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    • 3. 发明授权
    • Toothed sintered pulley
    • 齿形烧结带轮
    • US4952199A
    • 1990-08-28
    • US386077
    • 1989-07-28
    • Tsutomu SakaKatsuaki Sato
    • Tsutomu SakaKatsuaki Sato
    • F16H55/17
    • F16H55/171
    • In a toothed sintered pulley comprising a rim having a large number of teeth on its outer peripheral surface and lightening grooves at those portions of its inner peripheral surface which correspond to the individual teeth, a boss located radially inside of the rim, and a connection which connects the inner peripheral surface of the rim with an outer peripheral surface of the boss, the porosity of the rim is set larger than that of the boss. In addition, the connection is connected to axially intermediate portions of the inner peripheral surface of the rim, and lands are provided in a one-side half of the rim projecting from this connection in one of axial directions, so that each land is located between the two adjacent lightening grooves, with the radial thickness of the land being gradually increased from an outer end face of the one-side half toward the connection. This makes it possible to provide a toothed sintered pulley which is lightweight; in which any backlash noise due to meshing of the rim with a belt can be reduced, and the strength of the boss cannot be injured, and in which the rigidity of the one-side half in the rim is improved while suppressing the increase in weight thereof to the utmost.
    • 在一种齿形烧结带轮中,包括在其外周表面上具有大量齿的边缘和对应于各个齿的内周表面的那些部分处的减光槽,位于轮辋径向内侧的凸台和连接件 将边缘的内周面与凸台的外周面连接,将轮辋的孔隙设定得大于凸台的孔隙率。 另外,连接件连接到轮辋的内周表面的轴向中间部分,并且在轴向方向上从该连接突出的边缘的一侧的一侧设置有平台,使得每个平台位于 两个相邻的发光槽,其中脊的径向厚度从一侧半部的外端面朝着连接逐渐增大。 这使得可以提供重量轻的齿形烧结带轮; 其中可以减少由于轮辋与带的啮合而产生的任何间隙噪声,并且凸台的强度不会受到损伤,并且其中边缘中的一侧半部的刚度在改善同时抑制重量增加 最大限度地。
    • 7. 发明授权
    • Heat resisting alloys
    • 耐热合金
    • US5567383A
    • 1996-10-22
    • US471153
    • 1995-06-06
    • Toshiharu NodaKatsuaki SatoTsutomu Saka
    • Toshiharu NodaKatsuaki SatoTsutomu Saka
    • F01L3/02C22C30/00C22C38/00C22C38/50C22C38/58
    • C22C30/00
    • A heat resisting alloy for use in exhaust valves and the like low in price and excellent in structural stability, high-temperature strength and hot workability, which consists essentially by weight percentage of C: 0.01.about.0.10%, Si.ltoreq.2.0%, Mn.ltoreq.2.0%, Cr: 14.about.20%, Nb+Ta: 0.3.about.1.5%, Ti: 1.5.about.3.5%, Al: 0.5.about.1.5%, Ni+Co: 35.about.45%, B: 0.001.about.0.01%, one or both of Ca: 0.001.about.0.03% and Mg: 0,001.about.0.03%, and the balance of Fe, additionally the total atomic percentage of Al, Ti, Nb, and Ta: 4.5.about.6.0%, an atomic percentage ratio of Ti/Al: 1.0.about.2.0, and M-value obtained through the following equation.ltoreq.0.925;M=0.717 Ni (atomic fraction)+0.858 Fe (atomic fraction)+1.142 Cr (atomic fraction)+1.90 Al (atomic fraction)+2.271 Ti (atomic fraction)+2.117 Nb (atomic fraction)+1.001 Mn (atomic fraction)+1.90 Si (atomic fraction)+0.777 Co (atomic fraction)+2.224 Ta (atomic fraction).
    • 用于价格低廉,结构稳定性,高温强度和热加工性优异的排气门等的耐热合金,其基本上由C:0.01%0.10%,Si <2.0%的重量百分比组成, Mn≤2.0%,Cr:14差异20%,Nb + Ta:0.3差异1.5%,Ti:1.5差异3.5%,Al:0.5差异1.5%,Ni + Co:35差异45%,B:0.001差 0.01%,Ca:0.001差异0.03%,Mg:0.001差别中的一种或两种,余量为Fe,另外为Al,Ti,Nb和Ta的总原子百分比:4.5分差6.0%,原子百分比 Ti / Al:1.0 DIFFERENCE 2.0的比值和通过以下等式获得的M值
    • 9. 发明授权
    • Non-circular cross-section coil spring
    • 非圆形横截面螺旋弹簧
    • US4923183A
    • 1990-05-08
    • US258746
    • 1988-10-17
    • Tsutomu Saka
    • Tsutomu Saka
    • F16F1/04
    • F16F1/042
    • A non-circular cross-section coil spring, wherein a spring wire having a non-circular cross-section shape is coiled into such configuration that a major diameter of the cross-section is directed in the direction intersecting with a center line of the spring. Torsion is preliminarily given to at least a part of the spring wire so that the coil spring inner circumferential surface side of the above-mentioned major diameter may be deviated to a free end side of the spring with reference to the reference plane of extension and contraction of the coil spring in the case where the coil spring is a compression coil spring, but to the side of the aforementioned reference plane of extension and contraction in the case where the coil spring is a tension coil spring. In a coil spring comprising a larger pitch portion and a smaller pitch portion, a large angle of torsion is preliminarily given to the larger pitch portion and a small angle of torsion is preliminarily given to the smaller pitch portion. Upon application of a load, an angle of torsion of the spring wire becomes zero or nearly zero, thereby increase of the maximum shearing stress generated at the inner circumference of the coil spring can be suppressed, and also sharing stress in the spring wire can be made uniform.