公开(公告)号：US07255132B2

公开(公告)日：2007-08-14

申请号：US10522323

申请日：2003-07-30

申请人： George Edmond ,  Steven Kenchington ,  Simon Paul Kuderovitch

发明人： George Edmond ,  Steven Kenchington ,  Simon Paul Kuderovitch

IPC分类号： F15B13/044

CPC分类号： F16K31/0613 ,  F16K11/044 ,  F16K31/0627 ,  Y10T137/86622 ,  Y10T137/86702

摘要： The present invention relates to a control valve for controlling flow of hydraulic fluid. The control valve comprises: a valve housing (10); a sleeve (11) slidable in a valve chamber in the valve housing (10); a first fluid conduit (12) for connecting the valve chamber to a source of pressurised hydraulic fluid; a second fluid conduit (14) for connecting the valve chamber to a fluid return for returning hydraulic fluid to a reservoir; and a third fluid conduit (16) for connecting the valve chamber to deliver hydraulic fluid to and receive hydraulic fluid from apparatus which uses the hydraulic fluid flow controlled by the control valve. The sleeve (11) is a tubular sleeve having, a tubular passage therethrough. The valve housing has a pair of spaced apart valve seat surfaces (22, 23), a first valve seat surface (22) which is engageable by a first end of the tubular sleeve (11) and a second valve seat surface (23) which is engageable by a second end of the tubular sleeve (11). The third fluid conduit (16) opens on to the valve chamber by way of a port which is surrounded by the first valve seat surface (22).

摘要翻译： 本发明涉及一种用于控制液压流体流量的控制阀。 所述控制阀包括：阀壳体（10）; 可在阀壳体（10）中的阀室中滑动的套筒（11）; 用于将阀室连接到加压液压流体源的第一流体导管（12）; 用于将所述阀室连接到用于将液压流体返回到储存器的流体回路的第二流体导管（14） 以及用于连接阀室以将液压流体输送到使用由控制阀控制的液压流体流的设备的液压流体的第三流体导管（16）。 套筒（11）是具有穿过其中的管状通道的管状套管。 阀壳体具有一对间隔开的阀座表面（22,23），可由管状套管（11）的第一端接合的第一阀座表面（22）和第二阀座表面（23），第二阀座表面 可由管状套筒（11）的第二端接合。 第三流体管道（16）通过被第一阀座表面（22）包围的端口打开到阀室上。

公开(公告)号：US07204211B2

公开(公告)日：2007-04-17

申请号：US10530121

申请日：2003-09-01

申请人： Steven Kenchington ,  Simon Paul Kuderovitch

发明人： Steven Kenchington ,  Simon Paul Kuderovitch

IPC分类号： F01L9/02

CPC分类号： F01L9/025 ,  F01L9/02 ,  F01L2009/028

摘要： The present invention (with reference to FIG. 1) is an arrangement of an internal combustion engine poppet valve and a hydraulic actuator therefor comprising: an actuator housing (16); spring means (104,105) for biassing the poppet valve (101) into engagement with a valve seat therefor; a first piston (1) of a first cross-sectional area slidable in a first chamber formed in the actuator housing (16), the first piston (1) having a passage therethrough for the flow of hydraulic fluid; and a second piston (15) of a second cross-sectional area smaller than the first cross-sectional area slidable in a second chamber formed in the actuator housing (16), the second chamber opening on to the first chamber; wherein: the first chamber is connectable to a pressurised hydraulic fluid supply line and to a hydraulic fluid return line; and the second piston has an upper surface (110) engageable by a lower surface of the first piston; and the first piston is configured without a passage which is both aligned with the second piston and which has a portion of constant cross-sectional area greater than the said second cross-sectional area.

摘要翻译： 本发明（参考