摘要:
In single crystal growth by means of a CZ method, a granular/lump polycrystalline raw material is additionally supplied into a raw material melt in a crucible through a vertical charging tube. A raw material accumulating section is provided at a site part way downward in the vertical charging tube working in such a way that a predetermined amount of the polycrystalline raw material is accumulated in the raw material accumulating section and the polycrystalline raw material in excess of the predetermined amount falls down. The polycrystalline raw material falling down in the vertical charging tube strikes against the accumulated raw material in the raw material accumulating section, thereby absorbing a shock of the falling raw material. The accumulated raw material works simultaneously as a protective member, thereby preventing breakage of the tube accompanying absorption of the shock from occurring. It is therefore possible to prevent melt splashing that is problematical when a lump raw material for recharge is charged using a vertical charging tube.
摘要:
An air conditioning system for a vehicle includes a compressor. The vehicle includes a first drive source and the compressor includes a second drive source. The compressor is driven by the first drive source or the second drive source, or a combination thereof, and the second drive source includes an electrical power supply. The air conditioning system also includes a controller for selecting between the first drive source and the second drive source, such that when the compressor is active, the first drive source drives the compressor except when the vehicle is operating in a predetermined mode, a voltage of the electrical power supply is greater than or equal to a minimum electrical power supply voltage, and an amount of electric power consumed by the second drive source is less than a maximum electric power. For example, the predetermined mode may be an idle-stop mode.
摘要:
An impact drill includes a first ratchet together with a spindle and movable in an axial direction, and a second ratchet engageable with the first ratchet. The second ratchet can be moved in the axial direction, and rotated with a predetermined range in a rotational direction.
摘要:
In single crystal growth by means of a CZ method, a granular/lump polycrystalline raw material is additionally supplied into a raw material melt in a crucible through a vertical charging tube. A raw material accumulating section is provided at a site part way downward in the vertical charging tube working in such a way that a predetermined amount of the polycrystalline raw material is accumulated in the raw material accumulating section and the polycrystalline raw material in excess of the predetermined amount falls down. The polycrystalline raw material falling down in the vertical charging tube strikes against the accumulated raw material in the raw material accumulating section, thereby absorbing a shock of the falling raw material. The accumulated raw material works simultaneously as a protective member, thereby preventing breakage of the tube accompanying absorption of the shock from occurring. It is therefore possible to prevent melt splashing that is problematical when a lump raw material for recharge is charged using a vertical charging tube.
摘要:
A method capable of securely pulling up a heavy single crystal is described. Using an apparatus comprising a crucible for storing a molten material for a single crystal; a heater for heating the molten material; means for pulling up the single crystal to grow by bringing a seed crystal in contact with the surface of the molten material in the crucible; and a flow-regulating member surrounding the single crystal at the growth area for shielding the heat of radiation and for regulating inert gas flow, the method comprises the following steps of setting the distance between the lower end of the flow-regulating member and the surface of the molten material to be a first distance D1 when the seed crystal comes into contact with the surface of the molten material in said crucible; forming the single crystal at the neck portion; thereafter setting the distance between the lower end of the flow-regulating member and the surface of the molten material to be a second distance D2 where D1 (mm)>D2 (mm); and forming the single crystal at the shoulder portion and subsequently forming the single crystal at the body portion. A dislocation-free single crystal having a heavy weight can be produced with a high crystal quality, and the method is applicable to various operation modes at which the apparatus is operated under various conditions of crystal growth.
摘要:
A multi-mode communication device includes a receiving unit which receives a radio signal via a radio communication path, and processes the received radio signal, a frequency-component obtaining unit which obtains frequency components in all or part of a frequency range of the received radio signal, and a controlling unit which selects a multiplex-attachment scheme appropriate for the received radio signal from a plurality of applicable multiplex-attachment schemes by controlling said receiving unit, said controlling unit selecting a CDMA scheme as the multiplex-attachment scheme when the frequency components obtained by said frequency-component obtaining unit are substantially uniformly distributed.
摘要:
The present invention provides a screening mechanism for an optical fiber fusion-splicer including two holder tables for holding two optical fibers to be fusion-spliced in an opposed relationship, a connection table disposed between the holder tables and having guide grooves into which tip end portions, from which coatings are removed, of the two optical fibers held by the holder tables are fitted, and fiber clamps adapted to press the tip end portions of the optical fibers into the guide grooves, the screening mechanism comprising a sensor capable of detecting the fact that the pressing of the tip end portions of the optical fibers effected by the fiber clamps is released, and wherein, when the releasing is detected by the sensor, one or both of the holder tables are automatically shifted in directions opposite to optical fiber abutting directions to pull the optical fibers, thereby effect screening.
摘要:
A printed circuit board mounting structure is disclosed wherein first and second printed circuit boards are mounted by mounting projections formed on a case. Since the mounting projections can be used in common for both first and second printed circuit boards, the printed circuit board mounting structure of the invention is simple in the mounting work, high in productivity and low in cost as compared with a conventional like structure wherein first and second printed circuit boards are mounted to different mounting projections.
摘要:
A paper feeding device has a first guide portion through which paper having a preselected width and thickness is introduced, a second guide portion for receiving the paper introduced into the first guide portion, and at least one connecting guide portion disposed between the first and second guide portions. A paper feeding roller mechanism feeds the paper from the first guide portion to the second guide portion through the connecting guide portion of the paper feeding guide. The paper feeding roller mechanism has a clamping portion for clamping the paper when the paper is fed to the second guide portion. The clamping portion of the paper feeding roller mechanism is disposed generally parallel to the connecting guide portion of the paper feeding guide.