Abstract: Disclosed is a litz wire coil that is configured by spirally winding a litz wire on one plane by a predetermined number of turns. The litz wire is configured by twisting together a plurality of enameled wires formed by baking an insulating film on a conducting body. Pressure shaping is performed such that the litz wire has a substantially rectangular shape in cross section, and the flatness ratio of the litz wire in cross section (long side/short side) is controlled at 1.10 to 1.60, preferably 1.20 to 1.40, more preferably 1.25 to 1.35.

Abstract: A terminal connecting method including: removing a insulation film by a predetermined length from one end of a litz wire; inserting to a pressure fixing part a terminal part of the litz wire; compressing a first portion of the pressure fixing part with a first compression force to cause plastic deformation of an entirety of the pressure fixing part, and to temporarily fix the terminal part of the litz wire to the pressure fixing part; compressing a second portion of the pressure fixing part with a second compression force greater than the first compression force to locally cause plastic deformation of the pressure fixing part and the litz wire, the second portion being a part of the first portion; and pouring molten solder from a front end side of the pressure fixing part to firmly fix the litz wire to the terminal metal fitting.

Abstract: A glass tube cleaning and cutting device includes a glass tube cutting device configured to cut an end portion of a glass tube while the glass tube cutting device rotates the glass tube having a predetermined length about a tube axis of the glass tube and conveys the glass tube in a direction orthogonal to the tube axis, at least one blower configured to blow air into an opening located on a first end portion side of the glass tube, and at least one cutting blade provided at a position opposite to the at least one blower interposing the glass tube therebetween, the at least one cutting blade being configured to impose thermal shock and scratches on an outer circumference surface of a second end portion side of the glass tube to cut the second end portion side of the glass tube.

Abstract: A glass tube cleaning and cutting device and a method for same configured to cut a continuous glass tube at a predetermined length by intermittently contacting a cutting blade with the outer circumference surface of the continuously travelling continuous glass tube formed by tube pulling while blowing air to impose scratches and thermal shock on the outer circumference surface of the continuous glass tube so as to obtain a plurality of cut-off glass tubes, the glass tube cleaning and cutting device includes: a blower provided on a more downstream side of the travelling continuous glass tube than the cutting blade, the blower being configured to blow opposing air opposed to air into a tip end opening of the continuous glass tube.

Abstract: The invention relates to a sheet feeding type wafer polishing machine which processes both surfaces of the wafer and outermost periphery of the wafer (edge part) in series, having two platens which are adhered to a polishing pad or a grinding stone and holding a wafer therebetween. The surface of the wafer is processed by rotating at least one of the two platens and wafer, wherein the diameters of the platens are bigger than the radius of the wafer and smaller than the diameter of the wafer, and the wafer is supported by at least three guide rollers which contact to the outermost periphery of the wafer. The present invention also provides an edge polishing and a surface polishing method which are carried out by the wafer processing machine.

Abstract: Numerous spin-dry mechanisms 45A, 45B, and 45C for drying workpieces W at individual drying positions by rotating them at high speed are disposed in a drying section 3 of a washing apparatus, and sequentially move forward and backward between the respective drying position and the workpiece delivery position 3A at which workpieces are delivered to a transfer mechanism 6.

Abstract: An apparatus for detecting the presence of a person or persons inside a room having a door. The apparatus comprises a pyroelectric infrared sensor and a piezoelectric air pressure sensor. The infrared sensor detects movement of a person and produces a signal indicating the movement. The air pressure sensor detects opening and closing of the door and produces a signal indicating the opening and closing. A logic device including monostable multivibrators, AND gates, and an OR gate is connected between the outputs of the two sensors. When the signal indicating the movement is applied to the logic device later than the signal indicating the opening and closing, the logic device produces a signal indicating the entry of a person. When the signal indicating the opening and closing is applied to the logic device later than the signal indicating the movement, the logic device produces a signal indicating the exit of a person. These signals are processed by the logic device to know the presence or absence of a person.