摘要:
In this parallel gripper suitable for gripping a work for a robot or the like, in which a pair of fingers are opened and closed by keeping the parallel condition between them by the transmission of the driving force of a fluid pressure actuator to the fingers by means of a power transmission mechanism, use is made of a pair of pistons, that are relatively slidable in a single cylinder bore under the action of fluid pressure, as the fluid pressure actuator, thereby obtaining substantially twice as large gripping force as in the case of empolying a single piston. Further, simplification in constitution and reduction in weight of the parallel gripper are achieved by constructing the gripper so as to supply a pressurized fluid to the pressure chamber formed between the pair of pistons in the cylinder bore, and by transmitting the driving force of both pistons that are driven in the mutually opposite directions to the fingers by means of a simple power transmission mechanism which employs levers as its principal components.
摘要:
In a slide actuator, a central guide rail having V-shaped grooves defined therein and opened at 90 degree angles, is mounted on a cylinder body. A slide table is brought into engagement with the guide rail. Guide members having V-shaped grooves defined therein are provided inside the slide table so that they are opposed to the grooves defined in the guide rail. Cylindrical roller bearings are alternately fitted at inclinations of 90.degree. in their corresponding channels defined by the opposed grooves. Thus, when the roller bearings are rolled, the slide table is displaced with higher accuracy and a load supported by the slide table is transmitted to the guide rail from the roller bearings.
摘要:
A method of producing the crystalline substrate having a concave-convex structure includes: (A) forming a transfer film by forming a concave-convex film on a support film on the surface having a concave-convex pattern thereon so that thickness of the residual film of the concave-convex film is 0.01 to 1 μm, the concave-convex pattern of the support film having concave parts with a width of 0.05 to 100 μm, a depth of 0.05 to 10 μm, and a ratio of the depth of the concave part to the width of the concave part of up to 1.5, (B) disposing the transfer film on the crystalline substrate, and transferring the concave-convex film onto the crystalline substrate to produce a crystalline substrate having the concave-convex film thereon, (C) etching the crystalline substrate having the concave-convex film thereon to form a concave-convex structure on the surface of a crystalline substrate.
摘要:
A method of producing the crystalline substrate having a concave-convex structure includes: (A) forming a transfer film by forming a concave-convex film on a support film on the surface having a concave-convex pattern thereon so that thickness of the residual film of the concave-convex film is 0.01 to 1 μm, the concave-convex pattern of the support film having concave parts with a width of 0.05 to 100 μm, a depth of 0.05 to 10 μm, and a ratio of the depth of the concave part to the width of the concave part of up to 1.5, (B) disposing the transfer film on the crystalline substrate, and transferring the concave-convex film onto the crystalline substrate to produce a crystalline substrate having the concave-convex film thereon, (C) etching the crystalline substrate having the concave-convex film thereon to form a concave-convex structure on the surface of a crystalline substrate.
摘要:
A load test machine includes a base block, at least a pair of posts rising from the base block, a cross head spanning between the pair of posts, and an actuator mounted on the base block or the cross head. The actuator is able to apply a load on a test piece positioned between the cross head and the base block. The cross head is secured to each of the posts via an elastic member, and the elastic member is constructed to be changeable in its jointing position with the cross head or with each of the posts to change a resonance frequency of the test machine.
摘要:
An entry board for use in drilling small holes in boards: the entry board comprises a lubricant layer of a mixture of a polyethylene glycol having an average molecular weight of at least 3000 to less than 10000, a polyethylene glycol having an average molecular weight of at least 10000 and trimethylolpropane formed over at least one surface of an aluminum base board with an undercoat layer of a partially saponified product of polyvinyl acetate provided between the lubricant layer and the base board. The partially saponified polyvinyl acetate has a degree of saponified 15 to 70 mole % and has an average molecular weight of 9000 to 50000. The adhesion of the lubricant layer to the base board is excellent, and the lubricant layer prevents cracking.
摘要:
An oxopyridinylquinoxaline derivative represented by the following Formula I or pharmaceutically acceptable salts thereof: ##STR1## wherein R.sup.1 is hydrogen, halogen, nitro, or trihalomethyl; R.sup.2 is hydrogen, halogen, nitro, cyano, trihalomethyl, carbamoyl, carbamoyl substituted with lower alkyl, sulfamoyl, or sulfamoyl substituted with lower alkyl; R.sup.3 is hydrogen, nitro, or halogen; R.sup.4 is hydrogen, lower alkyl, substituted lower alkyl, lower cycloalkyl, or substituted lower cycloalkyl; R.sup.5 's are substituents independently selected from the group consisting of halogen, nitro, cyano, lower alkyl, carbamoyl, and carbamoyl substituted with lower alkyl; and n is an integer of 0 to 4. The derivative works as an antagonistic agent against both the NMDA receptors and the AMPA receptors, so that it is effective as a therapeutic agent for neurological disorders caused by excitatory amino acids binding to the receptors.
摘要翻译:由下式I表示的氧代吡啶基喹喔啉衍生物或其药学上可接受的盐:其中R 1是氢,卤素,硝基或三卤代甲基; R2是氢,卤素,硝基,氰基,三卤甲基,氨基甲酰基,被低级烷基取代的氨基甲酰基,氨磺酰基或被低级烷基取代的氨磺酰基; R3是氢,硝基或卤素; R4是氢,低级烷基,取代的低级烷基,低级环烷基或取代的低级环烷基; R 5是独立地选自卤素,硝基,氰基,低级烷基,氨基甲酰基和被低级烷基取代的氨基甲酰基的取代基。 并且n为0至4的整数。该衍生物作为对NMDA受体和AMPA受体的拮抗剂起作用,因此其作为由与受体结合的兴奋性氨基酸引起的神经障碍的治疗剂是有效的。
摘要:
A coil of tapered wire for forming coil springs, formed by winding substantially in concentric loops a quench-hardened and tempered tapered wire having a successive arrangement of tapered wire segments each consisting of a thick section, two thin sections and two tapered sections connecting the thin sections to the opposite ends of the thick section, respectively. The tapered wire is subjected to a preforming action immediately before being wound in loops on a winding drum, to form plastic bends in the thick sections and plastic bends of a radius of curvature greater than that of the plastic bends in the thick sections so that the tapered wire is wound in substantially uniform, concentric circular loops on a winding drum. When the tapered wire is unwound from the coil and is subjected to a straightening process of a fixed straightening arrangement of a series of straightener rollers before being coiled in tapered wire coil springs on a coil spring forming mill, the thick sections undergo a straightening action greater than that acts on the thin sections, so that which the tapered wire unwound from the coil of tapered wire is straightened in a substantially straight tapered wire and thereby the tapered wire is coiled in tapered wire coil springs having a correct size and a uniform shape.
摘要:
Emission of a surface light source device is prevented from having brightness-unevenness, having a uniformalized brightness. A plurality of LEDs are disposed opposite to an incidence face of a light guide plate. A reflection sheet is disposed along a back face of the light guide plate while a cover member for the LEDs is disposed on an emission face in the vicinity incidence face. A light diffusion member, first and second light control members are laminated disposed along a part of the emission face which is not covered by the cover member. A top of the reflection sheet is secluded a predetermined distance L from the incidence face to provided a part which is not covered by the reflection sheet in the vicinity of the incidence face. The predetermined distance L may be given, for example, by L=2h·tan θ (where h=thickness of light guide plate at incidence face, θ=critical angle at an interface between light guide plate and air.
摘要:
The number of components of a high frequency power amplifier is reduced. A bias resistance ratio is adjusted in accordance with a change in the threshold voltage Vth of a transistor. A high frequency power amplifier has a plurality of amplifying systems. Each of these systems has an input terminal to which a signal to be amplified is supplied, an output terminal, a bias terminal, a plurality of amplifying stages which are sequentially cascaded between the input and output terminals, and a bias circuit connected to the bias terminal and each of the amplifying stages to apply a bias potential to the amplifying stage. The amplifying stage includes a control terminal for receiving an input signal and the bias potential supplied to the stage and a first terminal for transmitting an output signal of the stage.