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    Exhaust means for pneumatic power tool
    71.
    发明授权
    Exhaust means for pneumatic power tool 失效
    排气装置用于气动电动工具

    公开(公告)号：US5022469A

    公开(公告)日：1991-06-11

    申请号：US461403

    申请日：1990-01-05

    Applicant: Sven P. J. Westerberg

    Inventor： Sven P. J. Westerberg

    IPC: B23Q11/00 ,  B25F5/02 ,  F01N13/00

    CPC classification number: F01N13/001 ,  B23Q11/0078 ,  B23Q11/0096 ,  B25F5/02 ,  Y10S173/02

    Abstract: A sound depressing exhaust means for a pneumatic power tool with a substantially cylindrical housing (10) and a vane motor (11) with exhaust port means (23), has an annular casing (41) surrounding a portion of the housing (10), and four expansion chambers (31-32, 34, 36, 39) arranged in series and combined with four flow restrictions (33, 37, 30, 35) and a sound trap (38). All of the expansion chambers are annular and located concentrically relative to the tool housing (10), and one of the flow restrictions has an annular screen (37) separating two of these chambers (34, 36). The last two of the expansion chambers (36, 39) in the exhaust flow direction contain high frequency absorbing elements (43, 44) of foamed plastic.

    Abstract translation: 一种用于具有基本上圆柱形壳体（10）的气动动力工具和具有排气口装置（23）的叶片马达（11）的降噪排气装置，具有围绕壳体（10）的一部分的环形壳体（41） 以及四个膨胀室（31-32,34,36,39），它们与四个流量限制（33,37,30,35）和一个隔音器（38）串联布置。 所有膨胀室都是环形的并且相对于工具壳体（10）同心地定位，并且一个流动限制件具有分隔这些腔室（34,36）中的两个的环形筛网（37）。 在排气流动方向上的最后两个膨胀室（36,39）包含发泡塑料的高频吸收元件（43,44）。

    Sound attenuator for pneumatic motors
    73.
    发明授权
    Sound attenuator for pneumatic motors 失效
    气动马达声音衰减器

    公开(公告)号：US4756230A

    公开(公告)日：1988-07-12

    申请号：US943734

    申请日：1986-12-19

    Applicant: Jerry D. Shew

    Inventor： Jerry D. Shew

    IPC: B25D17/12 ,  F01N13/00 ,  F01N1/08

    CPC classification number: F01N13/001 ,  B25D17/12

    Abstract: A reciprocating piston and cylinder pneumatic motor with a sound-reducing system that diffuses exhausting air by directing it across the curved outer surface of the cylinder.

    Abstract translation: 具有减声系统的往复式活塞和气缸气动马达，其通过将排气空气引导通过气缸的弯曲外表面而扩散排气。

    Exhaust muffler for a two-cycle opposed cylinder engine
    74.
    发明授权
    Exhaust muffler for a two-cycle opposed cylinder engine 失效
    排气消声器用于双循环相对缸发动机

    公开(公告)号：US4413705A

    公开(公告)日：1983-11-08

    申请号：US326774

    申请日：1981-12-02

    Applicant: Hisashi Inaga ,  Takashi Fukuoka

    Inventor： Hisashi Inaga ,  Takashi Fukuoka

    IPC: B27B17/00 ,  F01N1/06 ,  F01N1/08 ,  F01N13/00 ,  F01N99/00 ,  F02B63/02 ,  F02B75/02 ,  F02B75/18 ,  F02B75/24

    CPC classification number: F01N13/08 ,  B27B17/00 ,  F01N1/06 ,  F01N13/001 ,  F02B63/02 ,  F02B75/243 ,  F01N2590/06 ,  F02B2075/025 ,  F02B2075/1808

    Abstract: An exhaust muffler for a two-cycle opposed cylinder engine of simultaneous ignition type having two cylinders opposing to each other in the horizontal direction. The muffler has conical members disposed to oppose to exhaust ports of the cylinders, the exhaust ports being arranged in a side-by-side relation. The conical members form conical annular discharge passages leading from respective exhaust ports. The discharge passages have flattened peripheral outlets of different opening areas. The flows of the exhaust gas from respective cylinders are introduced through the flattened peripheral outlets of the discharge passages into a common diffusion chamber, so that the attenuation of the pressure waves and release of heat of exhaust gas are promoted to reduce the exhaust noise of the engine.

    Abstract translation: 一种用于同时点火式的双冲程相对缸式发动机的排气消声器，其具有在水平方向上彼此相对的两个气缸。 消音器具有与气缸的排气口相对配置的锥形部件，排气口并排配置。 锥形构件形成从相应排气口引出的锥形环形排出通道。 排放通道具有不同开口区域的扁平的外围出口。 来自各气缸的排气的流动通过排出通道的扁平的外围出口引入公共扩散室，从而促进了压力波的衰减和废气的释放，从而降低了排气噪声 发动机。

    Compressed-gas-operated reciprocating-piston devices
    75.
    发明授权
    Compressed-gas-operated reciprocating-piston devices 失效
    压缩气动往复活塞装置

    公开(公告)号：US4303133A

    公开(公告)日：1981-12-01

    申请号：US125085

    申请日：1980-02-27

    Applicant: Reginald O. Godolphin

    Inventor： Reginald O. Godolphin

    IPC: B25D17/12 ,  F01N13/00 ,  B21J3/00

    CPC classification number: F01N13/001 ,  B25D17/12 ,  Y10S173/02

    Abstract: A compressed-gas-operated reciprocating-piston device, e.g. a concrete breaker, rock drill or chipping hammer, has a cylinder component of composite construction, comprising a rigid inner metal tube in which the piston reciprocates and a moulded outer sleeve of rubber or plastics material, e.g. polyurethane, which surrounds the tube over the majority of its length and is bonded thereto. The sleeve has three integral moulded longitudinal ribs in which are moulded longitudinal passages for transmission of compressed air to the cylinder interior. An outer tubular muffler of rubber or plastics material surrounds the composite cylinder component and defines a sound-reducing path for exhaust gas from the cylinder to thge atmosphere. The exhaust gas is discharged into spaces defined between adjacent ribs of the sleeve within the muffler, these spaces forming part of an expansion chamber in the muffler. This expansion chamber communicates with the atmosphere either directly through exhaust ports or via a restriction and a second expansion chamber to a final duct leading to an exhaust opening in the muffler wall.

    Abstract translation: 压缩气体操作的往复活塞装置，例如。 混凝土破碎机，凿岩机或切屑锤，具有复合结构的圆筒部件，其包括刚性内金属管，活塞在其中往复运动，橡胶或塑料材料的模制外套， 聚氨酯，其在其大部分长度上围绕管并且结合到其上。 套筒具有三个整体成型的纵向肋，其中模制的纵向通道用于将压缩空气传送到气缸内部。 橡胶或塑料材料的外部管状消声器围绕复合气缸部件并且限定了用于从气缸到大气的废气的减声路径。 废气被排放到消声器内的套筒的相邻肋之间限定的空间中，这些空间形成消声器中的膨胀室的一部分。 该膨胀室直接通过排气口或通过限制和第二膨胀室与大气连通到通向消声器壁中的排气口的最终管道。

    Vacuum sweeper
    76.
    发明授权
    Vacuum sweeper 失效
    真空清扫机

    公开(公告)号：US3964888A

    公开(公告)日：1976-06-22

    申请号：US509341

    申请日：1974-09-25

    Applicant: Reinhard Hahner ,  Wilbert Reibetanz ,  Karl Wanner

    Inventor： Reinhard Hahner ,  Wilbert Reibetanz ,  Karl Wanner

    IPC: A47L7/00 ,  A47L9/00 ,  F01N13/00 ,  F04D23/00 ,  F04D29/66 ,  B01D50/00

    CPC classification number: A47L7/0095 ,  A47L9/0081 ,  F01N13/001 ,  F04D17/168 ,  F04D23/008 ,  F04D29/668 ,  Y10S55/03 ,  Y10S55/21 ,  Y10S55/34

    Abstract: A vacuum sweeper, particularly for collecting borings, has an upright cylindrical receptacle with a tangential inlet for admission of an air stream which carries borings and/or other solids and an open top which is overlapped by a platelike air filter disposed below a cover which is separably connected with the receptacle and has downwardly extending projections to prevent upward flexing of the filter. A side channel vacuum pump is installed in the cover and has an inlet which draws air from the receptacle via filter and a passage of the cover, and an outlet which communicates with a sound deadening annular channel provided in the cover and concentrically surrounding the rotor of the pump. The open end of the channel extends upwardly and contains a spherical float which rises therein to a level indicating the rate of air flow from the channel. Certain surfaces bounding the channel in the cover are lined with layers of closed-pore deformable foamed synthetic plastic material which contributes to the soundproofing action. The rotor of the pump rotates about a vertical axis and is driven by an electric, hydraulic or pneumatic motor.

    Abstract translation: 特别是用于收集钻孔的真空吸尘器具有直立的圆柱形容器，其具有切向入口，用于容纳承载钻孔和/或其他固体的空气流，以及敞开的顶部，其与布置在盖下方的板状空气过滤器重叠， 与容器可分离地连接并且具有向下延伸的突起以防止过滤器向上弯曲。 侧通道真空泵安装在盖中，并且具有通过过滤器和盖的通道从容器抽取空气的入口以及与设置在盖中的消声环形通道连通并且同心地围绕转子的转子的出口 泵。 通道的开口端向上延伸并且包含一个球形浮子，其在其中上升到指示来自通道的气流速率的水平。 围绕盖中的通道的某些表面衬有有孔隔离变形的泡沫合成塑料材料层，这有助于隔音作用。 泵的转子围绕垂直轴线旋转，并由电动，液压或气动马达驱动。

    EXHAUST-GAS TREATMENT ARRANGEMENT
    80.
    发明公开
    EXHAUST-GAS TREATMENT ARRANGEMENT 审中-公开

    公开(公告)号：US20240183297A1

    公开(公告)日：2024-06-06

    申请号：US18528504

    申请日：2023-12-04

    Applicant: Purem GmbH

    Inventor： Silas Bräuning ,  Wolfgang Datz ,  Markus Henzler ,  Oleksandr Velyaev ,  Tobias Wolf ,  Arthur Wieland

    IPC: F01N3/08 ,  F01N13/00

    CPC classification number: F01N3/0835 ,  F01N13/001 ,  F01N2610/03

    Abstract: An exhaust-gas treatment arrangement for an exhaust gas system of an internal combustion engine includes a first exhaust-gas treatment unit and an exhaust-gas treatment assembly being arranged axially one after the other in the direction of a longitudinal axis of a flow path. The flow path includes the first exhaust-gas treatment unit and the exhaust-gas treatment assembly. A hydrocarbon introduction assembly for introducing hydrocarbon into exhaust gas flowing through the exhaust-gas treatment arrangement is provided. The hydrocarbon introduction assembly includes a bypass flow channel which includes a flow-channel inlet region for receiving exhaust gas upstream of the first exhaust-gas treatment unit and a flow-channel outlet region for discharging exhaust gas or/and hydrocarbon into the flow path downstream of the first exhaust-gas treatment unit and upstream of the exhaust-gas treatment assembly. The hydrocarbon introduction assembly includes a hydrocarbon discharging unit for discharging hydrocarbon into the bypass flow channel.

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