摘要:
The valve-overlapping period of a spark ignition type, four stroke internal combustion engine extends within the range of 60.degree. to 90.degree. of crank angle with the valve overlapping period being generally equally divided to each side of the piston top dead center so that the pressure differential between the exhaust gas passage of the engine and the fuel and air intake passage causes the exhaust gas to counterflow from the exhaust gas passage to the combustion chamber and into the intake passage of the engine with the suction effect of piston descent being negligible when the piston is in the vicinity of top dead center. Secondary air supplied to the exhaust gas passage of the engine when the pressure in the exhaust gas passage is lower than atmospheric pressure during the valve-overlapping period causes the secondary air and exhaust gas mixture to mix with the fresh air and fuel mixture in the intake passage to preheat the fresh air and fuel mixture and subsequent recombustion within the combustion chamber of the engine together with the fresh mixture of fuel and primary air.
摘要:
Provided is a display device characterized in that a display area can be prevented from appearing darker when the position of light-shielding sections are moved, while the control of voltages applied to electrodes is simplified. In the case where electrodes to which a specific voltage is applied are changed from a first electrode group (e.g., 52a) to a second electrode group (e.g., 52b, 58a, 58b), the voltage applied to the first electrode group is switched from the specific voltage to a reference voltage first, and thereafter, the voltage applied to the second electrode group is switched from the reference voltage to the specific voltage.
摘要:
The present invention provides a resin composition which is excellent in balance of mechanical properties and processability, solvent resistance and chemical resistance. This composition comprises:(a) a polyphenylene ether resin,(b) a thermoplastic polyester resin, and(c) a compound represented by the formula:(HO)mR.sup.1 (COOR.sup.2)n wherein R.sup.1 represents a straight or branched chain saturated aliphatic hydrocarbon group of 2-20 carbon atoms, R.sup.2 represents a hydrogen atom or an alkyl or aryl group of 1-20 carbon atoms and R.sup.1 and R.sup.2 may be identical or different and m and n each represents an integer of 1 or more or a derivative thereof.This composition may further contain a rubber-like polymer.
摘要:
The present invention provides a resin composition which shows excellent balance in mechanical strengths and has superior solvent resistance and processability. This composition comprises:(a) a polyolefin resin in an amount of 20-95% by weight,(b) a polyphenylene ether resin in an amount of 80-5% by weight,(c) a partially hydrogenated alkenyl aromatic compound-isoprene block copolymer in an amount of 2-45 parts by weight based on totally 100 parts by weight of the components (a) and (b), and(d) an alkenyl aromatic compound-conjugated diene block copolymer in an amount of 3-45 parts by weight based on totally 100 parts by weight of the components (a) and (b).This composition can be easily molded into articles very excellent in balance of impact strength, heat resistance and solvent resistance and having uniform and smooth surface.
摘要:
In a weaving loom of the type having program controlled weft selector means, a weft-yarn drawing-off and length-measuring apparatus comprising a detachable length-measuring roller. A pressing roller is in rolling contact with the length-measuring roller and movable relative to the length-measuring roller such as when the length-measuring roller is to be replaced with another roller having a different diameter. A roller guide mechanism including a parallelogrammic four-bar linkage contains the pressing roller to move in an arc. A weft guide mechanism is provided and is operative to move a weft yarn into and out of a position passable between the rollers. A control mechanism operated by the weft selector means drives the weft guide mechanism into and out of a condition providing the aforesaid position of the weft yarn.
摘要:
An apparatus for selectively inserting into the shed of a weaving loom a plurality of weft yarns having different natures, particularly colors, comprising cam means including at least one cam which is formed with lobe and bottom portions alternately arranged about the axis of rotation of the cam and which is driven to turn about the axis through a predetermined angle under the control of weft selector signal supply means such as a pattern card arrangement, wherein cam retaining means is provided to hold the cam in one of the angular positions operative to have each of the weft shooting members held in a position ready to insert the pick of weft yarn into the shed, the retaining means being disengaged from the cam when the cam is being rotated from one of the angular positions thereof into another.
摘要:
An object of the present invention is to provide a novel stereoscopic display device that allows the viewer to properly view a stereoscopic image. The device includes: a display configured to display an image for stereoscopic viewing; an imaging unit configured to image a face of a viewer; a position information acquisition unit configured to acquire position information regarding the face imaged by the imaging unit; an operation unit configured to be operated by the viewer when the viewer is in an optimal position from where the image for stereoscopic viewing displayed on the display can be properly viewed as a stereoscopic image; an optimal position information storage unit configured to store position information provided when the operation unit is operated as position information on the optimal position; and a positional relationship notification unit configured to notify the viewer of the positional relationship between the current position of the viewer and the optimal position.
摘要:
Major surface of a substrate having an optical waveguide and a modulation electrode is pasted to a base substrate through a thermosetting resin, and then the rear surface of the substrate is machined thus making thin the entirety. Subsequently, the rear surface of the substrate thus rendered thin is subjected to machining or laser machining to form a thin part, which is further subjected to machining or laser machining to form a first thin part at a part, including the optical waveguide, of the thin part and a second thin part thinner than the first thin part contiguously thereto. Thereafter, the rear surface of the substrate is pasted to the major surface of a supporting substrate through a thermosetting resin and the base substrate is stripped thus obtaining an optical modulator.
摘要:
A compound of the formula:A--CH.sub.2 CH.sub.2 --O--B[wherein A stands for an aromatic ring residue, a group shown by R.sup.1 --CO-- (wherein R.sup.1 stands for an aliphatic hydrocarbon residue, aromatic hydrocarbon residue, a heterocyclic residue, an aromatic alipahtic hydrocarbon residue or an alicyclic hydrocarbon residue) or R.sup.2 --CH.dbd.CH-- (wherein R.sup.2 stands for an aliphatic hydrocarbon residue an aromatic hydrocarbon residue a heterocyclic residue an aromatic aliphatic hydrocarbon residue or an alicyclic hydrocarbon residue), and B stands for an aromatic ring residue], can be obtained in high yield, at high purity level by short reaction time, by reacting a compound of the formula:A--CH.sub.2 CH.sub.2 --X(wherein A is of the same meaning as defined above, and X stands for a leaving group) with a compound represented by the general formula:MO--B(wherein M stands for an alkali metal atom or an alkaline earth metal atom and B is of the same meaning as defined above) in a non-aqueous solvent.
摘要:
A thermoplastic resin composition which exhibits improved compatibility between polyphenylene ether and thermoplastic polyester constituents, excellent processability and impact strength contains 95-5% by wt. a polyphenylene ether and 5-95% by wt. of a thermoplastic polyester; 0.1-30 parts by wt. of an impact strength modifier; and 0.01-10 parts by weight of an amino resin.