摘要:
A feature that contributes to an improvement in the attachment to an impact tool of a dust collection device that is attached to the impact tool and that collects dust particles that said impact tool generates. The dust collection device collects dust that the impact tool generates and is attached to said impact tool that, in the lengthwise direction, linearly operates a tool bit that is mounted to the tip region of a tool body. The dust collection device has: a dust collection unit that has a dust intake port at the tip; and a dust transfer unit that is connected with the dust collection unit in order to transfer dust sucked in from the dust intake port towards the downstream side. The dust collection unit is held by the shaft section of the tool bit, and the dust transfer unit is held by the tool body.
摘要:
An epoxy resin composition suitably used for a prepreg which can complete curing in a short time even at a low temperature and secure a sufficient usable period under preservation at room temperature, in comparison with conventional epoxy resin compositions. An epoxy resin composition comprising at least one of an epoxy resin, an amine compound having at least one sulfur atom in the molecule thereof, and a reaction product of an epoxy resin and an amine compound having at least one sulfur atom in the molecule thereof, and an amine compound having at least one sulfur atom in the molecule thereof, and a urea compound and a dicyandiamide, wherein each of the contents of the sulfur atom and the urea compound in the epoxy resin composition is respectively 0.2 to 7% by mass and 1 to 15% by mass.
摘要:
A color signal processing apparatus includes a total amount calculating unit, a limit value calculating unit and a correcting unit. The total amount calculating unit calculates a total amount value of an input color signal in an output device color space which has, as color components, colors of coloring materials used in an output device. The limit value calculating unit calculates a limit value for limiting a total amount of a color signal, in accordance with the calculated total amount value. The correcting unit corrects the input color signal in the output device color space so that the total amount value of the input color signal becomes the calculated limit value or less.
摘要:
In a disc grinder, a spindle mounted with a grindstone intersects an output shaft of an electric motor. The disc grinder includes the three-point pressing continuously-variable transmission between the output shaft of the electric motor and a bevel gear train. The bevel gear train is used for deceleration. The traction grease having a high traction coefficient is used as the lubricant of the traction drive. A grease reservoir or felt members arranged in sliding contact with the pressing parts are disposed in the transmission case.
摘要:
An electrical power tool may include a speed change device that is capable of being automatically changed as an external torque applied to a spindle is increased. In a high speed low torque mode before an automatic speed change, an extremely high output rotation speed in which an output torque sufficient to progress the screw tightening operation to the end cannot be generated is set. The output rotation speed before the speed changing operation is set in a range of about 4.5 times to 6.0 times the output rotation speed after the speed changing operation. Thus, in an initial stage of the screw tightening operation, it is possible to quickly performing the operation with a high speed rotation than ever before. Conversely, after the automatic speed change, it is possible to complete the screw tightening operation with the large output torque.
摘要:
A prepreg is provided capable of being a composite material having suitable high heat resistance, impact resistance, and mechanical properties under high temperature and high humidity conditions. As the matrix resin, a composition including a specific epoxy resin component (A), a specific bifunctional epoxy resin (B), a specific tetrafunctional epoxy resin (C), and a specific aromatic amine compound (D) at specific proportions are used. Particularly, as the epoxy resin component (A), one obtained by mixing and heating a bifunctional epoxy resin (a1), a trifunctional epoxy resin (a2), a phenol compound (a3), and a specific polyamide resin (a4) is used so as to be able to solve the above-described problems.
摘要:
An electromagnetic actuator includes; a coil for excitation; a stator excited with different magnetic poles by energization of the coil; a rotor magnetized with different magnetic poles in a circumferential direction thereof, and rotated by a magnetic force generated between the rotor and the stator; and an outputting member rotated in conjunction with the rotor and outputting rotational movement of the rotor to a first blade and a second blade. The rotor and the outputting member are jointed by welding and a welding portion of the rotor lies in a boundary of the magnetic poles thereof.
摘要:
The invention has been made to provide a flow control valve capable of preventing adhesion between a fixed core and a movable core and increasing an attractive force, so that flow control can be performed with high accuracy. In a flow control valve 10, a first fixed core 23a is fixed in an upper part of a coil bobbin 21, a second fixed core 23b is fixed in a lower part of the coil bobbin 21, and the movable core 24 is formed at its lower end with a flange 24a having a diameter larger than an inner diameter of the coil bobbin 21. The movable core 24 is placed inside a cylindrical part 28a of the flared pipe 28 so that a distance D1 between the first fixed core 23a and the movable core 24 is larger than a distance D2 between the flange 24a and a disc part 28b of the flared pipe 28.
摘要:
An epoxy resin composition suitably used for a prepreg which can complete curing in a short time even at a low temperature and secure a sufficient usable period under preservation at room temperature, in comparison with conventional epoxy resin compositions. An epoxy resin composition comprising at least one of an epoxy resin, an amine compound having at least one sulfur atom in the molecule thereof, and a reaction product of an epoxy resin and an amine compound having at least one sulfur atom in the molecule thereof, and an amine compound having at least one sulfur atom in the molecule thereof, and a urea compound and a dicyandiamide, wherein each of the contents of the sulfur atom and the urea compound in the epoxy resin composition is respectively 0.2 to 7% by mass and 1 to 15% by mass.
摘要:
A receptacle type semiconductor laser module (TOSA) includes a semiconductor laser, a lens, and a fiber stub. The fiber stub has a slantwise cut surface to which a emission light emitted from the semiconductor laser and passing through the lens is incident. The cut surface is arranged in a position deviated from the focus of the lens in the direction of the optical axis of the fiber stub. The semiconductor laser module further includes a fixed optical attenuator arranged on a path of an emission light of the semiconductor laser and having an incident surface being oblique to an optical axis of the semiconductor laser. By such a configuration, a coupling fluctuation caused by an eccentricity of the optical fiber cord connected to the fiber stub and a near-end reflection can be suppressed.