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    Failsafe pilot supply selector valve
    1.
    发明授权
    Failsafe pilot supply selector valve 有权
    故障排除先导供油选择阀

    公开(公告)号：US09371843B2

    公开(公告)日：2016-06-21

    申请号：US14155074

    申请日：2014-01-14

    Applicant: Caterpillar Inc.

    Inventor： Paul Moser ,  Jeffrey Allan Digby ,  Dennis Ray Barber ,  Wendell D. Stahl

    IPC: F16K11/07 ,  F15B13/06 ,  F15B20/00 ,  F16K31/06

    CPC classification number: F15B13/06 ,  F15B20/00 ,  F15B2211/20576 ,  F15B2211/41518 ,  F15B2211/635 ,  F15B2211/67 ,  F15B2211/8626 ,  F15B2211/8636 ,  F15B2211/8757 ,  F16K11/07 ,  F16K31/0613 ,  Y10T137/0318 ,  Y10T137/86574 ,  Y10T137/86622

    Abstract: A failsafe pilot selector valve may include at least one inlet port, a first outlet port, a second outlet port, and a biasing element. The failsafe pilot selector valve may have a first end position with the at least one inlet port in fluid communication with the first outlet port, a second end position with the at least one inlet port in fluid communication with the first outlet port, and an intermediate position between the first end position and the second end position with the at least one inlet port in fluid communication with the second outlet port. The biasing element may provide a biasing force to move the failsafe pilot selector valve to the first end position. The pilot selector valve can alternately provide pilot fluid to primary and redundant control elements of a redundantly controlled system in fluid communication with the outlet ports.

    Abstract translation: 故障安全导向换向阀可以包括至少一个入口端口，第一出口端口，第二出口端口和偏置元件。 故障安全导向选择阀可以具有第一端部位置，其中至少一个入口端口与第一出口端口流体连通，第二端部位置与至少一个入口端口与第一出口端口流体连通， 所述第一端部位置和所述第二端部位置之间的位置与所述至少一个入口端口与所述第二出口端口流体连通。 偏置元件可以提供偏置力以将故障保护先导换向阀移动到第一端位置。 先导选择阀可以交替地将先导流体提供给与出口端口流体连通的冗余控制系统的主要和冗余控制元件。

    Failsafe Pilot Supply Selector Valve
    2.
    发明申请
    Failsafe Pilot Supply Selector Valve 有权
    故障保护先导供应选择阀

    公开(公告)号：US20150198183A1

    公开(公告)日：2015-07-16

    申请号：US14155074

    申请日：2014-01-14

    Applicant: Caterpillar Inc.

    Inventor： Paul Moser ,  Jeffrey Allan Digby ,  Dennis Ray Barber ,  Wendell D. Stahl

    IPC: F15B13/06 ,  F16K31/06 ,  F16K11/07

    CPC classification number: F15B13/06 ,  F15B20/00 ,  F15B2211/20576 ,  F15B2211/41518 ,  F15B2211/635 ,  F15B2211/67 ,  F15B2211/8626 ,  F15B2211/8636 ,  F15B2211/8757 ,  F16K11/07 ,  F16K31/0613 ,  Y10T137/0318 ,  Y10T137/86574 ,  Y10T137/86622

    Abstract: A failsafe pilot selector valve may include at least one inlet port, a first outlet port, a second outlet port, and a biasing element. The failsafe pilot selector valve may have a first end position with the at least one inlet port in fluid communication with the first outlet port, a second end position with the at least one inlet port in fluid communication with the first outlet port, and an intermediate position between the first end position and the second end position with the at least one inlet port in fluid communication with the second outlet port. The biasing element may provide a biasing force to move the failsafe pilot selector valve to the first end position. The pilot selector valve can alternately provide pilot fluid to primary and redundant control elements of a redundantly controlled system in fluid communication with the outlet ports.

    Abstract translation: 故障安全导向换向阀可以包括至少一个入口端口，第一出口端口，第二出口端口和偏置元件。 故障安全导向选择阀可以具有第一端部位置，其中至少一个入口端口与第一出口端口流体连通，第二端部位置与至少一个入口端口与第一出口端口流体连通， 所述第一端部位置和所述第二端部位置之间的位置与所述至少一个入口端口与所述第二出口端口流体连通。 偏置元件可以提供偏置力以将故障保护先导换向阀移动到第一端位置。 先导选择阀可以交替地将先导流体提供给与出口端口流体连通的冗余控制系统的主要和冗余控制元件。

    Valve having right-angle proportional and directional pilot actuators
    5.
    发明授权
    Valve having right-angle proportional and directional pilot actuators 有权

    公开(公告)号：US09803661B2

    公开(公告)日：2017-10-31

    申请号：US14934568

    申请日：2015-11-06

    Applicant: Caterpillar Inc.

    Inventor： Dennis Ray Barber

    IPC: F16K11/07 ,  F16K31/124 ,  F15B13/02 ,  F16K31/122

    CPC classification number: F15B13/021 ,  F15B13/0435 ,  F16K11/07 ,  F16K31/1221

    Abstract: A valve is disclosed for use with a hydraulic circuit. The valve may have a valve block, a central bore formed in the valve block, an actuator passage formed in the valve block and intersecting with the central bore, and at least one of a supply and a drain passage. The valve may also have a control spool movable to selectively connect the actuator passage and the at least one of the supply passage and the drain passage. The control spool may have a base end, and a tip end with a tapered outer surface. The valve may also have a first actuator configured to selectively meter a flow of pilot fluid and having a feedback follower configured to ride along the tapered outer surface of the control spool, and a second actuator configured to selectively direct the pilot fluid to the base and tip ends of the control spool.

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