METERING VALVE FOR ABRASIVE MEDIA
    1.
    发明公开

    公开(公告)号:US20240198486A1

    公开(公告)日:2024-06-20

    申请号:US18589849

    申请日:2024-02-28

    IPC分类号: B24C7/00 F16K3/24 F16K31/122

    摘要: A metering valve for introducing media into a pressurized fluid includes media passaging having a media inlet for receiving media and a media outlet for dispensing media toward the pressurized fluid. The media passaging defines a flow path extending from the media inlet to the media outlet and is configured to permit flow of media along the flow path. A plunger, including a plunger head, is movable between a closed position in which the plunger head forms a seal to prevent flow of media through the media passaging and an open position in which the plunger head permits flow of media through the media passaging. The seal formed by the plunger head includes a first sealing interface and a second sealing interface downstream along the flow path of the first sealing interface.

    Valve, and applications thereof in robot systems

    公开(公告)号:US11913562B2

    公开(公告)日:2024-02-27

    申请号:US17976665

    申请日:2022-10-28

    摘要: In an implementation, a hydraulic valve includes a valve body, a cylindrical chamber within the valve body, and a cylindrical spool within the chamber. The spool is rotatable between at least a first position and a second position about a longitudinal axis parallel to a longitudinal axis of the chamber. The spool includes a landing and an eccentric channel that extends around a portion of an outer circumferential surface of the landing. In the first position, an inlet and an outlet of the hydraulic valve are fluidly coupled by the eccentric channel to allow a flow of a hydraulic fluid circumferentially around the landing from the inlet to the outlet. In the second position, the inlet and/or the outlet are obstructed by another portion of the outer circumferential surface of the landing to prevent the flow of the hydraulic fluid from the inlet to the outlet.

    Valve device
    5.
    发明授权

    公开(公告)号:US11761552B2

    公开(公告)日:2023-09-19

    申请号:US17497107

    申请日:2021-10-08

    申请人: DENSO CORPORATION

    IPC分类号: F16K27/04 F16K3/24

    摘要: A valve device includes a housing, a valve member, a valve seat member, a fixing member for fixing the valve seat member to the housing, and a housing-side seal portion. The housing has a valve chamber, and a housing-space inner wall forming a housing space communicating with the valve chamber. The housing-side seal portion blocks a flow of fluid between the valve seat member and the housing-space inner wall. The valve seat member has a tubular portion and a flange portion connected to the tubular portion. The flange portion is interposed between a facing surface of the housing-space inner wall and the fixing member in an axial direction. The fixing member is fixed to the housing-space inner wall in an airtight state. The housing-side seal portion is made of a rubber material and is interposed between the flange portion and the fixing member.

    VALVE DEVICE
    6.
    发明公开
    VALVE DEVICE 审中-公开

    公开(公告)号:US20230228341A1

    公开(公告)日:2023-07-20

    申请号:US18010049

    申请日:2021-05-28

    IPC分类号: F16K31/10 F16K3/24 F16K27/04

    摘要: A valve device having a valve housing (10, 54, 94, 166) and fluid ports (16, 18) disposed therein, which are connected to or separated from one another in a fluid-conveying manner by means of a valve piston (22) displaceable along its longitudinal axis (24) in its various travel positions, and having at least one latching device (26, 28) for latching the valve piston (22) in at least one of its travel positions, wherein individual latching means (30, 38, 170) of said latching device, when it is actuated by an external force, take latching positions spatially different from one another, which is characterized in that, with respect to the longitudinal axis (24) of the valve piston (22), the individual latching means (30, 38, 170) of the latching device (26, 28) take positions differing from one another both in the axial and in the radial direction in the individual latching positions.

    VALVE TOP
    9.
    发明申请
    VALVE TOP 审中-公开

    公开(公告)号:US20190024820A1

    公开(公告)日:2019-01-24

    申请号:US16068144

    申请日:2016-10-24

    发明人: Friedrich THURAU

    摘要: A valve top has a headpiece through which passes axially a spindle that can actuate a valve which is formed by a control disk that can rotate relative to an inlet disk, wherein the lateral surface of the spindle has, circumferentially on its side oriented away from the control disk, a curved path which receives at least one cam of a control sleeve which is arranged secure in rotation, is mounted over the end of the spindle and can be moved axially along the spindle, wherein the curved path is formed such that a vertical displacement of the control sleeve along the spindle brings about a defined rotation of the spindle.

    CURRENT CONTROL CIRCUIT
    10.
    发明申请

    公开(公告)号:US20180328514A1

    公开(公告)日:2018-11-15

    申请号:US15837094

    申请日:2017-12-11

    申请人: DENSO CORPORATION

    发明人: Yuta MIZUNO

    摘要: A current control circuit controls a linear solenoid valve provided in an oil pressure circuit to feed back an output oil pressure. The current control circuit includes a PWM signal generation part, a target setting part, a duty ratio setting part and a vibration detection circuit. The target setting part sets a target current value, which is a target value of an excitation current of the linear solenoid valve and periodically varies with a predetermined dither amplitude and a dither period longer than a pulse period of the PWM signal. The self-excited vibration detection part calculates a phase difference between the target current value and an actual current value and detects a presence of self-excited vibration because of a resonance of a feedback of the output oil pressure and driving of the linear solenoid valve in the dither period when the phase difference decreases relative to an increase in the target current value or the phase difference increases relative to a decrease in the dither period.