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1. 发明授权

US3730207A Valve arrangement for hydraulic steering systems 失效
标题翻译：液压转向系统的阀装置
公开(公告)号：US3730207A
公开(公告)日：1973-05-01
申请号：US3730207D
申请日：1971-10-04
申请人： DANFOSS AS
发明人： CHRISTENSEN T
IPC分类号： B62D5/08 , F15B11/08
CPC分类号： B62D5/08 , Y10T137/2554 , Y10T137/2567
摘要： The invention relates to a valve arrangement for hydraulic steering systems in which the two pipes supplying a working motor are connected to a control means and to each other by way of a manually operable short-circuiting valve and two suction nonreturn valves which act in opposite directions to each other and between which a compensating pipe branches off.
摘要翻译：本发明涉及一种用于液压转向系统的阀装置，其中提供工作电动机的两个管道通过手动可操作的短路阀和两个吸入止回阀连接到控制装置并且彼此连接彼此相反的方向，补偿管之间分支。

5. 发明专利

SE403174B 未知
公开(公告)号：SE403174B
公开(公告)日：1978-07-31
申请号：SE7400859
申请日：1974-01-23
申请人： DANFOSS AS
发明人： BAATRUP J V , CHRISTENSEN T
IPC分类号： B62D5/08 , B62D5/09 , F15B13/043 , F15B11/02 , F15B13/02
摘要： The invention relates to a hydraulic control apparatus of the type used in vehicle steering systems. In all such systems there is a reversible type hydraulic motor connected to the steering linkage. The motor has complementary expansible chambers. With the use of control means pressurized fluid is selectively delivered to one chamber which is caused to expand concomitantly with the collapsing of the other chamber from which fluid is returned to a sump. There is provided in the control and power circuit throttle valves having respective opening positions which correspond to the pressure difference on both sides of the valves. Between the passages which extend to the two control circuit throttle valves is a pressure comparator which is operable to vary the pressure upstream of the power circuit throttle valve in proportion to the pressure upstream of the control circuit throttle valve.

7. 发明专利

DK344780A 未知
公开(公告)号：DK344780A
公开(公告)日：1981-02-15
申请号：DK344780
申请日：1980-08-11
申请人： DANFOSS AS
发明人： THOMSEN S E , CHRISTENSEN T
IPC分类号： F15B9/08 , B62D5/07 , B62D5/087 , B62D5/09 , F16K17/22 , F15B
摘要： The invention relates to a steering control unit for a bidirectional servomotor which is connectable to steerable wheels. A steering wheel controlled quantity setting unit of a known type has ports connectable to a pump and a return tank and two control ports through which metered quantities of fluid flow to opposite sides of the servomotor and to other parts of the apparatus for actuating the servomotor. A directional control valve for selectively directing pressurized fluid from a power circuit to opposite sides of the servomotor is controlled by a control circuit containing the setting unit. A utility valve having the pressure regulating and control and power valve capabilities required for this type of apparatus is characterized by having only a single slide spool for performing all of these functions.

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