公开(公告)号：US20100236399A1

公开(公告)日：2010-09-23

申请号：US12406813

申请日：2009-03-18

申请人： Navneet Gulati

发明人： Navneet Gulati

IPC分类号： F01B3/10 ,  F04B1/29

CPC分类号： F04B49/128 ,  F04B1/324 ,  F04B49/22 ,  F04B2201/0805 ,  F04B2201/12051 ,  Y10T137/86694 ,  Y10T137/8671

摘要： A fluid device includes a variable swashplate adapted for movement between a first position and a second position. A control piston is adapted to selectively move the variable swashplate between the first and second positions. A control valve is in fluid communication with the control piston. The control valve includes a sleeve defining a spool bore, at least one fluid inlet passage in fluid communication with a fluid source and at least one control passage in fluid communication with the control piston. The control fluid passage includes an opening at the spool bore. A spool is disposed in the spool bore of the sleeve. The spool includes a metering surface that selectively communicates fluid between the fluid inlet passage and the control fluid passage. The metering surface has a first end and a second end. The metering surface having a tapered surface disposed between the first and second ends.

摘要翻译： 流体装置包括适于在第一位置和第二位置之间移动的可变斜盘。 控制活塞适于在第一和第二位置之间选择性地移动可变斜盘。 控制阀与控制活塞流体连通。 控制阀包括限定滑阀孔的套筒，与流体源流体连通的至少一个流体入口通道和与控制活塞流体连通的至少一个控制通道。 控制流体通道包括在阀芯孔处的开口。 阀芯设在套管的阀芯孔中。 阀芯包括选择性地在流体入口通道和控制流体通道之间连通流体的计量表面。 计量表面具有第一端和第二端。 计量表面具有设置在第一和第二端之间的锥形表面。

公开(公告)号：US08647075B2

公开(公告)日：2014-02-11

申请号：US12406813

申请日：2009-03-18

申请人： Navneet Gulati

发明人： Navneet Gulati

IPC分类号： F04B1/26

CPC分类号： F04B49/128 ,  F04B1/324 ,  F04B49/22 ,  F04B2201/0805 ,  F04B2201/12051 ,  Y10T137/86694 ,  Y10T137/8671

摘要： A fluid device includes a variable swashplate adapted for movement between a first position and a second position. A control piston is adapted to selectively move the variable swashplate between the first and second positions. A control valve is in fluid communication with the control piston. The control valve includes a sleeve defining a spool bore, at least one fluid inlet passage in fluid communication with a fluid source and at least one control passage in fluid communication with the control piston. The control fluid passage includes an opening at the spool bore. A spool is disposed in the spool bore of the sleeve. The spool includes a metering surface that selectively communicates fluid between the fluid inlet passage and the control fluid passage. The metering surface has a first end and a second end. The metering surface having a tapered surface disposed between the first and second ends.

摘要翻译： 流体装置包括适于在第一位置和第二位置之间移动的可变斜盘。 控制活塞适于在第一和第二位置之间选择性地移动可变斜盘。 控制阀与控制活塞流体连通。 控制阀包括限定滑阀孔的套筒，与流体源流体连通的至少一个流体入口通道和与控制活塞流体连通的至少一个控制通道。 控制流体通道包括在阀芯孔处的开口。 阀芯设在套管的阀芯孔中。 阀芯包括选择性地在流体入口通道和控制流体通道之间连通流体的计量表面。 计量表面具有第一端和第二端。 计量表面具有设置在第一和第二端之间的锥形表面。