摘要:
The present invention relates to an under trimming device mounted below a needle late of a multi-needle sewing machine which mainly comprises an under trimming subassembly and a thread-sucking subassembly. The under trimming subassembly comprises a linkage and a thread-releasing means both being capable of shifting the under trimming subassembly into a standby position, extended position, thread-catching position, retracted and cut position, thread-clamping position, and a thread-releasing position in a series of linear movements. The thread-sucking subassembly is provided at one lateral side of the under trimming subassembly such that the looper thread cut and released by the under trimming subassembly can be instantly sucked and clamped in place and then used in the next sewing operation.
摘要:
A semiconductor laser device having a relative wide active region and a distributed Bragg reflector facet wherein a relative high reflectance region one third of the active region width is centrally disposed on a surface of the laser through which light is emitted.
摘要:
A semiconductor laser device for a laser printer in which a reflection film having reflectance in a range of 45 to 65% is provided on a laser output facet for outputting a laser output beam.
摘要:
A waistband sew-in device to carry out. The sewing of waistbands in the waist part of briefs, skirts and trousers by retaining a cloth in a hoop shape with a stationary frame equipped with an inverted two-legged U-shaped guide surface, inserting a stretched waistband outside the cloth, folding over a cloth edge of the cloth in two plies to the outside of the waistband, further folding the cloth edge of the already folded part in two plies to be pushed into the space between the waistband and the cloth, sliding a belt strip reeled on the guide surface of the stationary frame on the guide surface by a take-up and rewinding mechanism installed on each leg of the two legs of the stationary frame, and sending the cloth having the waistband reeled in its three-folded cloth edge into a sewing unit of a sewing machine together with said waistband.
摘要:
A heat-sensitive recording material comprising a support having provided thereon a heat-sensitive color forming layer containing a colorless or slightly colored electron donating dye precursor and an electron accepting compound capable of forming color by the reaction with the electron donating dye precursor, wherein the heat-sensitive color forming layer contain modified polyvinyl alcohol having a hydrophobic group including a hydrocarbon residual group having 4 or more carbon atoms in the molecule.
摘要:
A semiconductor laser device which includes a first conductivity type semiconductor substrate; a first conductivity type first cladding layer, an active layer, and a second conductivity type second cladding layer successively provided on the substrate, wherein both the cladding layers have energy band gaps larger than that of the active layer; a first conductivity type current blocking layer having an energy band gap larger than that of the second cladding layer being provided on the second cladding layer, having a groove removed therefrom so as to form an exposed stripe portion on the second cladding layer; and a second conductivity type third cladding layer having an energy band gap smaller than that of the current blocking layer and larger than that of the active layer formed on the current blocking layer and on the stripe portion.
摘要:
A heat-sensitive recording sheet comprises a colorless or pale-colored electron donating colorless dye precursor, an electron accepting compound which forms color when reacted upon heating with the colorless dye precursor and a heat-fusible substance. The electron accepting compound is 1,4-bis(p-hydroxycumyl) benzene and the heat-fusible substance is 1-p-ethylphenoxy-2-phenoxyethane.
摘要:
A position detector is provided that can detect the position of a moving member with a higher degree of accuracy. In one form, a rotation sensor includes a magnet in which N-pole magnets and S-pole magnets are arranged alternately and circularly and that rotates in conjunction with the rotation of a spool, and first and second Hall elements and that are disposed apart from each other in the circumferential direction of the magnet and detect the poles of the N-pole magnets and S-pole magnets. In that case, the first and second Hall elements and are both unipolar detection type Hall elements that detect only the S-pole. The magnetization width of the S-pole magnets is set large, and the magnetization width of the N-pole magnets is set small.
摘要:
A valve timing adjusting system includes a displacement mechanism unit that displaces a camshaft rotational phase relative to a crankshaft, a locking mechanism unit that locks the rotational phase, and a control unit that controls operations of a hydraulic control valve. The control unit includes a property obtainment unit that obtains property information regarding hydraulic properties, and a lock release process completes locking release by supplying oil pressure to the locking mechanism unit for moving the rotational phase from an intermediate locked phase toward one of a retard/advance position, and then supplying oil pressure to the locking mechanism unit for moving the rotational phase toward the other of the retard/advance position; the rotational phase stands by at a predetermined position of the one of the retard/advance position past the intermediate locked phase during the lock release process, until a standby time has elapsed.
摘要:
A valve opening-closing timing control device includes a solenoid valve having a solenoid mechanism provided with a spool having an oil path groove formed in an outer face thereof, and a sleeve for housing the spool to reciprocate and slide. A wall surface of the sleeve has a first port communicating with a first hydraulic oil supply section, a second port communicating with a second hydraulic oil supply section, and a third port communicating with the side of a hydraulic oil supply source. The spool is driven and set to a first position for supplying hydraulic oil from the hydraulic oil supply source to the first port, a second position for supplying the hydraulic oil from the hydraulic oil supply source to the second port, and a third position outside an area between the first and second positions to prevent supply of hydraulic oil from the first and second ports.