摘要:
Disclosed is a probe for use in a scanning tunneling microscope which can measure a macromolecule, i.e., a protein molecule. The probe is manufactured by covering a metal wire having a sharp end with a thin organic film, removing an end of the metal wire by an electric field evaporation process, electrodepositing metal ions on the metal wire and removing a portion of the organic film. A monomolecular film is formed on the surface of a metal wire by chemically adsorbing a chlorosilane based chemical adsorbent. Only a tip of the chemically adsorbed film is removed by the electric field evaporation procedure, and the metal ions are electrodeposited on the tip of the metal wire. As a result, a sharp metal tip is formed. After that, the chemically adsorbed film is removed by alkyl treatment.
摘要:
A heat-type flow sensor is provided on the upstream side of a Venturi portion formed in an air-intake path and in an air bypass communicating with the Venturi portion. An electromagnetic device is provided to control the amount of air flowing in the air bypass so that the output of the heat-type flow sensor converges to a set level. This electromagnetic device drives a fuel-scaling valve to scale fuel in accordance with the change of the amount of air supplied to the engine, and this scaled fuel is continuously injected into the air-intake path.
摘要:
An accelerator pump for a carburetor comprises a piston assembly inserted in a cylindrical well formed in a carburetor body, a link mechanism for actuating the piston assembly in response to movement of a throttle valve, and a tapered stopper. The piston assembly is separated from the link mechanism and engaged with it only when accelerated. The tapered stopper is inserted in a hole made in said carburetor body, which hole is perpendicular to the cylindrical well, passing through a hole made in the piston assembly. A gap defined between the tapered stopper and the periphery portion of the hole of the piston assembly determines the stroke of the piston assembly. Further, the gap is adjusted by axial movement of the tapered stopper. The tapered stopper is locked with sealing material after being adjusted so that any user can not re-adjust the tapered stopper.
摘要:
A method for generating electric power including the steps of: (a) preparing a solar cell having a condensing lens and a solar cell element, wherein the solar cell element includes an n-type GaAs layer, a p-type GaAs layer, a quantum tunneling layer, an n-type InGaP layer, a p-type InGaP layer, a p-type window layer, an n-side electrode, and a p-side electrode, and satisfies the following equation (I): d2
摘要:
A fixed type constant velocity universal joint is capable of, without involving decreases in load capacity of an inner joint member (inner member) and in spherical area, increasing rigidity of a cage and stabilizing durability. The cage has four pockets including a pair of long pockets with large circumferential intervals and a pair of short pockets with small circumferential intervals. The pair of long pockets can be shifted by 180 degrees along a circumferential direction, and the pair of short pockets can be shifted by 180 degrees along the circumferential direction. The long pockets and the short pockets are arranged alternately to each other along the circumferential direction. Two balls are accommodated in each of the long pockets, while one ball is accommodated in each of the short pockets. A cutout portion is provided to an inner end portion of at least one of the track grooves of the inner member.
摘要:
A fixed constant velocity universal joint is made compact, has little decrease in load capacity even at an operating angle, and can improve high angle strength and durability through lessening instances in which a ball runs over a track at a high angle. A cage includes four pockets, a pair of long pockets of which a circumferential direction spacing is wide and a pair of short pockets of which the circumferential direction spacing is narrow. The long pockets are shifted by 180 degrees along a circumferential direction and the short pockets are shifted by 180 degrees along the circumferential direction. The long pockets and the short pockets are alternately disposed along the circumferential direction. A long pocket houses two balls. A short pocket houses one ball. An offset amount in the cage is made large to be almost the same as an offset amount of track grooves. Track grooves on a joint inner side are deepened and cage thickness on an opening side is increased.
摘要:
Provided is a fixed type constant velocity universal joint which is capable of reducing the size and weight while keeping the strength of a cage, and is also capable of improving the high angle strength and the durability. In the fixed type constant velocity universal joint, a center curvature of an outer spherical surface (28a) of a cage (28) is offset to a joint opening side with respect to a joint center, and a center curvature of an inner spherical surface (28b) of the cage (28) is offset to a joint back side with respect to the joint center, at regular distances in opposite sides to each other in the axial direction, respectively. An offset angle θCAGE of the cage (28), which is defined by lines that connect the center curvature of the inner spherical surface (28b) and the center curvature of the outer spherical surface (28a) of the cage (28) and centers of the torque transmission balls (27), and a line that connects the centers of the torque transmission balls (27) and the joint center in a state where a joint operating angle is 0°, is set in a range of 2.7°≦θCAGE≦5.7°.
摘要:
An ink jet head (1), a substrate (13) receiving a liquid drop (2) discharged from the ink jet head (1), a device for irradiating or reflecting light from a nozzle hole or its vicinity of the ink jet head (1) toward the substrate (13), a position moving device (10) for controlling a relative position between the ink jet head (1) and the substrate (13), and a control device (9) for discharging a liquid from the ink jet head (1) are included. A light-receiving element (6) for recognizing a position of the ink jet head (1) is disposed behind the substrate (13), when seen from the ink jet head (1), the substrate (13) has a transparency at least to a degree that the irradiated light or the light reflected from the nozzle hole or its vicinity toward the substrate (13) enters the light-receiving element (6), and the light-receiving element (6) senses the irradiated light or the light reflected from the nozzle hole or its vicinity toward the substrate (13). Consequently, even if the distance between the ink jet head and the substrate is small, the relative position between the ink jet head and the substrate is adjusted accurately.
摘要:
In a drive shaft installed in a mounted type vehicle to traverse uneven terrains and adapted to transmit drive power to wheels through constant velocity joints J1 and J2 on the inboard and outboard sides, rubber boots are used as constant velocity joint boots.
摘要:
A power transmission shaft such as a spline shaft and a serration shaft is provided which has improved static strength and fatigue strength. In a power transmission shaft, a diameter expansion surface is formed in a valley section of a tooth on the opposite side of a shaft end. First blunt sections in the shape of a curved surface are formed in corners between the diameter expansion surface and a tooth surface adjacent to the diameter expansion surface, in order to blunt edges.