摘要:
A semiconductor substrate with no reduction in the effective usage area and mechanical strength, and non-uniformity of the resist film thickness, and method of manufacturing and using the same are obtained. A detection mark for detecting the crystal orientation of a silicon wafer having an outer perimeter entirely of a circular contour is formed at a predetermined region of the silicon wafer. The crystal orientation of the semiconductor wafer can easily be detected with the outer perimeter still taking a circular contour. Therefore, various problems encountered in a conventional semiconductor substrate having an orientation flat or notch such as reduction in mechanical strength and effective usage area, and non-uniformity of the resist film can be circumvented.
摘要:
A wheel supporting device includes: a hub unit that has a rotary ring having a first spline on its axially inner end face; and a joint that has an outer ring having a second spline, meshing with the first spline, on its axially outer end face. At least one projection included in a plurality of projections of the first spline projects in the axial direction by a larger amount than the remaining projections of the first spline. When a crest of the at least one projection contacts a crest of one of projections of the second spline, a play is caused between the rotary ring and the outer ring due to the at least one projection that works as a fulcrum.
摘要:
A rotation adjusting mechanism is provided in a power transmission path from a pulley to a rotation shaft and includes an elastic member and a clutch mechanism. The elastic member reduces a minute change in rotation generated in at least one of the pulley and the rotating shaft by its elastic deformation. The clutch mechanism is provided in an intermediate position of the power transmission path from the elastic member to the rotating shaft and configured to interrupt the power transmission from the pulley to the rotating shaft when a rotation speed of the pulley lowers below a rotation speed of the rotating shaft by a predetermined value or greater.
摘要:
An image capturing apparatus that commences a pre-shooting operation on a first stroke of a release button, executes a shooting operation on a second stroke of the release button, and stores generated image data in a connected storage medium. The image capturing apparatus includes a power supply unit adapted to supply power to the storage medium, and a controller configured to control the power supply unit so that the power supply to the storage medium is started in response to the first stroke of the release button going ON.
摘要:
An inspection method for inspecting beads provided on a tire building drum in process of production a pneumatic tire includes measuring a displacement amount in a radial direction on each of the beads lying axially on both sides of the drum with a distance sensor such as an eddy current sensor while rotating the drum, synthesizing displacement amounts so obtained on the beads on both the sides, calculating a harmonic of the displacement amounts in the radial direction of the beads by performing harmonic analysis on a resultant synthesized displacement amount, and determining whether the magnitude of the harmonic so calculated falls within a predetermined range.
摘要:
The outer diameter of a spline nut and the inner diameter of a nut body holding portion of a housing gradually decrease in the downward direction. A ball screw protection unit includes a nut body taper face that is formed in the outer peripheral face of the spline nut, a holding portion taper face that is formed in the nut body holding portion, and a disc spring that is provided at the upper end of the spline nut and that biases the spline nut in such a direction that a friction force between the nut body taper face and the holding portion taper face increases (downward direction).
摘要:
There is provided a one-way clutch unit that is simple in structure and compact. An annular recess 67 is provided in an inner periphery of a side of a deep groove ball bearing portion 55 of a first inner ring 7 of a first one-way clutch 1, and an end portion on the side of a deep groove ball bearing portion 65 of a second one-way clutch 2 is disposed in the annular recess 67. Thereby, the dimension in an axial direction of the one-way clutch unit is reduced by a dimension in the axial direction of the second one-way clutch 2 that is disposed in the annular recess 67.
摘要:
There is provided a compact one-way clutch unit that can perform connection and disconnection of power in two systems. An end portion on a side of a deep groove ball bearing portion 65 of a second one-way clutch 2 is disposed in an annular recess 67, which is provided at an end portion in an inner peripheral surface of a first inner ring 7, so that the dimension in an axial direction of a one-way clutch unit is reduced. Further, an outer peripheral diameter on a side of the deep groove ball bearing portion 65 is made smaller than that on the side of a one-way clutch portion 60 of a second outer ring 14 so as to reduce a diameter of the recess 67 and the outer peripheral diameter of the first outer ring 5 of the first one-way clutch 1.
摘要:
This invention relates to a rotating connector comprising an inner cylinder 2 and an outer cylinder 3 combined together to permit the relative rotation in a concentric state, and a flat cable 1 spirally housed in an annular space 20 formed between the inner cylinder 2 and the outer cylinder 3, and connected at its inner end to the inner cylinder 2 while being connected at its outer end to the outer cylinder 3, wherein the flat cable 1 is composed of a plurality of flat-type conductors 10 placed in parallel arrangement and an insulating coat layer 11 placed over the flat-type conductors 10, and the insulating coat layer 11 is formed by coating the flat-type conductor 10 with a thermoplastic resin by means of direct extrusion. According to the present invention, since the insulating coat layer 11 of the flat cable 1 is formed by coating the flat-type conductors 10 with the thermoplastic resin by means of direct extrusion as described above, it is possible to provide a rotating connector, which permits the smooth rotation without an increase in torque even in the high-temperature environment and is excellent in durability.
摘要:
A memory cell structure for a semiconductor device includes a capacitor for storing electric charge, a first transistor for controlling storage and release of charge in the capacitor, and a second transistor interposed in a conduction path which connects the capacitor and the first transistor to each other. The second transistor serves as a cut-off transistor for interrupting the electrical connection between a charge storing capacitor and the first transistor when the capacitor is in the charged state, to thereby prevent effectively the charge from leaking by way of the source region of the first transistor. A dynamic semiconductor memory device includes a memory cell array having a plurality of memory cells of this.