Abstract: A fuel cell includes: a membrane electrode assembly; a porous member arranged on a cathode side of the membrane electrode assembly and having a first surface, a second surface, and an end surface portion, the end surface portion being between an end side portion of the first surface and the second surface; a sealing plate arranged along the end side portion of the first surface; and a separator plate arranged on the second surface. The porous member supplies oxidant gas to the membrane electrode assembly through the first surface, and discharges oxidant off-gas to a discharge portion of the fuel ceil via the end surface portion. The first surface has a first region facing the sealing plate and being between the sealing plate and the second region, the second surface has a second region. A hydrophilicity of the first region is different from that of the second region.

Abstract: A fuel cell includes: a membrane electrode assembly; a gas flow path member that has a first side that is arranged on a surface of the membrane electrode assembly; a pair of separators that are arranged sandwiching the membrane electrode assembly and the gas flow path member, and each have a separating portion and a plurality of holes separated by the separating portion, the holes being provided in each of opposite sides of the separator and being lined up in a predetermined direction along the sides; and a sealing plate that is arranged on an end portion of the first side adjacent to the holes, and is welded to the gas flow path member at a predetermined welding position, the predetermined welding position being provided in a region that includes a position on a straight line that passes through the separating portion and is perpendicular to the sides.

Abstract: A battery charger includes a battery attachment section configured to have a rechargeable battery releasably attached thereto. The battery attachment section includes a flat attachment surface having a width corresponding to a width of a bottom surface of a case of the battery to be charged and a length greater than a length of the bottom surface of the case of the battery to be charged; a plurality of locking hooks provided on the attachment surface; a charger terminal configured to contact a terminal of the battery to be charged, the charger terminal including a plurality of plate-shaped contact pieces configured to be inserted into engaging grooves of the battery to be charged; and an attachment projection adjacent to the attachment surface and configured to secure the battery to the charger.

Abstract: A battery charger includes a battery attachment section configured to have a rechargeable battery releasably attached thereto. The battery attachment section includes a flat attachment surface having a width corresponding to a width of a bottom surface of a case of the battery to be charged and a length greater than a length of the bottom surface of the case of the battery to be charged; a plurality of locking hooks provided on the attachment surface; a charger terminal configured to contact a terminal of the battery to be charged, the charger terminal including a plurality of plate-shaped contact pieces configured to be inserted into engaging grooves of the battery to be charged; and an attachment projection adjacent to the attachment surface and configured to secure the battery to the charger.

Abstract: A battery charger includes a battery attachment section configured to have a rechargeable battery releasably attached thereto. The battery attachment section includes a flat attachment surface having a width corresponding to a width of a bottom surface of a case of the battery to be charged and a length greater than a length of the bottom surface of the case of the battery to be charged; a plurality of locking hooks provided on the attachment surface; a charger terminal configured to contact a terminal of the battery to be charged, the charger terminal including a plurality of plate-shaped contact pieces configured to be inserted into engaging grooves of the battery to be charged; and an attachment projection adjacent to the attachment surface and configured to secure the battery to the charger.

Abstract: A battery charger includes a battery attachment section configured to have a rechargeable battery releasably attached thereto. The battery attachment section includes a flat attachment surface having a width corresponding to a width of a bottom surface of a case of the battery to be charged and a length greater than a length of the bottom surface of the case of the battery to be charged; a plurality of locking hooks provided on the attachment surface; a charger terminal configured to contact a terminal of the battery to be charged, the charger terminal including a plurality of plate-shaped contact pieces configured to be inserted into engaging grooves of the battery to be charged; and an attachment projection adjacent to the attachment surface and configured to secure the battery to the charger.

Abstract: To achieve a flat member for fuel cells in which the grain size of titanium is optimized to suppress local elongation and to reduce the siding distance to a punching die, enabling a reduction in ablation of the punching die. The flat member for fuel cells is an expand passage 10a or a separator 10b, and punched out portions 13, 14 are formed in the flat member by, for example, punch pressing. The flat member includes titanium or an alloy of titanium, and the titanium has an average grain size of 15.9 ?m or less.

Abstract: A fuel cell includes: a membrane electrode assembly; a gas flow path member that has a first side that is arranged on a surface of the membrane electrode assembly: a pair of separators that are arranged sandwiching the membrane electrode assembly and the gas flow path member, and each have a separating portion and a plurality of holes separated by the separating portion, the holes being provided in each of opposite sides of the separator and being lined up in a predetermined direction along the sides; and a sealing plate that is arranged on an end portion of the first side adjacent to the holes, and is welded to the gas flow path member at a predetermined welding position, the predetermined welding position being provided in a region that includes a position on a straight line that passes through the separating portion and is perpendicular to the sides.

Abstract: A fuel cell includes: a membrane electrode assembly; a porous member arranged on a cathode side of the membrane electrode assembly and having a first surface, a second surface, and an end surface portion, the end surface portion being between an end side portion of the first surface and the second surface; a sealing plate arranged along the end side portion of the first surface; and a separator plate arranged on the second surface. The porous member supplies oxidant gas to the membrane electrode assembly through the first surface, and discharges oxidant off-gas to a discharge portion of the fuel ceil via the end surface portion. The first surface has a first region facing the sealing plate and being between the sealing plate and the second region, the second surface has a second region. A hydrophilicity of the first region is different from that of the second region.

Abstract: There is provided a steering wheel that can reduce the load applied to an elastic body included in a dynamic damper to lengthen the life of the dynamic damper, and that allows the frequency of the dynamic damper to be adjusted easily. An insulator 14 includes a first flange portion 14a provided between a stopper 13 and an elastic body 15, and a second flange portion 14b provided between a coil spring 17 and the elastic body 15. The elastic body 15 includes a first diameter-increased portion 15a increased in diameter to be contactable with the first flange portion 14a, and a second diameter-increased portion 15b increased in diameter to be contactable with the second flange portion 14b. A contact surface of the first flange portion 14a with the first diameter-increased portion 15a has a plurality of linear projections 14c arranged in a substantially radial fashion.

Abstract: A battery charger includes a battery attachment section configured to have a rechargeable battery releasably attached thereto. The battery attachment section includes a flat attachment surface having a width corresponding to a width of a bottom surface of a case of the battery to be charged and a length greater than a length of the bottom surface of the case of the battery to be charged; a plurality of locking hooks provided on the attachment surface; a charger terminal configured to contact a terminal of the battery to be charged, the charger terminal including a plurality of plate-shaped contact pieces configured to be inserted into engaging grooves of the battery to be charged; and an attachment projection adjacent to the attachment surface and configured to secure the battery to the charger.

Abstract: A battery charger includes a battery attachment section configured to have a rechargeable battery releasably attached thereto. The battery attachment section includes a flat attachment surface having a width corresponding to a width of a bottom surface of a case of the battery to be charged and a length greater than a length of the bottom surface of the case of the battery to be charged; a plurality of locking hooks provided on the attachment surface; a charger terminal configured to contact a terminal of the battery to be charged, the charger terminal including a plurality of plate-shaped contact pieces configured to be inserted into engaging grooves of the battery to be charged; and an attachment projection adjacent to the attachment surface and configured to secure the battery to the charger.

Abstract: A battery charger includes a battery attachment section configured to have a rechargeable battery releasably attached thereto. The battery attachment section includes a flat attachment surface having a width corresponding to a width of a bottom surface of a case of the battery to be charged and a length greater than a length of the bottom surface of the case of the battery to be charged; a plurality of locking hooks provided on the attachment surface; a charger terminal configured to contact a terminal of the battery to be charged, the charger terminal including a plurality of plate-shaped contact pieces configured to be inserted into engaging grooves of the battery to be charged; and an attachment projection adjacent to the attachment surface and configured to secure the battery to the charger.

Abstract: An optical transceiver with two circuit boards is disclosed. The optical transceiver includes two OSAs, two circuit boards, and a holder put between two circuit boards. The circuit boards are assembled with the holder made of resin by the snap-in, and this intermediate product is set within the housing of the transceiver. The cover of the transceiver is also assembled by the snap-in without using screws and so on.

Abstract: A battery charger includes a battery attachment section configured to have a rechargeable battery releasably attached thereto. The battery attachment section includes a flat attachment surface having a width corresponding to a width of a bottom surface of a case of the battery to be charged and a length greater than a length of the bottom surface of the case of the battery to be charged; a plurality of locking hooks provided on the attachment surface; a charger terminal configured to contact a terminal of the battery to be charged, the charger terminal including a plurality of plate-shaped contact pieces configured to be inserted into engaging grooves of the battery to be charged; and an attachment projection adjacent to the attachment surface and configured to secure the battery to the charger.

Abstract: A battery charger includes a battery attachment section configured to have a rechargeable battery releasably attached thereto. The battery attachment section includes a flat attachment surface having a width corresponding to a width of a bottom surface of a case of the battery to be charged and a length greater than a length of the bottom surface of the case of the battery to be charged; a plurality of locking hooks provided on the attachment surface; a charger terminal configured to contact a terminal of the battery to be charged, the charger terminal including a plurality of plate-shaped contact pieces configured to be inserted into engaging grooves of the battery to be charged; and an attachment projection adjacent to the attachment surface and configured to secure the battery to the charger.

Abstract: A battery charger includes a battery attachment section configured to have a rechargeable battery releasably attached thereto. The battery attachment section includes a flat attachment surface having a width corresponding to a width of a bottom surface of a case of the battery to be charged and a length greater than a length of the bottom surface of the case of the battery to be charged; a plurality of locking hooks provided on the attachment surface; a charger terminal configured to contact a terminal of the battery to be charged, the charger terminal including a plurality of plate-shaped contact pieces configured to be inserted into engaging grooves of the battery to be charged; and an attachment projection adjacent to the attachment surface and configured to secure the battery to the charger.

Abstract: A battery charger includes a battery attachment section configured to have a rechargeable battery releasably attached thereto. The battery attachment section includes a flat attachment surface having a width corresponding to a width of a bottom surface of a case of the battery to be charged and a length greater than a length of the bottom surface of the case of the battery to be charged; a plurality of locking hooks provided on the attachment surface; a charger terminal configured to contact a terminal of the battery to be charged, the charger terminal including a plurality of plate-shaped contact pieces configured to be inserted into engaging grooves of the battery to be charged; and an attachment projection adjacent to the attachment surface and configured to secure the battery to the charger.

Abstract: A method for producing a prismatic secondary cell housing a flat electrode assembly includes disposing a first current-collecting member onto a first to-be-welded portion at a flat portion of an edge of the electrode assembly where a core-body exposed portion of the first electrode protrudes. A first receiving member is disposed onto a plane opposing the flat portion. The first current-collecting member, the core-body exposed portion, and the first receiving member are resistive-welded with the core-body exposed portion between the other members. A second current-collecting member is disposed onto a second to-be-welded portion at a position of the flat portion distanced from the first to-be-welded portion while avoiding contact between the collecting members. A conductive connecting member is placed between the collecting members or between the receiving members. The conductive connecting member and its abutting members are welded. One of the members is electrificably connected to an external output terminal.