摘要:
The card connector has an eject operation detection switch SW arranged to turn on immediately after the ejection button has begun to be pressed, and an eject operation mechanism arranged to, in response to the pressing operation of the ejection button, start a card eject operation after the eject operation detection switch SW has turned on. This card connector reliably avoids a card error even when the ejection button is erroneously operated, thereby preventing a data loss.
摘要:
An ultrasonic vibration bonding tool comprising a square bar-like horn body, bonding working portions projecting from the upper and lower surfaces of the horn body at the central maximum vibration amplitude point, and crooked support portions projecting from front and rear surfaces of the horn body at the two minimum vibration amplitude points which are separate the same distance from the bonding working portions on both sides. Proper bonding can be carried out with this ultrasonic vibration bonding tool.
摘要:
An agent for preventing scale formation and a method for preventing scale formation include a polymer which has at least 50% of N-vinyl formamide units or N-vinyl acetamide units and a phosphorus compound added to water in a cooling water system, a boiler water system, or the like. The scale preventing agent and scale preventing method of the present invention are effective in preventing the adherence of various types of scales which are generated in cooling water systems, boiler water systems, and the like. In particular, the present invention is effective in preventing the adherence of silica and calcium scale.
摘要:
An ultrasonic vibration bonding chip mounter includes a chip carrying unit arranged above a chip supply unit, a prealignment unit and a mounting unit which are arranged in a row and having a movable table which can move back and forth in a direction parallel to a direction where these units are arranged, a pick-up unit, attached to the movable table, for transferring a chip from the chip supply unit to the prealignment unit, and an ultrasonic vibration bonding unit, attached to the movable table, for transferring the chip from the prealignment unit to a mounting unit so that the chips are transferred from the chip supply unit to the prealignment unit and further to the mounting unit by the reciprocation of the movable table one by one.
摘要:
A sludge dehydrating agent which is excellent in storage stability and prevented from becoming water-insoluble during storage and hence can be distributed in the market securely by solving the problem of the conventional dehydrating agents comprising amphoteric polymers that they undergo deterioration and become water-insoluble when stored for long, thus becoming substantially unusable. This dehydrating agent comprises a copolymer composed of cationic vinyl monomer units, vinylic carboxylic acid monomer units and nonionic vinyl monomer units and a salt of a group IIA metal of the periodic table. Preferable examples of the vinylic carboxylic acid monomer include acrylic, methacrylic and crotonic acids, while those of the nonionic vinyl monomer include acrylamide and methacrylamide. The metal salts usable herein include those of mineral acids and organic carboxylic acids, and preferable mineral acid salts include calcium chloride, magnesium chloride and magnesium sulfate. Preferably, the amount of the cationic vinyl monomer ranges from 10 to 60 mole %, while that of the vinylic carboxylic acid monomer from 10 to 45 mole %. Preferably, the molar ratio of the cationic vinyl monomer to the vinylic carboxylic acid monomer ranges from 0.3 to 3.0, while that of the metal salt to the carboxylic acid monomer from 0.2 to 2.0. The dehydrating agent may further contain an inorganic coagulant.
摘要:
A shield connector has a metal shell fitted onto one end of a connector body. The one end of the connector body is provided with a metal grounding piece adapted to connect the metal shell to a wiring board. The metal shell is provided with a receiving port for receiving the metal grounding piece. A short claw formed on the metal grounding piece is pressure-inserted into the receiving port in order to provide an electrical connection between the metal shell and the metal grounding piece.
摘要:
Method and apparatus of stabilizing uniformity of a static magnetic field in a magnetic resonance imaging apparatus, wherein before adjustment of uniformity of the static magnetic field and before each actual imaging operation, pulse-like gradient magnetic fields are applied to a static magnetic field generating magnetic circuit at a maximum output level of power supplies for generation of gradient magnetic fields so as to magnetize the static magnetic field generating magnetic circuit to constant magnetization intensity.
摘要:
The present invention relates to a computer system which can store assembly information and component information for components to be automatically inserted by an insertion machine into a printed board, which can perform required operations based upon the information stored, and which can display and output results of the processings. In the present method, the system checks for possible mechanical interference, when inserting a component, between an insertion head and other components having the possibility to be inserted prior to the component prepares preceding relations of insertion order from the results of an interference checking, selects the components which cannot be inserted automatically according to the preceding relations of insertion order, and modifies insertion processes or insertion directions thereof, decides insertion order of the components according to the modified insertion processes or the insertion directions, and, at last, automatically prepares and outputs numerical control data relating to the automatic insertion of said components.
摘要:
A multi-cell radiation detector constructed such that a first group of electrodes to which is applied high voltage and a second group of electrodes to which are connected signal leads are alternately arranged inside a vessel containing ionizable gas enclosed therein. The first group electrodes are provided with terminals to which are connected leads for introducing high voltage from the exterior, while the second group electrodes are provided with terminals to which are connected leads for leading out signal outputs to the exterior. These leads and terminals are all disposed at positions offset from traveling path of the radiation so as to reduce the volume of the space under the weak electric field behind the electrode section.