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    • 9. 发明授权
    • Pneumatic tire with air permeation preventive layer
    • 带防透气层的气动轮胎
    • US5851323A
    • 1998-12-22
    • US750022
    • 1997-02-19
    • Hiroyuki KaidoKazuto YamakawaJiro WatanabeZenichiro ShidaYoshiaki Hashimura
    • Hiroyuki KaidoKazuto YamakawaJiro WatanabeZenichiro ShidaYoshiaki Hashimura
    • B60C1/00B60C5/14
    • B60C1/0008B60C5/14B60C5/142Y10T152/10855
    • A pneumatic tire has an air permeation preventive layer comprising a film composed of a polymer composition containing a thermoplastic resin or a blend of a thermoplastic resin and an elastomer having an air permeation coefficient of not more than 25.times.10.sup.-12 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg and a Young's modulus of 1 to 1000 MPa which is arranged so as to substantially cover the inner surface of the tire at least in the range of 20 mm from the position of the two ends of the belt to the direction of the crown center and is also arranged so as to substantially cover the inner surface of the tire at the crown center side of a position a maximum of 20 mm from the position of the two ends of the belt to the direction of the bead portion and applies an air permeation preventive layer comprised of rubber so as to substantially cover the rest of the inner surface of the tire and using an air permeation preventive layer having an actual elongation at break of at least 15% in the circumferential direction and radial direction at the tire side portions in a range of at least 0.5H to 0.65H of the tire sectional height H.
    • PCT No.PCT / JP96 / 00737 Sec。 371日期1997年2月19日 102(e)日期1997年2月19日PCT 1996年3月21日PCT公布。 WO96 / 30221 PCT出版物 日期:1996年3月10日充气轮胎具有防透气层,其包含由含有热塑性树脂的聚合物组合物或热塑性树脂与弹性体的共混物构成的膜,该透气系数为25×10 12 cc×cm 3 / cm 2×sec×cmHg的杨氏模量和1〜1000MPa的杨氏模量,其布置成基本上覆盖轮胎的内表面至少在从带的两端的位置到冠中心的方向的20mm的范围内,以及 还布置成基本上覆盖轮胎的内表面,该轮胎在冠部中心侧距离带的两端的位置至胎圈部分的方向最大为20mm的位置,并且施加防透气性 由橡胶组成,以便基本上覆盖轮胎的内表面的其余部分,并且使用具有至少15%的实际断裂伸长率的防空气层 在轮胎侧部的轮胎截面高度H的至少0.5H〜0.65H的范围内的方向和径向。
    • 10. 发明授权
    • Centrifugal fan
    • 离心风机
    • US08961121B2
    • 2015-02-24
    • US13166148
    • 2011-06-22
    • Kevin YenJiro WatanabeHiromitsu KuribayashiShigekazu Mitomo
    • Kevin YenJiro WatanabeHiromitsu KuribayashiShigekazu Mitomo
    • F04D29/44F04D25/06F04D29/42F04D29/66
    • A61B17/80A61B17/56A61B17/58A61F2/30F04D25/0613F04D29/422F04D29/667
    • A casing of a centrifugal fan includes a suction port forming wall portion, an opposed wall portion opposed to the suction port forming wall portion, and a sidewall portion connecting the suction port forming wall portion and the opposed wall portion. A tongue portion is provided at the sidewall portion. The tongue portion projects into an air passage in the vicinity of a discharge port to form a narrowed air passage portion within the air passage. A leading end surface of the tongue portion is shaped such that the width of the leading end surface increases from the suction port forming wall portion, where the suction port is formed, to the opposed wall portion. The tongue portion is shaped such that the projecting length of the tongue portion into the air passage continuously decreases from the suction port forming wall portion to the opposed wall portion.
    • 离心风扇的壳体包括吸入口形成壁部,与吸入口形成壁部相对的相对壁部,以及连接吸入口形成壁部和相对壁部的侧壁部。 舌部设置在侧壁部分。 舌部突出到排出口附近的空气通道中,以在空气通道内形成狭窄的空气通道部分。 舌部的前端面被成形为使得前端面的宽度从形成有吸入口的吸入口形成壁部分增加到相对的壁部。 舌部被成形为使得舌部伸入空气通道的突出长度从吸入口形成壁部分到相对的壁部分连续地减小。