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公开(公告)号：US4295272A
公开(公告)日：1981-10-20
申请号：US143862
申请日：1980-04-25
申请人： Toshifumi Kubota
发明人： Toshifumi Kubota
CPC分类号： A01D34/905
摘要： In a mowing machine having an engine for driving a rotary blade via a centrifugal clutch, a shaft and a reduction gear assembly, the outer diameter of the shaft is selected such that the torsional natural vibration frequency of the rotational system extending from the engine to the rotary blade is less than one third of a rotational frequency above which the centrifugal clutch starts transmitting the engine output torque to the shaft. As a result, the torsional natural vibration frequency of the rotational system does not equal the rotational frequency or the half or one third of the rotational frequency of the engine so that undesirable resonance phenomenon will not occur.
摘要翻译： 在具有用于通过离心式离合器，轴和减速齿轮组件驱动旋转叶片的发动机的割草机中，选择轴的外径，使得从发动机延伸到旋转系统的旋转系统的扭转固有振动频率 旋转叶片小于旋转频率的三分之一，离心离合器开始将发动机输出扭矩传递到轴上方。 结果，旋转系统的扭转固有振动频率不等于发动机的转速或旋转频率的一半或三分之一，从而不会发生不期望的共振现象。
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公开(公告)号：US4143945A
公开(公告)日：1979-03-13
申请号：US819726
申请日：1977-07-28
申请人： Toshifumi Kubota
发明人： Toshifumi Kubota
摘要： A retro-focus wide angle photographic lens system comprises a front lens group including first and third negative meniscus lenses each having one surface greater in curvature than the other and oriented toward an image, and a second positive lens, and a rear lens group including a fourth positive lens, a fifth negative lens, and sixth and seventh positive lenses each having one surface greater in curvature than the other and oriented toward the image. The various lens system parameters are selected within the limits of and to satisfy a plurality of mathematical expressions, in order to optimize miniaturization while still retaining satisfactory optical characteristics.
摘要翻译： 复焦广角摄影镜头系统包括前透镜组，其包括第一和第三负弯月透镜，每个具有一个曲面比另一个更大的曲面并朝向图像，第二正透镜和后透镜组包括 第四正透镜，第五负透镜，以及第六和第七正透镜，每个正透镜的一个表面的曲率大于另一个并且朝向图像。 在满足多个数学表达式的限度内选择各种透镜系统参数，以便在保持令人满意的光学特性的同时优化小型化。
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公开(公告)号：US6089835A
公开(公告)日：2000-07-18
申请号：US215379
申请日：1998-12-18
摘要： A motor and a power transmitting mechanism are accommodated and supported in a two-piece housing unit separable into first and second housings. An air tank is defined by an outer surface of the second housing and an inside surface of a third housing provided on a recessed outer surface of the second housing.
摘要翻译： 马达和动力传递机构容纳并支撑在可分离成第一和第二壳体的两件式壳体单元中。 空气罐由第二壳体的外表面和设置在第二壳体的凹入的外表面上的第三壳体的内表面限定。
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4.发明申请公开(公告)号：US20060162411A1
公开(公告)日：2006-07-27
申请号：US10564348
申请日：2003-12-04
IPC分类号： B21H3/02
CPC分类号： B21H3/042 , Y10T408/853 , Y10T408/85918
摘要： The invention is aimed at the provision of an automatic releasing-type rolling head for forming a tapered thread on a pipe in which the shock generated at the end of the thread rolling operation is alleviated and a thread automatic rolling roller retracting mechanism is not damaged. The rolling head includes shaft bearing plates 33 which are slidably supported in a plurality of guide grooves 36 radially provided on inner surfaces of the front and rear closures of the housing 30 and which are provided on their outer surfaces in the radial directions with oblique surfaces 33b, thread rolling rollers 35 rotatably supported by the shaft bearing plates 33, a cam ring 31 which rotates in the housing 30 and has cam oblique surfaces 31a opposed to the oblique surfaces 33b of the shaft bearing plates 33, a lever 44 which abuts at its oblique surface against a cam member 45 to prevent movement thereof in association with the cam ring 31 and an abutment member 41 which is pressed and moved by a thread-rolled pipe. When the to-be-rolled pipe is thread-rolled to a predetermined length, the oblique surface of the lever 44 moving in association with the movement of the abutment member 41 is gradually moved away from the cam member 45. The cam ring 31 is rotated and the shaft bearing plates 33 and the thread rolling rollers 35 are moved in radial and outward directions and released from the to-be-rolled pipe.
摘要翻译： 本发明的目的在于提供一种用于在管道上形成锥形螺纹的自动释放型滚动头，其中减轻了在滚丝操作结束时产生的冲击，并且螺纹自动滚动辊缩回机构没有被损坏。 滚动头包括轴承板33，其可滑动地支撑在径向设置在壳体30的前部和后部闭合件的内表面上的多个引导槽36中，并且在径向方向上设置有倾斜表面33 b，由轴承板33可旋转地支撑的滚丝滚子35，在壳体30中旋转并具有与轴承板33的倾斜面33b相对的凸轮倾斜面31a的凸轮环31，杆44 在其倾斜表面抵靠凸轮构件45邻接，以防止与凸轮环31相关联的运动，以及通过螺纹滚动管压紧和移动的抵接构件41。 当将被轧制的管道螺纹轧制到预定长度时，与抵靠构件41的移动相关联地移动的杆44的倾斜表面逐渐地从凸轮构件45移开。 凸轮环31旋转，轴承板33和滚丝滚子35沿径向和向外方向移动并从被卷绕管释放。
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公开(公告)号：US5090606A
公开(公告)日：1992-02-25
申请号：US603659
申请日：1990-10-26
申请人： Takuji Torii , Hiromu Utsumi , Shinki Ohtsu , Yo Kawakami , Teruo Suzuki , Yoshimitsu Kawasaki , Toshifumi Kubota , Yoshinori Ishizawa , Tsunehisa Terayama
发明人： Takuji Torii , Hiromu Utsumi , Shinki Ohtsu , Yo Kawakami , Teruo Suzuki , Yoshimitsu Kawasaki , Toshifumi Kubota , Yoshinori Ishizawa , Tsunehisa Terayama
IPC分类号： B25C1/08
CPC分类号： B25C1/08
摘要： A combustion gas powered fastener driving tool includes inlet and outlet openings through which the combustion gases are discharged from a combustion chamber. These openings are located above the uppermost driving position (top dead center) of a slidable piston, so that an air and fuel mixture is fully trapped in the combustion chamber until after it is combusted. Since an outflow of the unburnt air and fuel mixture is completely prevented, the rate of fuel consumption of the fastener driving tool is high and there is no danger of accidental explosion of unburned fuel even when the fastener driving tool is used in a badly ventilated working place or site. An electric fan for forcing fresh air into the combustion chamber is disposed outside the cylinder and isolated from high temperatures. The fan is durable in structure and reliable in operation.
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公开(公告)号：US4832245A
公开(公告)日：1989-05-23
申请号：US143402
申请日：1988-01-13
CPC分类号： B25C1/00
摘要： An automatic nailing apparatus includes a housing having a piston driving system for driving a piston, a percussion rod having a concave at only the tip thereof, a nosepiece having a round channel being provided with a pair of nail head guide rails, and a nail magazine for supplying interconnected nails. The forefront nail of the interconnected nails can be nailed in a direction normal to a workpiece because a point of application on nailing exists on the center axis of the forefront nail.
摘要翻译： 一种自动打钉装置，包括具有用于驱动活塞的活塞驱动系统的壳体，仅在其顶端具有凹部的冲击杆，具有圆形通道的鼻梁设置有一对钉头导轨，以及指甲盒 用于提供互连的指甲。 互连钉子的最前面的钉子可以被钉在垂直于工件的方向上，因为钉子上的应用点存在于最前端钉子的中心轴上。
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公开(公告)号：US4134645A
公开(公告)日：1979-01-16
申请号：US827636
申请日：1977-08-25
CPC分类号： G02B13/02
摘要： A miniaturized telephoto camera lens assembly comprises a first positive lens, a second negative lens, and a third positive meniscus lens having a higher object side curvature. These lenses are disposed close together, and relatively remote from closely spaced fourth and fifth positive and negative meniscus lenses, respectively, each having higher object side curvatures. The optical parameters of the lens assembly are chosen to satisfy seven specified conditions relating to composite focal distances, spacing distances, Abbe numbers, and refractive index to optimize miniaturization while still achieving a high level of optical performance.
摘要翻译： 小型化的长焦相机透镜组件包括具有较高物体侧曲率的第一正透镜，第二负透镜和第三正弯月透镜。 这些透镜分别靠近在一起，并且分别相对远离紧密间隔的第四和第五正和负弯月透镜，每个具有较高的物体侧曲率。 选择透镜组件的光学参数以满足与复合焦距，间隔距离，阿贝数和折射率相关的七个指定条件，以优化小型化，同时仍然实现高水平的光学性能。
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公开(公告)号：US5199626A
公开(公告)日：1993-04-06
申请号：US888307
申请日：1992-05-27
申请人： Tsunehisa Terayama , Takuji Torii , Shinki Ohtsu , Hiromu Utsumi , Teruo Suzuki , Toshifumi Kubota , Yo Kawakami , Yasuyuki Hirano , Akira Uno
发明人： Tsunehisa Terayama , Takuji Torii , Shinki Ohtsu , Hiromu Utsumi , Teruo Suzuki , Toshifumi Kubota , Yo Kawakami , Yasuyuki Hirano , Akira Uno
IPC分类号： B25C1/08
CPC分类号： B25C1/08
摘要： A combustion gas powered tool includes a member defining a part of cylindrical combustion chamber having an axis. A piston is movable in a direction along the axis of the combustion chamber. The piston defines the combustion chamber in conjunction with the member. A mixture of air and fuel is generated in the combustion chamber. The air-fuel mixture in the combustion chamber is burned to drive the piston. An orifice grille extends in the combustion chamber, and is parallel to the axis of the combustion chamber.
摘要翻译： 燃烧气体动力工具包括限定具有轴线的圆柱形燃烧室的一部分的构件。 活塞可以沿着燃烧室的轴线的方向移动。 活塞与该构件一起限定燃烧室。 在燃烧室中产生空气和燃料的混合物。 燃烧室中的空气 - 燃料混合物被燃烧以驱动活塞。 孔格栅在燃烧室中延伸，并且平行于燃烧室的轴线。
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9.发明授权公开(公告)号：US07373796B2
公开(公告)日：2008-05-20
申请号：US10564348
申请日：2003-12-04
CPC分类号： B21H3/042 , Y10T408/853 , Y10T408/85918
摘要： The invention is aimed at the provision of an automatic releasing-type rolling head for forming a tapered thread on a pipe in which the shock generated at the end of the thread rolling operation is alleviated and a thread automatic rolling roller retracting mechanism is not damaged. The rolling head includes shaft bearing plates 33 which are slidably supported in a plurality of guide grooves 36 radially provided on inner surfaces of the front and rear closures of the housing 30 and which are provided on their outer surfaces in the radial directions with oblique surfaces 33b, thread rolling rollers 35 rotatably supported by the shaft bearing plates 33, a cam ring 31 which rotates in the housing 30 and has cam oblique surfaces 31a opposed to the oblique surfaces 33b of the shaft bearing plates 33, a lever 44 which abuts at its oblique surface against a cam member 45 to prevent movement thereof in association with the cam ring 31 and an abutment member 41 which is pressed and moved by a thread-rolled pipe. When the to-be-rolled pipe is thread-rolled to a predetermined length, the oblique surface of the lever 44 moving in association with the movement of the abutment member 41 is gradually moved away from the cam member 45. The cam ring 31 is rotated and the shaft bearing plates 33 and the thread rolling rollers 35 are moved in radial and outward directions and released from the to-be-rolled pipe.
摘要翻译： 本发明的目的在于提供一种用于在管道上形成锥形螺纹的自动释放型滚动头，其中减轻了在滚丝操作结束时产生的冲击，并且螺纹自动滚动辊缩回机构没有被损坏。 滚动头包括轴承板33，其可滑动地支撑在径向设置在壳体30的前部和后部闭合件的内表面上的多个引导槽36中，并且在径向方向上设置有倾斜表面33 b，由轴承板33可旋转地支撑的滚丝滚子35，在壳体30中旋转并具有与轴承板33的倾斜面33b相对的凸轮倾斜面31a的凸轮环31，杆44 在其倾斜表面抵靠凸轮构件45邻接，以防止与凸轮环31相关联的运动，以及通过螺纹滚动管压紧和移动的抵接构件41。 当将被轧制的管道螺纹轧制到预定长度时，与抵靠构件41的移动相关联地移动的杆44的倾斜表面逐渐地从凸轮构件45移开。 凸轮环31旋转，轴承板33和滚丝滚子35沿径向和向外方向移动并从被卷绕管释放。
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10.发明授权
公开(公告)号：US5438829A
公开(公告)日：1995-08-08
申请号：US59368
申请日：1993-05-12
CPC分类号： F15B21/048 , F15B1/027
摘要： An air compression system for supplying a compressed air into a pneumatically operated tool. The system includes an air compressor and air accumulator connected to the compressor and having a first accumulator and a second accumulators separate therefrom. A relief valve is connected between the first and second accumulators for allowing the compressed air to flow from the first accumulator to the second accumulator when a pressure of the compressed air accumulated in the first accumulator increases to a predetermined pressure. A check valve is provided between the first and second accumulators and in parallel to the relief valve for allowing the compressed air to flow from the second accumulator to the first accumulator. The accumulator is connected to the pneumatically operated too. If the tool requires small amount of compressed air for operation, the compressed air supply into the first accumulator is only necessary to reduce recharging period.
摘要翻译： 一种用于将压缩空气供应到气动工具中的空气压缩系统。 该系统包括连接到压缩机的空气压缩机和空气蓄能器，并具有与其分开的第一蓄能器和第二蓄能器。 安全阀连接在第一和第二蓄能器之间，用于当第一蓄能器中累积的压缩空气的压力增加到预定压力时，允许压缩空气从第一蓄能器流到第二蓄能器。 止回阀设置在第一和第二蓄能器之间并且与安全阀并联，以允许压缩空气从第二蓄能器流到第一蓄能器。 蓄能器也连接到气动操作。 如果该工具需要少量的压缩空气进行操作，则仅需要减少再充电期间的第一蓄电池中的压缩空气。
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