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1. 发明申请

WO2012051554A1 FLOATING PISTON ACTUATOR FOR OPERATION WITH MULTIPLE HYDRAULIC SYSTEMS 审中-公开
标题翻译：浮动活塞致动器，用于多个液压系统的操作
公开(公告)号：WO2012051554A1
公开(公告)日：2012-04-19
申请号：PCT/US2011/056396
申请日：2011-10-14
申请人： WOODWARD HRT, INC. , LAUFFER, John , HENRICKSON, Rhett
发明人： LAUFFER, John , HENRICKSON, Rhett
IPC分类号： F15B15/14
CPC分类号： F15B15/1409 , B64C13/40 , Y02T50/44
摘要： A floating piston actuator for use with multiple hydraulic systems includes a housing and a piston assembly. The piston assembly includes an elongate shaft or ram, a secured piston coupled to the ram, and a set of moveable pistons moveably disposed within the housing chamber on the ram such that the set of moveable pistons are translatable relative to a longitudinal axis of the ram. The set of moveable pistons form at least three hydraulically separate actuator cylinders where each of the three hydraulically separate actuator cylinders are disposed in fluid communication with a corresponding pressurized fluid source. The floating piston actuator allows hydraulic redundancy while maintaining a similar length compared to existing multi-system actuators. The floating pistons can be arranged in multiple configurations to allow operation with a hydraulic system failure without force fight or binding and with a higher output force than conventional multi-system actuators.
摘要翻译：用于多个液压系统的浮动活塞致动器包括壳体和活塞组件。活塞组件包括细长轴或冲头，联接到冲头的固定活塞和可移动地设置在冲压器上的壳体室内的一组可移动活塞，使得该组可移动活塞可相对于冲头的纵向轴线平移。该组可移动活塞形成至少三个液压分离的致动器气缸，其中三个液压分离致动器气缸中的每一个设置成与相应的加压流体源流体连通。与现有的多系统执行器相比，浮动活塞致动器允许液压冗余，同时保持相似的长度。浮动活塞可以布置成多种构造，以允许液压系统故障的操作，而不会发生强力打击或装订，并且具有比常规多系统致动器更高的输出力。

2. 发明申请

WO2011008844A1 DIRECT DRIVE SERVOVALVE HAVING REDUNDANT DRIVE MOTORS 审中-公开
标题翻译：具有冗余驱动电机的直接驱动服务器
公开(公告)号：WO2011008844A1
公开(公告)日：2011-01-20
申请号：PCT/US2010/041956
申请日：2010-07-14
申请人： WOODWARD HRT, INC. , LAUFFER, John
发明人： LAUFFER, John
IPC分类号： F16K31/04
CPC分类号： F16K31/047 , Y10T137/86622
摘要： A direct drive servovalve (10) includes redundant drive motors (14) coupled to a common valve drive shaft (22,24) by a connection device (26). The connection device (26) is configured to allow operation of the servovalve (10) in the case where one or more of the drive motors (14) becomes inoperable, such as caused by jamming or binding of a rotor associated with the drive motor. By use of the connection device (26), in the event that one of the drive motors (14) was to become jammed, the remaining operable motors (14) can continue to stroke or cause translation of a valve member (18) of the direct drive servovalve (10) to allow its continued operation.
摘要翻译：直接驱动伺服阀（10）包括通过连接装置（26）联接到公共阀驱动轴（22,24）的冗余驱动马达（14）。连接装置（26）构成为在驱动马达（14）中的一个或多个变得不可操作的情况下，例如由于与驱动马达相关联的转子的卡住或结合而导致伺服阀（10）的运转。通过使用连接装置（26），在驱动马达（14）中的一个被卡住的情况下，剩余的可操作的马达（14）可以继续冲程或使得所述驱动马达（14）的阀构件直接驱动伺服阀（10）允许其继续运行。

3. 发明授权

EP2263012B1 HYDRAULIC ACTUATOR WITH FLOATING PISTONS 有权
标题翻译：游泳活塞液压机构
公开(公告)号：EP2263012B1
公开(公告)日：2013-05-01
申请号：EP08873340.7
申请日：2008-11-26
申请人： Woodward HRT, Inc.
发明人： FENNY, Carlos, A. , KINARD, Marc, W. , LAUFFER, John
IPC分类号： F15B15/14 , F15B20/00
CPC分类号： H03C1/34 , B64C13/42 , F15B2211/20576 , F15B2211/31535 , F15B2211/324 , F15B2211/7054 , F15B2211/7055 , F15B2211/7056 , F15B2211/7107 , F15B2211/8757 , H03C7/00 , Y02T50/44 , Y10T137/86606

4. 发明公开

EP2454509A1 DIRECT DRIVE SERVOVALVE HAVING REDUNDANT DRIVE MOTORS 审中-公开
标题翻译： SEVOVENTIL直接驱动具有冗余MOTORS
公开(公告)号：EP2454509A1
公开(公告)日：2012-05-23
申请号：EP10735385.6
申请日：2010-07-14
申请人： Woodward HRT, Inc.
发明人： LAUFFER, John
IPC分类号： F16K31/04
CPC分类号： F16K31/047 , Y10T137/86622
摘要： A direct drive servovalve (10) includes redundant drive motors (14) coupled to a common valve drive shaft (22,24) by a connection device (26). The connection device (26) is configured to allow operation of the servovalve (10) in the case where one or more of the drive motors (14) becomes inoperable, such as caused by jamming or binding of a rotor associated with the drive motor. By use of the connection device (26), in the event that one of the drive motors (14) was to become jammed, the remaining operable motors (14) can continue to stroke or cause translation of a valve member (18) of the direct drive servovalve (10) to allow its continued operation.

5. 发明公开

EP2263012A1 HYDRAULIC ACTUATOR WITH FLOATING PISTONS 有权
标题翻译：游泳活塞液压机构
公开(公告)号：EP2263012A1
公开(公告)日：2010-12-22
申请号：EP08873340.7
申请日：2008-11-26
申请人： Woodward HRT, Inc.
发明人： FENNY, Carlos, A. , KINARD, Marc, W. , LAUFFER, John
IPC分类号： F15B15/14 , F15B20/00
CPC分类号： H03C1/34 , B64C13/42 , F15B2211/20576 , F15B2211/31535 , F15B2211/324 , F15B2211/7054 , F15B2211/7055 , F15B2211/7056 , F15B2211/7107 , F15B2211/8757 , H03C7/00 , Y02T50/44 , Y10T137/86606
摘要： A hydraulic actuator is configured to provide redundant boost control to an aircraft within approximately the same space required by a single hydraulic cylinder. The hydraulic actuator includes a housing and a piston assembly disposed within the housing. The piston assembly includes a ram, a first piston secured to the ram, and second and third pistons disposed on the ram such that the second and third pistons are translatable relative to the longitudinal axis pf the ram. The pistons form two hydraulically separate actuator cylinders within the space required by a single cylinder which results in a reduction in the weight and size of the hydraulic actuator.

6. 发明公开

EP2627913A1 FLOATING PISTON ACTUATOR FOR OPERATION WITH MULTIPLE HYDRAULIC SYSTEMS 审中-公开
标题翻译： ZWISCHENKOLBENBETÄTIGER与多种液压系统使用
公开(公告)号：EP2627913A1
公开(公告)日：2013-08-21
申请号：EP11776645.1
申请日：2011-10-14
申请人： Woodward HRT, Inc.
发明人： LAUFFER, John , HENRICKSON, Rhett
IPC分类号： F15B15/14
CPC分类号： F15B15/1409 , B64C13/40 , Y02T50/44
摘要： A floating piston actuator for use with multiple hydraulic systems includes a housing and a piston assembly. The piston assembly includes an elongate shaft or ram, a secured piston coupled to the ram, and a set of moveable pistons moveably disposed within the housing chamber on the ram such that the set of moveable pistons are translatable relative to a longitudinal axis of the ram. The set of moveable pistons form at least three hydraulically separate actuator cylinders where each of the three hydraulically separate actuator cylinders are disposed in fluid communication with a corresponding pressurized fluid source. The floating piston actuator allows hydraulic redundancy while maintaining a similar length compared to existing multi-system actuators. The floating pistons can be arranged in multiple configurations to allow operation with a hydraulic system failure without force fight or binding and with a higher output force than conventional multi-system actuators.

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