摘要:
A tire using, for a tread, a rubber composition comprising (A) a rubber component comprising 15 to 70% by mass of a styrene-butadiene copolymer modified with an amine-based functional group and (B) silica having a specific surface area by cetyltrimethylammonium bromide (CTAB) adsorption of 60 to 130 m2/g and a specific surface area by nitrogen adsorption (N2SA) in accordance with the BET method of 70 to 140 m2/g in an amount of 20 to 150 parts by mass based on 100 parts by mass of the rubber component. The tire exhibits excellent abrasion resistance in combination with decreased rolling resistance (small heat buildup) and excellent steering stability which is typically expressed by excellent wet skid resistance.
摘要:
A fixing unit has a crown-shaped resilient member comprising an annular cylindrical member and a flange extending integrally from an upper end of the annular cylindrical member. The annular cylindrical member has a first tooth, and the flange has a second curved portion. The first tooth engages in an annular groove defined in the outer circumferential surface of an upper end of the housing, and the second curved portion presses a step on the outer circumferential surface of a lower portion of a sensor case, for fixing the sensor case and the housing to each other. A first support has a first flange supported on a step on an inner wall surface of the housing, and a second support has a first flange supported on another step on the inner wall surface of the housing. A coil is sandwiched and held between the first and second supports. The sensor case is directly held against the first support. The lower surface of the sensor case and the upper end of the housing are spaced a given distance from each other. A crown-shaped resilient member is installed on joined portions of the sensor case and the housing to hold the sensor case, the housing, the first and second supports, and the coil securely together.
摘要:
A failure-free power source device memorizes the history of errors of a commercially available power source, monitors the stability of the power source on the basis of the history, directly outputs, when the power source remains stable for more than a predetermined period of time, an AC input as an AC output, and releases, when an error occurs in the power source, energy stored in an accumulator until a predetermined period of time expires to thereby output it as an AC output via an inverter.
摘要:
A coupling means comprises a first retainer and a second retainer. The first and second retainers are fastened to a first annular groove and a second annular groove of a valve stem respectively, and they are fixed by an energizing action in the vertical direction effected by a second elastic member. The first retainer is energized upwardly by a first elastic member provided on a lower side of the first retainer, and it abuts against the lower surface of a projection of a plunger. In this arrangement, the plunger is displaced downwardly while pressing the first retainer. Thus, the valve stem is moved downwardly together with the first retainer.
摘要:
The present invention provides a bowed string instrument that allows a player to hold it in a stable manner and to handle a bow and strings without much effect. A bowed string instrument 1 has a body 102, a shoulder pad 103 connected to the body 102, a body receiver 106 disposed below the body 102 so as to receive a load of the body, and an operative joint portion 107 coupling the body 102 and the body receiver 106 to each other while allowing the body 102 to be slidable on a spherical surface. The body 102 includes a fingerboard 105, a plurality of strings 104 extending above the fingerboard 105, and a pair of bridges for supporting and tensioning the plurality of strings 104 above the fingerboard 105.
摘要:
A three-dimensional measuring apparatus includes a projecting unit that includes an illumination capable of varying illuminance and that projects a stripe to a measurement object with light from the illumination and shifts a phase of the stripe projected to the measurement object; an imaging unit which captures an image of the measurement object; and a control unit which allows the imaging unit to capture a plurality of the images by allowing the projecting unit to shift the phase of the stripe projected to the measurement object a plurality of times, extracts luminance values from the plurality of captured images, calculates an error rate in three-dimensional measurement of the measurement object based on the extracted luminance values, calculates the error rate for each illuminance by varying the illuminance of the illumination, and determines measurement illuminance for three-dimensionally measuring the measurement object based on the calculated error rate of each illuminance.
摘要:
Provided is a tire using a rubber composition, in which: the rubber composition contains a rubber component and a filler; the rubber component contains (A) a modified conjugated diene polymer and (B) a modified conjugated diene-aromatic vinyl copolymer; a modifying agent used for each of the component (A) and the component (B) includes (C) a hydrocarbyloxysilane compound containing a nitrogen atom and a silicon atom or (D) a hydrocarbyloxysilane compound containing a silicon atom; a combination of an unmodified conjugated diene polymer and the modifying agent, and a combination of an unmodified conjugated diene-aromatic vinyl copolymer and the modifying agent include any one of the following items 1 to 3: 1: the conjugated diene polymer and the component (C), and the conjugated diene-aromatic vinyl copolymer and the component (D); 2: the conjugated diene polymer and the component (D), and the conjugated diene-aromatic vinyl copolymer and the component (C); and 3: the conjugated diene polymer and the component (C), and the conjugated diene-aromatic vinyl copolymer and the component (C); and the filler contains silica and carbon black at a mass ratio of 10:90 to 80:20, the tire having good low fuel consumption, good on-ice performance, good wet performance, and good dry performance.
摘要:
Provided are: a rubber composition for a tire base rubber, including: (A) a rubber component including an amine-based functional group modified polybutadiene rubber; and (B) silica having a cetyltrimethylammonium bromide (CTAB) adsorption specific surface area of 50 to 120 (m2/g) and having a nitrogen adsorption specific surface area (N2SA), which is determined by a BET method, of 70 to 140 m2/g, in which the silica is blended in an amount of 20 to 120 parts by mass with respect to 100 parts by mass of the rubber component, the rubber composition being capable of providing a pneumatic tire which is excellent in fracture property and can have greatly reduced rolling resistance; and a pneumatic tire having the above-mentioned characteristics made using the rubber composition as a base rubber.