Abstract: A lithium secondary battery includes: a battery case, and an internal electrode body 1 contained in the battery case and including a positive electrode 2, a negative electrode 3, and a separator 4 made of porous polymer. The positive electrode and the negative electrode are wound and laminated through the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other. The battery case is composed of pure aluminum or aluminum alloy in which one or more components selected from manganese, magnesium, silicon and copper is added in aluminum. The lithium secondary battery has high weight energy density, is superior in safety, and is used for, particularly, an electric vehicle.

Abstract: A lithium secondary battery has small internal resistance and has good charge-discharge cycle characteristics, with a lithium transition metal compound being used as a positive active material. A portion of transition element Me in a lithium transition metal compound LiMeXOY to be used as a positive active material is substituted by not less than two substitution elements M selected from the group consisting of Li, Fe, Mn, Ni, Mg, Zn, B, Al, Co, Cr, Si, Ti, Sn, P, V, Sb, Nb, Ta, Mo, and W. To provide LiMZMeN-ZOY wherein M≠Me .

Abstract: A lithium secondary battery includes: a battery case, and an internal electrode body (1) contained in the battery case and including a positive electrode (2), a negative electrode (3), and a separator (4) made of porous polymer. The battery case is composed of pure aluminum or aluminum alloy in which one or more components selected from manganese, magnesium, silicon and copper is added to the aluminum. The lithium secondary battery has high energy density, is superior in safety, and is used for, particularly, an electric vehicle. Preferably the battery has a capacity of 50 Wh or more, and the following relationships are established: 0.004≦t/d≦0.04, where the battery case is cylindrical, its outer diameter is d (mm), and its wall thickness is t (mm); and C/(w·c)≦0.03, where current capacity is C (Ah), battery weight is w (kg), and specific heat of the battery is c(W/kg° C.).

Abstract: A lithium secondary battery includes a battery case, and an internal electrode body contained in the battery case and including a positive electrode and a negative electrode wound through a separator film made of porous polymer, and uses a nonaqueous organic electrolyte. Opposing pressure release mechanisms are disposed at both ends of the battery case in the winding direction of the positive electrode and the negative electrode. The lithium secondary battery is simple in fabrication, has small internal resistance, and is superior in safety. Preferably, the ratio of the total area of opening portions where the pressure release mechanisms operate to the battery capacity is kept within a predefined range.

Abstract: A lithium secondary battery includes: a battery case, and an internal electrode body 1 contained in the battery case and including a positive electrode 2, a negative electrode 3, and a separator 4 made of porous polymer. The positive electrode and the negative electrode are wound and laminated through the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other. The battery case is composed of pure aluminum or aluminum alloy in which one or more components selected from manganese, magnesium, silicon and copper is added in aluminum. The lithium secondary battery has high weight energy density, is superior in safety, and is used for, particularly, an electric vehicle.

Abstract: A lithium secondary battery comprises a case, an internal electrode body positioned inside the case, the internal electrode body comprising at least one positive electrode, at least one negative electrode and at least one separator interposed between the positive electrode and the negative electrode, the positive electrode and the negative electrode being electrically insulated from each other, at least one electrolyte contained inside the case, a first terminal electrically connected to the negative electrode, a second terminal electrically connected to the positive electrode, and at least one insulator positioned either between the case and at least one of the first and second terminals, the insulator comprising ethylene-propylene rubber.

Abstract: To provide a lithium secondary cell, which is excellent in productivity since a cell structure is simple and easy for assembly. Provided is a lithium secondary cell having: an internal electrode body including a positive electrode plate, a negative electrode plate, the positive electrode plate and the negative electrode plate being wound and laminated around an external periphery wall of a hollow cylindrical winding core, and inside the internal electrode body a nonaqueous electrolyte solution being impregnated, a cylindrical cell case contained in this internal electrode body 1 with both ends being opened, and two electrode caps sealing the above described internal electrode body 1 at both the open ends of this cell case.

Abstract: A lithium secondary battery includes a battery case, an internal electrode body contained in the battery case and including a positive electrode, a negative electrode and a separator made of porous polymer, the positive electrode and the negative electrode are wound or laminated. A working volume ratio of the positive active material and the negative active material obtained by the positive active material weight being divided by the negative active material weight is within the range from 40% to 90% of the theoretical working volume ratio. The lithium secondary battery has high safety as well as high energy density by controlling the working volume of an electrode active material and the dispersion of the distribution of the working volume and in particular is preferably used for a drive motor of an electric vehicle.

Abstract: A miniature microphone component comprises a miniature condenser microphone, conductive rubber contacts formed and fixed on a terminal area of the miniature microphone and a rubber casting (also called “bushing”) for protection against vibrations covering the circumference of the miniature microphone. To install the miniature microphone component, it is sufficient to insert the miniature microphone component into a small-size communication device so that the conductive rubber contacts formed and fixed on the terminal area of the miniature microphone are pressed against terminal portions on a circuit board. Thus, the working efficiency of the assembly can be considerably increased and the installation space can be minimized.

Abstract: A lithium secondary battery includes an internal electrode body including a positive electrode, a negative electrode, a separator, the positive electrode and the negative electrode being wound via the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other, an organic electrolyte, and a battery case containing the internal electrode body. A pipe is used as the battery case. The lithium secondary battery is excellent in reliability and can be produced at low processing costs.

Abstract: A lithium secondary battery includes an electrode body obtained by winding or laminating a positive electrode and a negative electrode via a separator, and a non-aqueous electrolyte solution. The battery satisfies the following Equation (1): E0/Cp+T1=T2<t . . . (1) where E0 (J/g) is energy quantity per unit weight at the time of full charging of said battery; Cp (J/° C.·g) is the specific heat of said battery; T1 (° C.) is a normal use temperature of said battery; T2 (° C.) is the highest elevated temperature of said battery; and t (° C.) is the lowest temperature at which said battery falls into an unsafe state.

Abstract: A lithium secondary battery includes an electricity generating portion in which positive electrode 60 and negative electrode 61 form a laminate through separator films 62 made of porous polymer so that the positive electrode 60 and the negative electrode 61 do not come in direct contact with each other, leads 65, 77 which are respectively connected to plural portions of the positive electrode 60 and the negative electrode 61 to make electricity collection, and a low melting point alloy member 76 as a current break mechanism being inserted in a current path of the inside of the battery, which is melted to break the current path when the temperature of the battery is raised over a predetermined temperature.

Abstract: A measuring device, such as a planimeter, having an increased measurable range for measuring a figure without increasing a length of the measuring device. The measurable range of a planimeter is based upon the a physical length of the planimeter. In order to increase the measurable range of the planimeter, the planimeter is provided with an operation control switch that functions to set a measurement mode of a computer associated with the planimeter to a suspend mode, temporarily halting a measurement operation, so that the planimeter can be shifted to another position. Thus, the measuring range of the planimeter is increased without increasing the physical length of the planimeter.

Abstract: An apparatus (10) includes a plurality of parts which are clamped together by a fastener (24). The clamped parts include a reaction canister (16), an air bag (12) inside the canister (16), a retainer frame (60) inside the air bag (12), and a retainer sleeve (102 or 116) outside the canister (16). The fastener (24) extends through the retainer sleeve (102 or 116). The apparatus (10) further includes a deployment structure (18) supported for limited movement relative to the canister (16). A panel portion (70) of the deployment structure (18) extends across a deployment opening (48) in the canister (16). A mounting portion (72 or 74) of the deployment structure (18) projects from the panel portion (70). The retainer sleeve (102 or 116) extends through an aperture (96) in the mounting portion (72 or 74) of the deployment structure (18), and is spaced fully from the deployment structure (18) within the aperture (96).

Abstract: An apparatus for measuring a dimension or aspect of a figure, such as a linear planimeter or a polar planimeter, for measuring a size and shape of a figure and having a calibration mode. The apparatus includes a carriage supported on a pair of rollers for movement along an axis. One end of a measuring lever is pivotally mounted to the carriage. A tracing member having a magnifying lens for tracing a figure is provided on the other of the measuring lever. A computer having a calibrating mode changing switch and a correction value recording switch are provided on the carriage. To calibrate the apparatus, the apparatus is switched into the calibrating mode by the calibrating mode changing switch and correction values are calculated based on a reference figure. Each correction value is stored in a nonvolatile memory of the computer.

Abstract: An apparatus (20) for attaching an air bag (22) and an inflator (24) to a vehicle steering wheel (26) comprises a mounting plate (28) which is connectable with the steering wheel. The air bag (22) has a mounting portion (44) which encircles an inlet opening (46) into the air bag. A bag ring (162) clamps the mounting portion (44) of the air bag (22) and a flange (104) on the inflator (24) between the bag ring and the mounting plate (28). Only three fasteners (168) substantially equally spaced about a central axis (C) of the bag ring (162) secure the mounting plate (28) and bag ring (162) together to clamp the inflator flange (104) and mounting portion (44) of the air bag (22) between the mounting plate (28) and bag ring (162).

Abstract: An apparatus for enclosing an air bag (38) on a steering wheel (22) includes an inner cover (34) at least partially enclosing the air bag (38) and having a tear seam central portion (50) along which the inner cover ruptures upon inflation of the air bag (38). An outer cover (36) at least partially encloses the inner cover (34) and the air bag (38) and includes a tear seam central portion (49) with a length substantially equal to the length of the tear seam central portion (50) in the inner cover (34). A horn switch (58) is disposed between the inner and outer covers (34 and 36) for effecting operation of a horn. The horn switch (58) includes first and second tear seams (64, 65) aligned with the tear seam central portions (50 and 49) in the inner and outer covers (34 and 36). The first and second tear seams (64, 65) in the horn switch (58) have a combined length substantially less than the length of each of the tear seams (49 and 50).

Abstract: A vehicle safety apparatus (10) includes an air bag (16), a mounting plate (14) for mounting the air bag in the vehicle, and a retaining ring (18). The air bag (16) is clamped between the retaining ring (18) and the mounting plate (14). A recess (130) is formed on a first one of the retaining ring and the mounting plate (14). A projection (100) on a second one of the retaining ring (18) and the mounting plate (14) forces a portion of the air bag (16) into the recess (130) to resist movement of the air bag relative to the retaining ring and the mounting plate.

Abstract: A device for finding the centroid coordinates of a figure that can calculate the centroid from a single time measurement of the figure and display the calculated centroid of the figure. The measuring device comprises a main body having a roller capable of running in a single direction and a measuring lever pivotably supported by the main body so as to be rotatable right or left from the running direction of main body on a horizontal plane. In the measuring device, the main body has a display and a calculating circuit. The tracer of the measuring lever traces the contour of the figure to measure the coordinates, areas, and lengths of the figure. At the same time, the calculating circuit computes the geometrical moments of areas successively and sums the geometrical moments of the areas. Finally, the calculating circuit divides the summed geometrical moment of the areas by an area of the figure to obtain the coordinates of the centroid of the figure.