Abstract: A method of detecting a state of an insulation resistance fall detector that includes: a detection resistance connected in series to an insulation resistance between a vehicle body and a power source; a condenser provided between the insulation resistance and the detection resistance; a pulse signal applying unit that applies a pulse signal to a serial circuit constituted by the insulation resistance, the condenser and the detection resistance; a low pass filter that filters a voltage of a connecting point between the coupling condenser and the detection resistance; and a fall detecting unit that detects a fall of the insulation resistance on the basis of the output of the filter, the method comprising the steps of: varying a pulse width of the pulse signal; and detecting the state of the insulation resistance fall detector on the basis of the output of the filter when the pulse width is varied.

Abstract: An insulation resistance drop detector 50 and a method of detecting a state of malfunction of the detector 50 are provided. When open of a coupling capacitor Co or malfunction of a low pass filter 53 is occurred, a time constant of the low pass filter 53 is decreased and a rising time of an output of the low pass filter 53 against an output of a pulse signal P1 becomes shorter than that in a state of normal. Thereby, malfunction of the detector 50 can be detected based on the output of the filter 53 corresponding to change of frequency of the pulse signal P1.

Abstract: A guide rail 13 is formed of a ceramic material having a specific strength of 2×107 mm or more and has a planar part with a surface roughness of 0.5 ?mRa or less. Further, the guide rail 13 has a recess 18 for avoiding interference with a part to be attached in which the corner 18a of the recess 18 is formed with a radius of curvature of 0.1 mm or more.

Abstract: A keybutton structure that is composed of the casing 18, the shielding case 10 that is provided with metal-type surface treatment, the keybutton 7 and the printed circuit board 8 that is mounted with a light emitting element, in that the light emitting element 22, such as the LED, is surrounded entirely by the rib 21 that is disposed upright on the shielding case 10. This configuration enables solving of the space problem as well as improvement in the luminous efficiency.

Abstract: There is provided a connector used for connecting a plurality of first terminals formed on a first electronic part to a plurality of respective second terminals formed on a second electronic part. The connector comprises an intermediate basis material having a spring characteristic, a plurality of first electrically conductive members provided on a first surface of the intermediate basis material, a plurality of second electrically conductive members provided on a second surface of the intermediate basis material, and wiring for connecting each of the first electrically conductive members to corresponding one of the second electrically conductive members.

Abstract: The present invention provides a rolling element capable of ensuring excellent corrosion resistance, and capable of maintaining a stable performance for a long time even in a case where a slight amount of a solution intrudes into the inside, with no occurrence of dry friction and the like between a rolling element and a raceway groove.

Abstract: An electrostatic chuck comprises a sample stage 9 provided with electrodes 1, 2 and 3 for applying n-phase alternating voltage wherein n is equal to or greater than 2, and a circuit for applying the n-phase alternating voltage. The present electrostatic chuck realizes smooth and speedy attraction/separation of the substrate without the need for a charge elimination process, and the present chuck solves the problem of substrate vibration.

Abstract: A tire air pressure abnormality warning device includes a transmitter for transmitting a signal of the air pressure of a tire measured by a pressure sensor, a portable device for opening and closing a door lock of a vehicle, and a vehicle-installed device for determining whether or not the signal from the transmitter indicates an abnormal air pressure of the tire and for driving the door lock by a signal from the portable device. The vehicle-installed device has a recording section for recording tire air pressure abnormality data. When the vehicle-installed device communicates with the portable device, it searches for any abnormality data from the recording section. If there is any abnormality data, it transmits a tire air pressure abnormality signal to the portable device. The portable device indicates a warning of abnormal air pressure of the tire by the tire air pressure abnormality signal using a warning indicating section.

Abstract: A guide rail 13 is formed of a ceramic material having a specific strength of 2×107 mm or more and has a planar part with a surface roughness of 0.5 &mgr;mRa or less. Further, the guide rail 13 has a recess 18 for avoiding interference with a part to be attached in which the corner 18a of the recess 18 is formed with a radius of curvature of 0.1 mm or more.

Abstract: An electrostatic chuck comprises a sample stage 9 provided with electrodes 1, 2 and 3 for applying n-phase alternating voltage wherein n is equal to or greater than 2, and a circuit for applying the n-phase alternating voltage. The present electrostatic chuck realizes smooth and speedy attraction/separation of the substrate without the need for a charge elimination process, and the present chuck solves the problem of substrate vibration.

Abstract: The cooling efficiency of a refrigerating chamber and a storage chamber is improved, and the cooling capability is prevented from degrading. A horizontal refrigerator 10 is comprised of an underlying refrigerator body 11 and an overlying show-case 12. The show-case 12 disposed on the top surface of a thermally insulated box 16 of the refrigerator body 11 is comprised of an outer box 37, an inner box 38 disposed within the outer box 37 spaced by a necessary space therefrom, and a heat insulating material 39 filled between both boxes 37, 38, and an opening 12a is formed only in a top portion. The opening 12a is opened and closed by a plurality of slidable doors 45. A cooling pipe 47 connected to a refrigerating mechanism is disposed in a meander form in contact with the outer surface on the insulating material side in the bottom and rear portions of the inner box 38, such that the entire inner box 38 is cooled by circulation of a coolant supplied from the refrigerating mechanism.

Abstract: An installation structure is so configured as to allow a panel-type display device to be installed in the following manner. A fixing frame is fixed and fastened to a rectangular opening portion of a wall in advance. After being placed in the fixing frame, the panel-type display device is pressed by a pressing member against the fixing frame.

Abstract: The cooling efficiency of a refrigerating chamber and a storage chamber is improved, and the cooling capability is prevented from degrading.

Abstract: A 590 MPa-class rolled steel shape of high strength and excellent toughness for use as a building structural member and a method of producing the high-tensile rolled steel shape are provided. Strength optimization by an alloy that elevates hardenability, texture refinement obtained by fine dispersion of Ti oxides and TiN owing to Ti addition, precipitation strengthening by Cu addition, and formation of a fine bainite texture by temperature-controlled rolling, cooling control and the like enable a high-strength, high-toughness rolled steel shape of high-strength and excellent toughness having mechanical properties of a tensile strength of not less than 590 MPa, a yield strength or 0.2% proof strength of not less than 440 MPa and a Charpy impact absorption energy at 0° C. of not less than 47 J, and method of producing the same.

Abstract: A button switch wherein switching operation of contact patterns 14 printed and wired on a printed circuit board 13 is performed by pushing a contact member 12 provided on a lower face of a pushing member of the button switch is constructed in such a manner that the above mentioned contact member 12 comprises a rubber piece, electrically conductive films formed on upper and lower faces of the rubber piece, and metal wires embedded in the rubber piece so as to interconnect the electrically conductive films, the obtained contact member 12 being bonded to the pushing member.

Abstract: An installation structure is so configured as to allow a panel-type display device to be installed in the following manner. A fixing frame is fixed and fastened to a rectangular opening portion of a wall in advance. After being placed in the fixing frame, the panel-type display device is pressed by a pressing member against the fixing frame.

Abstract: A structural steel excellent in wear resistance and fatigue resistance property, for use as a structural member of a bridge, pylon or the like erected in a shore region where there is concern about steel corrosion and fatigue at weld joint owing to scattering of sea salt particles or in a region where snow-melting salt is used, is provided at low cost and by a simple production method. The hot rolled structural steel contains, in percentage by weight, C: 0.02-0.20%, and further added with small amounts of Ni, Cu and Mo as essential elements, that is a rolled steel excellent in wear resistance and fatigue resistance property having a Ni/Cu concentration ratio of not less than 0.8, a steel surface internal oxide layer of not greater than 2 &mgr;m, and a Ni, Cu and Mo concentrated layer of a thickness of not less than 2 &mgr;m on the internal oxide layer.

Abstract: A liquid crystal projector, comprising: a liquid crystal panel; a light source for irradiating light onto an image formed on the a liquid crystal panel; a projection lens for enlarging and projecting the image projected from the liquid crystal panel; a cooler, such as a suction fan, for sending cooling air flow onto a panel surface of the liquid crystal panel; an air velocity sensor for sensing air velocity of the cooling air flow sent onto the liquid crystal panel; and a protection device for protecting the liquid crystal panel on a basis of a detected value of the air velocity measured by the air velocity sensor. The is further formed an air passage for passing the cooling air flow along with the panel surface of the liquid crystal panel, and the air velocity sensor is positioned in an exit portion of the cooling air flow passing through the liquid crystal panel.

Abstract: A telephone apparatus is connected to a plurality of telephone lines and has a transfer function for transferring a call among the plurality of telephone lines. The telephone apparatus includes circuit interfaces each of which has a 2-4 line substitution function and conducts an interface function between each of the plurality of telephone lines and a telephone apparatus internal circuit. A first amplifier amplifies a signal from a first telephone line and a second amplifier amplifies a signal from a second telephone line. A control unit compares the levels of the signals from the first and second telephone lines to control the amplification factors of the first and second amplifiers on the basis of a result of the comparison.

Abstract: An apparatus for optical measurement is formed as a one-piece molding. The apparatus has a reaction vessel and pre-treatment vessels, at least part of the partitioning wall between the both serves as an optical waveguide body, and a light absorber vessel is formed adjacent the reaction vessel (24). Simplification of the process of manufacture thus is attained. With a light absorber accommodated in the light absorber vessel, (25), reaction components of excitation light and other noise light components that are propagated through the optical waveguide body can be sufficiently attenuated to improve the S/N ratio of the optical measurement.