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1. 发明授权

EP3683478B1 SPOOL VALVE DEVICE 有权
公开(公告)号：EP3683478B1
公开(公告)日：2024-02-28
申请号：EP18856870.3
申请日：2018-09-11
发明人： TANAKA, Hideki , IMAMURA, Yukito , HARA, Kenjirou , YAMADA, Masahiro , MORIKAWA, Keita
IPC分类号： F16K37/00 , F16K31/04 , F15B13/044 , F15B19/00 , F15B20/00 , F15B13/04

2. 发明公开

EP4257830A1 POSITIONING VALVE CONTROL SYSTEM 审中-公开
公开(公告)号：EP4257830A1
公开(公告)日：2023-10-11
申请号：EP23166800.5
申请日：2023-04-05
申请人： Hamilton Sundstrand Corporation
发明人： ZAWILINSKI, David J. , SIMPSON, Scott W. , GOODMAN, Robert B.
IPC分类号： F15B13/044 , F15B13/16 , F15B15/28 , F15B5/00 , F15B15/17 , F15B15/20 , F01D17/14 , G05D16/00 , F15B9/08 , F15B13/043
摘要： A valving system (20) has an actuator member (32) connected to move with an actuator piston (38) and change the position of a valve member. There is a smaller face fluid chamber (37) acting on a small area piston face, and a larger face fluid chamber (64) acting on a larger face of the actuator piston. The torque motor (42) has an armature (46) and a flapper (48) caused to move by current received at the armature. The flapper moves between two fluid ports ( 42, 54) to control the pressure in the larger face chamber., The flapper further has a positioning extension (56) engaging a first feedback spring (61) operable between it and a forward face (41) of the actuator piston and providing a spring force in combination with a spring force from the positioning extension. A control (45) is operable to provide current (44) to the armature to control the fluid received in the larger face chamber. The controller is programmed to associate the current supplied to the armature to an actual position of the valve member. A method is also disclosed.

3. 发明公开

EP4229306A1 VORSTEUERGERÄT FÜR MINDESTENS EINEN VENTILANTRIEB EINES HYDRAULIKVENTILS UND VERFAHREN ZU DEREN BETRIEB 失效
公开(公告)号：EP4229306A1
公开(公告)日：2023-08-23
申请号：EP21794339.8
申请日：2021-10-13
申请人： Bucher Hydraulics GmbH
发明人： SALAH, Gerd , HARTMANN, Steffen
IPC分类号： F15B21/08 , F15B20/00 , F15B19/00 , F15B13/08 , G05B19/042 , F15B13/10 , G05B9/02 , F15B13/04 , F15B13/044

4. 发明公开

EP4219957A1 INTELLIGENT CONTROL SYSTEM OF HYDRAULIC HITCH DEVICE 审中-实审
公开(公告)号：EP4219957A1
公开(公告)日：2023-08-02
申请号：EP21870667.9
申请日：2021-01-07
申请人： Boding Jinggong Intelligent Technology (Shandong) Co., Ltd.
发明人： WANG, Lifeng , WU, Beibei , LI, Wuhai
IPC分类号： F15B13/044
摘要： Disclosed is an intelligent control system of a hydraulic hitch device, the intelligent control system comprising a hydraulic distributor (30). The hydraulic distributor (30) comprises a valve body (301) and a valve rod (302) arranged in the valve body (301), wherein two adjacent valve rod sections of the valve rod (302) are respectively provided with a raising speed control conical surface (302A) and a lowering speed control conical surface (302B); when the hydraulic distributor (30) is in a raising or lowering working position, a raising speed throttling clearance or a lowering speed throttling clearance is formed between the valve rod (302) and the valve body (301) at the raising speed control conical surface or the lowering speed control conical surface; and the axial displacement of the valve rod (302) is controlled by means of an electric control unit, such that the raising speed throttling clearance or the throttling area of the lowering speed control conical surface can be changed, thereby being capable of controlling the raising speed or the lowering speed of a farm tool. Since a first working oil path is provided with a stop valve, in a neutral state, the stop valve is closed under the acting force of a return spring, the connection between a rodless cavity of a lifting oil cylinder and the hydraulic distributor is cut off, such that the lift of a load of a farm tool caused by leakage of the hydraulic distributor is avoided, meeting the requirement of maintenance of the lift of the load of the farm tool.

5. 发明公开

EP4214419A1 ELECTRO-HYDROSTATIC ACTUATOR 审中-实审
公开(公告)号：EP4214419A1
公开(公告)日：2023-07-26
申请号：EP21890177.5
申请日：2021-11-05
申请人： G.W. Lisk Company, Inc.
发明人： TYLER, Jeffery, A.
IPC分类号： F15B15/14 , F01L9/21 , F04B17/04 , F15B13/044 , F15B15/20 , H01F7/16

6. 发明授权

EP3519720B1 MULTI-WAY VALVE AS WELL AS ACTUATOR COMPRISING SUCH A MULTI-WAY VALVE 有权
公开(公告)号：EP3519720B1
公开(公告)日：2023-02-22
申请号：EP17856904.2
申请日：2017-09-25
发明人： HÖGLUND, Anders , CARLSON, Urban
IPC分类号： F16K11/048 , F15B13/044 , F16K31/08

7. 发明公开

EP4121660A1 AUTOMATIC AIR BLEEDING SYSTEM FOR HYDRAULICS 审中-实审
公开(公告)号：EP4121660A1
公开(公告)日：2023-01-25
申请号：EP21717677.5
申请日：2021-03-16
申请人： Woodward, Inc.
发明人： SUTKOWSKI, Krzysztof , REDZINA, Marek Kazimierz
IPC分类号： F15B20/00 , F15B19/00 , F15B21/044 , F15B21/08 , F15B13/044 , F15B13/04

8. 发明公开

EP4118343A1 HYDRAULIKVENTILMODUL ZUR SICHEREN ABSCHALTUNG BEI AUSFALL EINER EXTERNEN STROMVERSORGUNG UND VERFAHREN ZUM BETRIEB EINES HYDRAULIKVENTILS 审中-实审
公开(公告)号：EP4118343A1
公开(公告)日：2023-01-18
申请号：EP21709918.3
申请日：2021-03-02
申请人： Bucher Hydraulics GmbH
发明人： SALAH, Gerd , HARTMANN, Steffen
IPC分类号： F15B13/04 , F15B13/044 , F15B13/10 , F15B20/00

9. 发明授权

EP3561313B1 AIRCRAFT HYDRAULIC SYSTEM WITH A DUAL SPOOL VALVE AND METHOD OF USE 有权转让
公开(公告)号：EP3561313B1
公开(公告)日：2022-08-31
申请号：EP19168998.3
申请日：2019-04-12
发明人： FOX, Michael Thomas , HOWELL, Eric Anton , ROACH, Jeffrey M.
IPC分类号： F15B13/04 , F15B13/044 , F15B13/08 , F15B20/00

10. 发明授权

EP3775578B1 SERVOVALVE DE RÉGULATION DE DÉBIT OU DE PRESSION D'UN FLUIDE 有权
公开(公告)号：EP3775578B1
公开(公告)日：2022-06-15
申请号：EP19718437.7
申请日：2019-03-21
发明人： OZZELLO, Guylain
IPC分类号： F15B13/044 , F15B13/04

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