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11. 发明授权

US5697137A Pneumatically powered fastener installation tool 失效
标题翻译：气动紧固件安装工具
公开(公告)号：US5697137A
公开(公告)日：1997-12-16
申请号：US656049
申请日：1996-05-31
申请人： William Harvey Frearson , Terence Gilbert , John William Saxon
发明人： William Harvey Frearson , Terence Gilbert , John William Saxon
IPC分类号： B21J15/04 , B21J15/06 , B21J15/22
CPC分类号： B21J15/22 , B21J15/043 , B21J15/105 , B21J15/326 , Y10T29/5373 , Y10T29/53739 , Y10T29/53748
摘要： In a fastener installation tool which is pneumatically powered to instal a blind rivet or bolt by a relative pulling action, a pneumatic/hydraulic intensifier (12, 13) is included to actuate hydraulically the pulling stroke of a head piston (22) which provides the relative pulling action. It is desirable to design such tools so that they have increased levels of safety for the persons using and operating them. In such a tool, there is provided a safety device including a valve for disabling the supply of air to one side of a pneumatic piston and cylinder device (15) and a push-rod (51) operative connected to the valve and extending along the inside of the air supply conduit The push rod normally contacts the displaceable end (43) of the cylinder when the displaceable end is in its safe position so as to operate the valve to allow the supply of air to the pneumatic chamber. The push-rod is movable, when the displaceable end of the cylinder is displaced from its safe position, to operate the valve so as to disable the supply of air under pressure to the cylinder on the aforesaid side of the piston.
摘要翻译：在紧固件安装工具中，其通过相对牵引作用被气动驱动以安装盲铆钉或螺栓，包括气动/液压增压器（12,13）以液压驱动头部活塞（22）的牵引行程，所述头部活塞（22）提供相对拉动。期望设计这样的工具，使得它们对于使用和操作它们的人员具有更高的安全性。在这种工具中，提供了一种安全装置，其包括用于禁止向气动活塞和气缸装置（15）的一侧供应空气的阀和可操作地连接到阀的推杆（51），并且沿着供气管道的内部当可移动端处于其安全位置时，推杆通常接触气缸的可移动端（43），以便操作阀以允许向气动室供应空气。当气缸的可移动端从其安全位置移位时，推杆是可移动的，以操作阀，以便禁止在活塞的上述侧面上的气缸的压力下供应空气。

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