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公开(公告)号：US08496449B2
公开(公告)日：2013-07-30
申请号：US12515221
申请日：2007-11-21
申请人： Bruce E. Knuth , Kay Lap Gilbert Chan , Theo H. H. Den Ridder , Frantz D. Stanford , Roger R. Pili
发明人： Bruce E. Knuth , Kay Lap Gilbert Chan , Theo H. H. Den Ridder , Frantz D. Stanford , Roger R. Pili
IPC分类号： F04B35/00
摘要： A rotary air motor driven hydraulic pump has separate pressure and return actuators and first and second stage eccentric driven pistons 180 degrees out of phase and driven by the motor through a gear reduction unit. The pressure and return actuators are on/off/proportional valves and the pump has two pressure relief valves with one adjustable from outside of the pump for a user to set a pressure limit of the pump. Above a certain output pressure limit, a bypass valve shunts flow in excess of that needed to precharge the second stage compression chamber from the first stage piston to an elastic reservoir from which the hydraulic fluid pumped by the pump is drawn. To make the pump stall at a certain output pressure, a pressure limiting valve can be used that cuts off the air supply to the pump at the desired output pressure.
摘要翻译： 旋转气动马达驱动的液压泵具有单独的压力和返回致动器以及180度异相的第一和第二级偏心驱动活塞，并且由马达通过齿轮减速单元驱动。 压力和返回致动器是开/关/比例阀，泵具有两个压力释放阀，一个可从泵的外部调节，用于使用者设定泵的压力极限。 在一定的输出压力极限之上，旁路阀将流过超过将第二级压缩室预先从第一级活塞预充气到由泵泵送的液压流体的弹性容器所需的流量。 为了使泵在一定的输出压力下停止，可以使用限压阀，以期望的输出压力切断泵的空气供应。
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公开(公告)号：USD573608S1
公开(公告)日：2008-07-22
申请号：US29279593
申请日：2007-05-03
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公开(公告)号：US20100215521A1
公开(公告)日：2010-08-26
申请号：US12515221
申请日：2007-11-21
申请人： Bruce E. Knuth , Kay Lap Gilbert Chan , Theo H. H. Den Ridder , Frantz D. Stanford , Roger R. Pili
发明人： Bruce E. Knuth , Kay Lap Gilbert Chan , Theo H. H. Den Ridder , Frantz D. Stanford , Roger R. Pili
IPC分类号： F04B17/00
摘要： A rotary air motor driven hydraulic pump has separate pressure and return actuators and first and second stage eccentric driven pistons 180 degrees out of phase and driven by the motor through a gear reduction unit. The pressure and return actuators are on/off/proportional valves and the pump has two pressure relief valves with one adjustable from outside of the pump for a user to set a pressure limit of the pump. Above a certain output pressure limit, a bypass valve shunts flow in excess of that needed to precharge the second stage compression chamber from the first stage piston to an elastic reservoir from which the hydraulic fluid pumped by the pump is drawn. To make the pump stall at a certain output pressure, a pressure limiting valve can be used that cuts off the air supply to the pump at the desired output pressure.
摘要翻译： 旋转气动马达驱动的液压泵具有单独的压力和返回致动器以及180度异相的第一和第二级偏心驱动活塞，并且由马达通过齿轮减速单元驱动。 压力和返回致动器是开/关/比例阀，泵具有两个压力释放阀，一个可从泵的外部调节，用于使用者设定泵的压力极限。 在一定的输出压力极限之上，旁路阀将流过超过将第二级压缩室预先从第一级活塞预充气到由泵泵送的液压流体的弹性容器所需的流量。 为了使泵在一定的输出压力下停止，可以使用限压阀，以期望的输出压力切断泵的空气供应。
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