Japan Storage Battery Co., Ltd.

Dainippon Screen Mfg. Co., Ltd.

Gs Yuasa Corporation

Takao Omae

Masahiko Kosai

Masashi Watanabe

Akira Kamada

Ryuji Kitakado

Tetsuo Hoki

Tetsuo Sano

Ken Sawai

Toshiaki Hayashi

Akio Tokunaga

Hisayuki Tsujinaka

Kenji Yamanaka

Teruhiro Hatanaka

Hiroyuki Ishiguro

Shigeharu Osumi

Isao Teramae

The present invention provides a power unit for conveyance, having a main power source and a standby power source. The power unit has a thermal battery provided as the standby power source. The conveyance is provided with an electronic control system and the power unit for conveyance of the present invention, and electric power for operating the electronic control system is supplied to the electronic control system from the power unit for conveyances. By employing such a thermal battery as the standby power source, the standby power source does not require to be charged, thereby ensuring a long-term reliability of the standby power source.

Power unit for conveyance and conveyance provided with the power unit

The use of the Pb&mdash;Sn alloy containing Ag and Se of the present invention as a connecting part for connecting internal components makes it possible to improve the resistance of straps, poles and cell connectors to general corrosion and grain boundary corrosion, inhibit the occurrence of the stress corrosion cracking and enhance the alloy strength, thus providing a lead acid battery having an excellent reliability.

Connecting part for connecting internal components of lead acid battery

A lead-acid battery electrode plate is manufactured by consecutively supplying a lead or lead alloy sheet; leaving a part in the vicinity of the center of the sheet as a non-expansion portion and expanding both sides like mesh to form a grid body; filling active material paste into the grid body; and cutting the grid body to predetermined dimensions. In the lead-acid battery electrode plate, the non-expansion portion forms a current collector part of the electrode plate along an expansion portion in an up and down direction of the electrode plate. One or more openings are made in a part of the non-expansion portion. A part of the non-expansion portion is projected above the position of an upper margin of the cut expansion portion as a current collector lug part. When the current collector lug part is placed upside, the expansion direction is the width direction of the electrode plate.

Manufacturing method for a lead-acid battery electrode plate

A method for producing a grid for a lead storage battery has a first step, a second step and a cooling step performed between the first and second step. In the first step, lead alloy is sequentially rolled over a plurality of rolls. In the second step, the rolled sheet obtained at the first step is machined to produce a grid for a lead storage battery. In the cooling step, the rolled sheet is cooled so that (1) the surface temperature thereof is 10&deg; C. or lower at least once and (2) the total time during which the rolled sheet is exposed to an atmosphere of higher than 10&deg; C. is 10 hours or less.

Method for producing grid for a lead storage battery

Electrode plate for lead-acid battery

A defect inspection apparatus inspects a defect by a compare check method even if there is only one object substrate to be inspected. Further, if there are a plurality of object substrates to be inspected, the defect inspection apparatus corrects a reference pattern image in accordance with defect inspection using the compare check method. In application to a printed to wire board on which identical unit patterns are printed, unit patterns which are included in one row are defined as a mater area and the other unit patterns on the same printed wire board are defined as object areas. The master area is compared with each one of the object areas to thereby perform defect inspection. When there are a plurality of object substrates to be inspected, a pattern image is corrected utilizing results of comparison. By using a corrected pattern image as a master substrate image, defect inspection is performed on the other object substrates.

Method of and apparatus for inspecting pattern defects

A printed pattern is provided with a wiring pattern having a land and a through hole surrounded by the land. The wiring pattern and the through hole are read by a photoelectric image sensor to obtain a pattern image and a hole image, respectively. A pattern gauge image is defined by the pattern image, and a hole gauge image having a ring-like shape is obtained from the hole image. A logical product between the inversion image of the pattern gauge image and the hole gauge signal provides a protrusion region image. Since the hole gauge image has an isotropic contour, the minimum annular width of the land is detected, independent of the direction in which the through hole is deviated from the land.

Method of and apparatus for inspecting the minimum annular width of a

A sealed lead-acid battery which includes a container accommodating an assembled element. The assembled element has at least one electrochemically formed positive plate having a grid of an antimony-free alloy, wherein the plate is made of porous active material. The assembled element also includes at least one electrochemically formed negative plate having a grid of an antimony-free lead alloy, wherein the plate is made of a porous active material. A separator, having a plurality of projections on one or both side thereof, is inserted between the positive and negative plates. A layer of powder is placed between the positive and negative plates and around the assembled element. The powder is composed of a closely packed powder, which is acid-resistant and hydrophilic, and has gas channels within its interior. The powder is immobilized with an acid-resistant porous layer placed above the powder, wherein the porous layer is permeable to gases and liquids, and impervious to particles of the powder. Sulfuric acid electrolyte is impregnated and retained within the positive and negative plates and the powder layer in a substantially necessary and sufficient amount for charging and discharging the battery.

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Kyoto, Japan

Takao Omae