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    MUFFLER WITH ACOUSTIC ABSORPTION INSERT FOR LIMITED CLEARANCE PNEUMATIC DEVICE APPLICATIONS
    2.
    发明授权
    MUFFLER WITH ACOUSTIC ABSORPTION INSERT FOR LIMITED CLEARANCE PNEUMATIC DEVICE APPLICATIONS 有权
    具有吸音USE FOR USE IN气动装置一有限间隙消声器

    公开(公告)号：EP1183446B1

    公开(公告)日：2005-11-16

    申请号：EP99951537.2

    申请日：1999-09-20

    申请人： 3M Innovative Properties Company

    发明人： HILLING, George, D. ,  BLETTE, Russell, E. ,  TREDINNICK, Kenneth, F.

    IPC分类号： F01N1/24 ,  F01N7/00 ,  F01N1/08 ,  B25D17/12

    CPC分类号： F01N1/082 ,  B25D17/12

    摘要： A muffler (20) for attenuating noise produced by a pneumatic device having limited clearance. The muffler (20) includes a housing (22), a base (24) and an acoustic absorption insert (100). The housing (22) defines an upstream end and a downstream end (34), with the downstream end (36) being closed. Further, the housing tapers from a maximum width of less than approximately 1.5 inches (38 mm) to the downstream end. The base (24) is secured to the housing at the upstream end and includes a tube (26) for directing airflow and sound waves into the housing. Finally, the acoustic absorption insert (100) is disposed within the housing and includes a web of fibers configured to absorb sound waves. The muffler can be utilized with a pneumatic valve having limited space available for receiving the muffler, providing noise attenuation with minimal back pressure.

    Compressed-gas-operated reciprocating-piston devices
    5.
    发明公开
    Compressed-gas-operated reciprocating-piston devices 失效
    具有往复运动的活塞的压缩空气设备。

    公开(公告)号：EP0015700A1

    公开(公告)日：1980-09-17

    申请号：EP80300557.8

    申请日：1980-02-26

    申请人： CompAir Construction and Mining Limited

    发明人： Godolphin, Reginald Owen ,  Clark, Malcolm

    IPC分类号： B25D17/12 ,  F01N1/08

    CPC分类号： F01N13/001 ,  B25D17/12 ,  Y10S173/02

    摘要： A compressed-gas-operated reciprociating-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 (40, 40A) in which the piston (12, 12A) reciprocates and a moulded outer sleeve (41,41 A) 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 (43, 43A) in which are moulded longitudinal passages (32, 32A) for transmission of compressed air to the cylinder interior. An outer tubular muffler (50, 50A) of rubber or plastics material surrounds the composite cylinder component and defines a sound-reducing path for exhaust gas from the cylinder to the atmosphere. The exhaust gas is discharged into two spaces (83, 84, 87 or 83A, 84A) defined between two pairs of adjacent ribs (43, 43A) of the sleeve within the muffler, these two spaces forming part of an expansion chamber in the muffler. This expansion chamber communicates with the atmosphere either directly through exhaust ports (52) (Figures 1 to 3), or via a restriction (86A) and a second expansion chamber (88A, 87A) in the muffler to a final duct (91A) leading to the exhaust opening (52A) and formed in the thickness of the muffler wall (Figures 6 to 9). The combination of ribbed sleeve and muffler provides improved sound-damping and exhaust silencing for the device.

    NOISE REDUCING DEVICE FOR A PNEUMATIC TOOL
    7.
    发明公开
    NOISE REDUCING DEVICE FOR A PNEUMATIC TOOL 审中-公开
    隔音装置用于气动工具

    公开(公告)号：EP2293903A1

    公开(公告)日：2011-03-16

    申请号：EP08874517.9

    申请日：2008-12-19

    申请人： Longyear TM, Inc.

    发明人： ROBERTS, Neil, James

    IPC分类号： B25D17/12

    CPC分类号： B25D17/12 ,  F16L55/052

    摘要： A noise reducing device includes a housing defining an expansion chamber therein and having a longitudinal axis along the length of the expansion chamber and a tool port in fluid communication with the expansion chamber, the tool port being oriented transversely relative to the longitudinal axis so as to cause fluid directed from the tool port to the expansion chamber to whirl about the expansion chamber.

    NOISE ABATEMENT DEVICE FOR A PNEUMATIC TOOL
    8.
    发明公开
    NOISE ABATEMENT DEVICE FOR A PNEUMATIC TOOL 审中-公开
    降噪装置用于气动工具

    公开(公告)号：EP2167282A2

    公开(公告)日：2010-03-31

    申请号：EP08826379.3

    申请日：2008-07-14

    申请人： Longyear TM, Inc.

    发明人： ROBERTS, Neil, James ,  MURRAY, William

    IPC分类号： B25C1/18 ,  B25D17/11

    CPC分类号： B25D17/12 ,  Y10S173/02

    摘要： A system and method are described that facilitate bilateral private interaction between participants who wish to initiate personal or business arrangements anonymously or without exposure except to identified trusted parties=and the system and method act as an intermediary allowing the participants, typically buyers and sellers, to be matched based upon requests for and offers of goods and services, without revealing the identity or other identifying information about either the items or the participants until the participants choose to reveal that information.

    Pneumatisch betriebener Hammer
    9.
    发明公开
    Pneumatisch betriebener Hammer 失效
    气动锤。

    公开(公告)号：EP0166681A1

    公开(公告)日：1986-01-02

    申请号：EP85810187.6

    申请日：1985-04-26

    申请人： SIG Schweizerische Industrie-Gesellschaft

    发明人： Steiner, Heinz

    IPC分类号： B25D17/12

    CPC分类号： B25D17/12 ,  Y10S173/02

    摘要： Ein metallisches Zylinderrohr (29) zur Bildung von Zylinderräumen (46, 47) mittels eines Arbeitskolbens (23) ist durch drei Rippen (43-45) aus Kunststoff in einem zylindrischen Gehäuse (2) ebenfalls aus Kunststoff gehaltert. Die Rippen (43-45) sind hohl zur Bildung von Durchflusskanälen (40-42) und trennen drei Kammern (48, 49, 50) im Zwischenraum zwischen Zylinderrohr (29) und Gehäuse (2) ab. Über der Deckwand (10) für die Zylinderräume (46, 47) und Kammern (48, 49, 50) befindet sich ein weiterer Raum (51) mit Durchgängen zu den Kammern (48-50) oberhalb eines Verbundzylinders (3). Im unteren Teil des Gehäuses (2) befindet sich eine Resonanzkammer (58), wobei die Durchgänge von zwei der Kammern (48, 49), die das Abgas aus den Zylinderräumen (46, 47) erhalten, durch den Verbundzylinder unterschiedlich sind. Die dritte Kammer (50) führt zum Auspuff (59). Damit werden dieAbgase über zwei parallele Kammern (48, 49) einer in Reihe liegenden dritten Kammer (50) zugeführt. Durch einen zusätzlichen Helmholtz-Resonator mit der Resonanzkammer (58) kann eine starke Dämpfung des Schalldruckes bewirkt werden.

    摘要翻译： 金属缸筒（29），以形成气缸室（46，47）通过在圆筒状的壳体工作活塞（23）由塑料制成三个肋（43-45）的装置（2）也由塑料支撑。 肋（43-45）是空心的，以形成流动通道（40-42）和分离缸筒（29）和壳体之间在中间空间中的三个腔室（48,49，50）（2）。 的气缸室（46，47）和腔室（48，49，50）的甲板壁（10）上方的空间进一步（51）设置有通道，以上述的化合物汽缸（3）的腔室（48-50）。 在外壳的下部部分（2）是一个谐振腔（58），其中的两个腔室（48，49）的通路，从所述气缸室（46，47）接收的排气是通过复合气缸不同。 第三腔室（50）通向所述排气（59）。 为了使废气是串联提供的第三室（50）的两个平行腔室（48，49）。 通过添加一个亥姆霍兹共振器与所述共鸣腔（58）具有的声压的大的衰减，可以实现。