摘要:
A power tool includes a motor, a housing that accommodates the motor, a switch that supplies power to the motor, a switch lever that is provided movable relative to the housing to selectively turn ON and OFF the switch, and an off-lock member that is provided movable relative to the switch lever. The off-lock member includes a first engaging part and a second engaging part that are engageable with the housing.
摘要:
A semiconductor package providing with a printed circuit board and a semiconductor device, including a semiconductor substrate having a surface provided with an external connection electrode and mounted on the printed circuit board, and, a surface opposite that with said external connection electrode, abrased with a mirror finish and reinforced with a back-surface reinforcement.
摘要:
A solid xylylenediamine solidified in a container is extremely excellent in storage stability as compared with a liquid xylylenediamine, and is less degraded by discoloration even when stored in an atmosphere containing oxygen. By charging a liquid xylylenediamine into a container, solidifying the liquid xylylenediamine into a solid xylylenediamine in the container under cooling without delay after the charging, and storing the solid xylylenediamine in the container while maintaining the xylylenediamine in a solid state, the xylylenediamine is stored for a long period of time without causing deterioration of quality such as discoloration.
摘要:
The polyamide resin of the present invention is produced by the polycondensation of a dicarboxylic acid component and a diamine component containing xylylenediamine and bisaminomethylcyclohexane in a total amount of 70 mol % or higher. The polyamide resin contains impurities having a boiling point of from 150 to 300° C. at ordinary pressure and a solubility parameter of from 8 to 16 in a total amount of 0.3% by weight or lower based on the weight of the polyamide resin. The polyamide resin is free from various inconveniences due to inclusion of the impurities, and suitably used in applications for molding materials, bottles, sheets, films and fibers.
摘要:
A semiconductor device having a plurality of externally connecting electrodes arranged on a semiconductor chip includes on-chip electrodes, resin members formed separately from each other and provided corresponding to the plurality of externally connecting electrodes, and interconnections connecting the corresponding on-chip electrode and the corresponding externally connecting electrode. Such separately formed resin members for the externally connecting electrodes allow relaxation of thermal stress produced in the externally connecting electrodes.
摘要:
A method of biodegradation of a polluting substance by a microorganism is disclosed, wherein the microorganism is an auxotrophic microorganism and the action of the auxotrophic microorganism is controlled by the amount of a required nutrient for the auxotrophic microorganism. A carrier for supporting an auxotrophic microorganism for use for biodegradation contains a required nutrient for the auxotrophic microorganism.
摘要:
An anti-thrombogenic blood treating system, comprising selectively permeable hollow yarn membranes made of a composition containing a copolymer with polyethylene oxide component, and headers, catheters and circuits respectively covered on the blood contact surface with a heparinized hydrophilic copolymer containing vinyl chloride as a component monomer or a hydrophilic copolymer with polyethylene oxide component, in combination. All the blood contact surfaces are made anti-thrombogenic to allow, for the first time, the long-time extracorporeal circulation without intracorporeal administration of heparin.
摘要:
A heat-sensitive transfer medium comprises a support and at least two heat-transferable ink layers including a first and a second ink layer. The first ink layer has relative adhesions with the second ink layer and the support which are reverse at a higher temperature from those at a lower temperature. When the heat-sensitive transfer medium is superposed with paper, a heat energy is applied, and the transfer medium is separated from the paper; the second ink layer is selectively transferred or both the first and second ink layers are transferred to the paper depending on the length of time from the heat application until the separation of the transfer medium, whereby two color images can be formed by a single transfer medium.
摘要:
A reduced size and power dot matrix printing head having a chair shaped yoke with opposed off-set portions. Electromagnets are secured to the inner sides of the opposed off-set portions of the yoke permitting staggering of the electromagnets. Heavy biasing springs for securing the print pins in an inoperative position are avoided reducing the size and power of the electromagnets needed resulting in a further reduction in the overall size and power of the dot matrix printing head.