发明授权
US6149221A Hydraulic control unit, in particular for operating a folding roof of a
vehicle
有权
液压控制单元,特别是用于操作车辆的折叠屋顶
- 专利标题: Hydraulic control unit, in particular for operating a folding roof of a vehicle
- 专利标题(中): 液压控制单元,特别是用于操作车辆的折叠屋顶
-
申请号: US258964申请日: 1999-03-01
-
公开(公告)号: US6149221A公开(公告)日: 2000-11-21
- 发明人: Laurentius A. G. Mentink
- 申请人: Laurentius A. G. Mentink
- 申请人地址: WI Butler
- 专利权人: Applied Power Inc.
- 当前专利权人: Applied Power Inc.
- 当前专利权人地址: WI Butler
- 优先权: NLX1008455 19980303
- 主分类号: B60J7/12
- IPC分类号: B60J7/12 ; F15B11/20 ; F16D31/02
摘要:
Hydraulic control unit, in particular for the folding roof of a vehicle, comprising a reservoir for hydraulic fluid, a pump for drawing hydraulic fluid out of the reservoir and provided with a delivery port for delivering compressed hydraulic fluid, and also at least one first hydraulic actuator of the double-acting type with a first and a second variable working chamber, which working chambers are separated by a piston and are provided with a first and a second connection respectively for supplying hydraulic fluid to said working chambers, further comprising a control valve assembly with a first exit port and a second exit port, which are connected respectively to the first and the second connection of the first actuator, for controlling the movements of the first actuator. The control valve assembly comprises one or more operable control valves and is designed for selectively connecting one of the two or both exit ports thereof to the delivery port of the pump or the reservoir. In addition, an AND valve is provided, having a first and a second entry port and an exit port. The entry ports of the AND valve are connected here respectively to the first and the second exit port of the control valve assembly. The exit port of the AND valve forms a third exit port for controlling one or more following actuators of the hydraulic control unit.
公开/授权文献
- US4932057A Parallel transmission to mask data radiation 公开/授权日:1990-06-05
信息查询