Abstract: A limit switch has a housing having an opening in a front surface of the housing, and a connection hole in which a lead wire is drawn made in a bottom surface of the housing, a switch main body fixed in the housing, a front surface of which is vertically partitioned into a plurality of stages, a pair of fixed contact terminals embedded at each of the stages, an operation shaft exposed from a ceiling surface of the switch main body, a contact that is opened and closed by driving the operation shaft in a shaft center direction, and a projection provided between the fixed contact terminals embedded at the stages of the front surface of the switch main body.

Abstract: A fixing component for a switch including a flange, a ring attachment, and a screw attachment, the flange including a projection provided on an outer peripheral surface, the screw attachment including, on an inner peripheral surface, an insertion area into which the projection of the flange is inserted, a projection engaging part into which the projection of the flange is fitted, and an interference projection which is formed between the projection engaging part and the insertion area and has a smaller inner diameter than diameters of the projection engaging part and the insertion area, the projection of the flange including a first projecting portion and a second projecting portion where the first projecting portion is fitted into a guiding groove, and the second projecting portion is configured to traverse the interference projection to be fitted into a fitting groove when the flange and the screw attachment are rotated relatively.

Abstract: Provided is a detachable generator device which can change the installation location with ease and which can effectively use a solar cell to generate electric power. The detachable generator device includes: a film-like solar cell; and attaching/detaching means for allowing the film-like solar cell to be attached to and detached from an attachment object at an installation location. The attaching/detaching means includes an adhesive film having an attaching/detaching surface which develops Van der Waals force to enable repeated affixation, or an electrostatic chuck for forming an attaching/detaching surface by turning on/off a voltage source connected to an attraction electrode sandwiched between two insulating layers to freely develop electrostatic attraction on a surface of at least one of the insulating layers.

Abstract: A high separation efficiency column 10 for chromatography and a manufacturing method thereof are provided. The column 10 for chromatography includes a first substrate 11 having a plurality of pillars 22 formed on one surface thereof and a second substrate 12 bonded to the one surface of the first substrate 11 and constituting a flow path 13 together with the plurality of pillars 22 formed on the first substrate. At least a surface of each pillar is formed in a porous shape.

Abstract: A switch includes a switching mechanism, an operating mechanism with a key which normally causes the switching mechanism to be in a switched-off condition when it is pulled out and to be displaced against a biasing force to be in a switched-on condition when the key is inserted, and a locking mechanism for maintaining the switching mechanism locked in the switched-on condition and releasing it from the locked condition if a load greater than a specified magnitude is applied to the key while the switching mechanism is locked such that the switching mechanism is set back in the switched-off condition. The switching mechanism may be contained in a head case attached to a main case containing the operating mechanism. The main case also includes a forcing mechanism which tends to force the switching mechanism in the switched-off condition.

Abstract: A switch includes a switching mechanism, an operating mechanism with a key which normally causes the switching mechanism to be in a switched-off condition when it is pulled out and to be displaced against a biasing force to be in a switched-on condition when the key is inserted, and a locking mechanism for maintaining the switching mechanism locked in the switched-on condition and releasing it from the locked condition if a load greater than a specified magnitude is applied to the key while the switching mechanism is locked such that the switching mechanism is set back in the switched-off condition. The switching mechanism may be contained in a head case attached to a main case containing the operating mechanism. The main case also includes a forcing mechanism which tends to force the switching mechanism in the switched-off condition.

Abstract: A analog-to-digital converting device includes an analog-to-digital converting operation control unit for temporarily stopping an analog-to-digital converter in response to a trigger signal applied thereto and for restarting the analog-to-digital converter by imposing the operation conditions, which have been initially set up, on the analog-to-digital converter again. The device can forcefully terminate a scanning operation and restart analog-to-digital converting operations in a scan mode under the initially set up operating conditions without having to use an interrupt program executed by a CPU.

Abstract: A microspherical packing for liquid chromatography, which comprises a porous silicon carbide having numerous through-pores, and a process for producing said microspherical packing.

Abstract: A packing material for liquid chromatography is produced by mixing 1.0 part by weight of carbon black, 0.5 to 2.5 parts by weight of one or a mixture of a synthetic resin which can be graphitized by heating and a toluene- or benzene-soluble component of pitches, and an organic solvent to obtain a mixture. The carbon black has a particle diameter of 12 to 40 nm, a specific surface area of 50 to 650 m.sup.2 /g, a DBP oil absorption amount of 50 to 150 ml/100 g. The synthetic resin is one selected from phenol resin, furan resin, furfural resin, divinylbenzene resin and urea resin. The pitches are ones selected from petroleum pitches, coal-tar pitches and liquefied coal oil. The mixture is granulated by spray granulation or emulsion granulation to obtain granules whose ratio L.sub.min /L.sub.max of a minor axis diameter L.sub.min to a major axis diameter L.sub.max is 0.90 to 1.0. The heat treatment of the granules is also made in an inert gas under pressure.

Abstract: A packing material for reversed phase chromatography, which comprises silica gel with its entire surface substantially coated with repeating units of a polycarbosilane of the formula (I): ##STR1## wherein R.sub.1 is an octyl group, an octadecyl group or a phenyl group, R.sub.2 is a methyl group or a methylene group, and n is a positive integer.

Abstract: A switch structure suitable for a compact switch device is disclosed. The switch structure is formed of a push button, a switch body switched in correspondence with a pressing operation of the push body and a switch base or a switch holder holding these elements unitary, and a spring member which is elastically deformed in correspondance with the pressing operation of the push button is provided between the push button and the switch body. The switch holder has a fixing member detachably engaged with the switch body for fixing the switch body. The spring member provided between the push button and the switch body makes the pressing stroke longer by the amount of elastic deformation of the spring member. A fixing member provided in the holder fixes surely and easily the switch body in the holder.

Abstract: This invention provides a pushbutton switch which produces a click sound, the loudness of which is easily variable. In response to the vertical movement of operating cams of a pushbutton, a plate spring moves up and down. The moment when the edge of the operating cams trips over click spring portions of the plate spring, a force is applied to the plate spring so that the plate spring hits the inner top wall or bottom wall of a housing. In this manner, the pushbutton switch provides both a snap feeling and a click sound.

Abstract: The steps of handling ice cans in an ice making plant, such as placing the ice cans in alignment within one or more ice tanks, transferring ice cans each containing formed ice block to a stripping-off area, and placing and separating of the cover lid relative to ice can units, are automatically performed by an overhead travelling crane.Particularly, several ice can units are placed in the ice tank such that pairs of lugs provided on each ice can unit are arrayed in two straight lines to enable the overhead crane to selectively lift the ice cans.In order to produce high-quality ice blocks which are completely transparent through to the core portion thereof, each ice can is correlated with means for agitating ice making water contained therein and is connected with a piping for exchanging core water, in which impurities or foreign particles are likely to gather, with fresh water.The stripping-off of the ice blocks from the ice cans is also performed by an automatic system.