专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP0096963A2 Load sensing system 失效
标题翻译： Ladenachweissystem。
公开(公告)号：EP0096963A2
公开(公告)日：1983-12-28
申请号：EP83302623.0
申请日：1983-05-10
申请人： EATON CORPORATION
发明人： Yip, James Kwok-Fun , Novacek, William John
IPC分类号： B62D5/07 , B62D5/08 , F15B11/05
CPC分类号： B62D5/09 , Y10T137/87185
摘要： An improved fluid controller (17) is disclosed of the type for use in a load sensing hydrostatic steering system. The system includes a load sensing priority flow control valve (15) of the type which operates on a dynamic load signal. The controll includes a spool valve (95) and a sleeve valve (97) which cooperate to define a plurality of orifices including a main variable flow control orifice (71) and a variable orifice (75) through which fluid flows from the return side of a steering cylinder (19) to the return port (25) of the controller. A variable drain orifice (76) communicates between the main flow path, downstream of the main orifice (71) and the return port (25). As the control- ler valving moves from its neutral position toward an operating position, the orifice (75) begins to open at least as soon as the main orifice (71) and reaches a predetermined flow area before the main orifice )71) reaches that predetermined flow area. In addition, the drain orifice (76) remains open at least until the variable orifice (75) begins to open to reduce undesirable high transition pressures in the controller.

2. 发明公开

EP1020343A3 Load reaction steering unit for unequal area cylinder 有权
标题翻译：对于不平整表面转向油缸最后反应转向装置
公开(公告)号：EP1020343A3
公开(公告)日：2003-02-05
申请号：EP99126059.7
申请日：1999-12-28
申请人： EATON CORPORATION
发明人： Novacek, William Jon , Yip, James Kwok-Fun
IPC分类号： B62D5/097
CPC分类号： B62D5/097 , Y10T137/86662
摘要： A fluid controller (15) of the type which controls the flow of fluid to an unequal area steering cylinder (25), wherein the controller is of the load reaction type. The controller (15) includes valving (27) which, when it is in neutral, defines a load reaction fluid path (LR) permitting fluid communication between the control fluid ports (21, and 23) through the fluid meter (29) in response to an external load imposed on the cylinder (25). In accordance with the invention, the valving (27) includes a fluid path (97,95,99,71,75) between the load reaction fluid path (LR) and the return port (19), when the valving is in neutral. When the rod end chamber (A) is contracting, fluid is drawn from the return port into the load reaction fluid path (LR), preventing cavitation, and when the head end chamber (B) is contracting, fluid flows from the load reaction fluid path (LR) to the return port (19), preventing pressure intensification.

3. 发明公开

EP0096963A3 Load sensing system 失效
标题翻译：负载感应系统
公开(公告)号：EP0096963A3
公开(公告)日：1985-01-09
申请号：EP83302623
申请日：1983-05-10
申请人： EATON CORPORATION
发明人： Yip, James Kwok-Fun , Novacek, William John
IPC分类号： B62D05/06 , B62D05/08 , F15B11/05
CPC分类号： B62D5/09 , Y10T137/87185
摘要： An improved fluid controller (17) is disclosed of the type for use in a load sensing hydrostatic steering system. The system includes a load sensing priority flow control valve (15) of the type which operates on a dynamic load signal. The controll includes a spool valve (95) and a sleeve valve (97) which cooperate to define a plurality of orifices including a main variable flow control orifice (71) and a variable orifice (75) through which fluid flows from the return side of a steering cylinder (19) to the return port (25) of the controller. A variable drain orifice (76) communicates between the main flow path, downstream of the main orifice (71) and the return port (25). As the control- ler valving moves from its neutral position toward an operating position, the orifice (75) begins to open at least as soon as the main orifice (71) and reaches a predetermined flow area before the main orifice )71) reaches that predetermined flow area. In addition, the drain orifice (76) remains open at least until the variable orifice (75) begins to open to reduce undesirable high transition pressures in the controller.

4. 发明授权

EP1020343B1 Load reaction steering unit for unequal area cylinder 有权
标题翻译：对于不平整表面转向油缸最后反应转向装置
公开(公告)号：EP1020343B1
公开(公告)日：2006-11-29
申请号：EP99126059.7
申请日：1999-12-28
申请人： Eaton Corporation
发明人： Novacek, William Jon , Yip, James Kwok-Fun
IPC分类号： B62D5/097
CPC分类号： B62D5/097 , Y10T137/86662

5. 发明公开

EP1020343A2 Load reaction steering unit for unequal area cylinder 有权
标题翻译：对于不平整表面转向油缸最后反应转向装置
公开(公告)号：EP1020343A2
公开(公告)日：2000-07-19
申请号：EP99126059.7
申请日：1999-12-28
申请人： EATON CORPORATION
发明人： Novacek, William Jon , Yip, James Kwok-Fun
IPC分类号： B62D5/097
CPC分类号： B62D5/097 , Y10T137/86662
摘要： A fluid controller (15) of the type which controls the flow of fluid to an unequal area steering cylinder (25), wherein the controller is of the load reaction type. The controller (15) includes valving (27) which, when it is in neutral, defines a load reaction fluid path (LR) permitting fluid communication between the control fluid ports (21, and 23) through the fluid meter (29) in response to an external load imposed on the cylinder (25). In accordance with the invention, the valving (27) includes a fluid path (97,95,99,71,75) between the load reaction fluid path (LR) and the return port (19), when the valving is in neutral. When the rod end chamber (A) is contracting, fluid is drawn from the return port into the load reaction fluid path (LR), preventing cavitation, and when the head end chamber (B) is contracting, fluid flows from the load reaction fluid path (LR) to the return port (19), preventing pressure intensification.

6. 发明授权

EP0096963B1 Load sensing system 失效
标题翻译：负载感应系统
公开(公告)号：EP0096963B1
公开(公告)日：1987-01-14
申请号：EP83302623.0
申请日：1983-05-10
申请人： EATON CORPORATION
发明人： Yip, James Kwok-Fun , Novacek, William John
IPC分类号： B62D5/07 , B62D5/08 , F15B11/05
CPC分类号： B62D5/09 , Y10T137/87185

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式