONY ,  PENNISI ROBERT

IPC: B23K35/363 ,  B23K35/14 ,  B23K35/36 ,  C08K5/00 ,  C08L69/00 ,  C09J109/00 ,  C09J133/00 ,  C09J133/04 ,  C09J167/00 ,  C09J167/02 ,  H05K3/30 ,  H05K3/34 ,  C08K5/09 ,  C08K5/05

Abstract: A tacking agent is provided for use in temporarily adhering electronic components and providing fluxing properties for soldering electronic assemblies. The tacking agent comprises a fluxing agent and a tackifier. The fluxing agent is composed of one or more carboxylic acids having the formula where R is an alkyl group containing from 1 to 6 carbon atoms, R' is selected from the group consisting of hydrogen and hydroxyl, and R'' is selected from the group consisting of hydrogen, hydroxyl and carboxyl. The tackifier comprises one or more alcohols, aromatic hydrocarbon solvents, aliphatic hydrocarbon solvents, or polymers. The tacking agent is deposited onto a printed circuit board or other substrate, the electronic components are placed into the deposited tacking agent and soldered. During solder reflow the fluxing agent provides fluxing action for the soldering process, and the tackifier volatilizes, leaving little or no residue on the printed circuit board.

公开(公告)号：DE69125841T2

公开(公告)日：1997-10-16

申请号：DE69125841

申请日：1991-08-13

Applicant: MOTOROLA INC

Inventor： LANDRETH BOBBY ,  PENNISI ROBERT ,  DAVIS JAMES ,  NOUNOU FADIA

IPC: B23K35/363 ,  B23K1/00 ,  B23K35/36 ,  H05K3/34 ,  B23K35/362

Abstract: Fluxing compositions containing compounds that generate acids upon photoinitiation from a light source such as Hg/Xe ultraviolet (UV) light sources are described. The acids clean oxides from the printed circuit boards (PCBs) under assembly and then volatilize with little or no need for a cleaning step, or cleaning only with water. The compounds that release an oxide removing agent, sometimes called a "photoacid" include metal and organic onium salts and furyl compounds bearing a carbonyl group. Such fluxing compositions can be used mixed with typical solder formulations, such as lead/tin solders, or applied topically thereto; both techniques permit the assembly of PCBs more easily and with high quality bonds.