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公开(公告)号：US11680589B1
公开(公告)日：2023-06-20
申请号：US17589947
申请日：2022-02-01
Applicant: Sun Hydraulics, LLC
Inventor： Bernd Zähe
CPC classification number: F15B13/07 , F15B1/26 , F15B11/162 , F15B11/20 , F15B13/022 , F15B13/027 , F16K15/063 , F16K31/363 , F15B2211/41527 , F15B2211/522 , F15B2211/781
Abstract: An example valve includes a valve piston configured to block fluid flow from a first port of the valve to a second port of the valve when the valve is in a closed position; a forward flow spring applying a first biasing force on the valve piston in a distal direction; a reverse flow spring applying a second biasing force on the valve piston in a proximal direction; and a pressure setting spring applying a third biasing force on a check element in the distal direction, wherein fluid from the first port applies a fluid force on the check element in the proximal direction, and fluid from a pilot port applies a respective fluid force on the check element in the distal direction.
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公开(公告)号：US11598353B1
公开(公告)日：2023-03-07
申请号：US17589949
申请日：2022-02-01
Applicant: Sun Hydraulics, LLC
Inventor： Bernd Zähe
Abstract: An example valve includes: a first port, a second port, and a load-sense port; a valve piston configured to block fluid flow from the first port to the second port when the valve piston is in a neutral position; a reverse flow spring applying a first biasing force on the valve piston in a proximal direction; and a pressure compensation spring disposed in a spring chamber and applying a second biasing force on the valve piston in a distal direction, wherein when pressure level of fluid at the second port is higher than pressure level of fluid at the load-sense port, fluid flows from the second port to the spring chamber and the load-sense port, and wherein when pressure level of fluid at the load-sense port is higher than pressure level of fluid at the second port, fluid of the load-sense port is provided to the spring chamber.
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公开(公告)号：US20210332899A1
公开(公告)日：2021-10-28
申请号：US16860227
申请日：2020-04-28
Applicant: Sun Hydraulics, LLC
Inventor： Bernd Zähe
Abstract: An example counterbalance valve includes: a poppet configured to be subjected to a fluid force by fluid received at a first port, and a fluid force by a pilot pressure fluid signal received at a pilot port; a first setting spring disposed in a first chamber and applying a first biasing force on the poppet; and a second setting spring disposed in a second chamber and applying a second biasing force on the poppet, wherein the first chamber and the second chamber are vented to an external environment of the counterbalance valve, wherein the second setting spring is in parallel with the first setting spring such that an equivalent biasing force acting on the poppet in the distal direction comprises a sum of the first biasing force and the second biasing force.
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公开(公告)号：US11047401B2
公开(公告)日：2021-06-29
申请号：US16686424
申请日：2019-11-18
Applicant: Sun Hydraulics, LLC
Inventor： Bernd Zähe
IPC: F15B13/042 , F15B13/02 , F15B13/044 , F16K31/40 , F16K17/10 , F16K31/06
Abstract: An example valve includes: (i) a pilot seat member comprising: (a) one or more channels fluidly coupled to a first port of the valve, (b) a pilot seat, and (c) a pilot sleeve portion comprising a pilot chamber and a cross-hole disposed in an exterior peripheral surface of the pilot sleeve portion; (ii) a pilot check member disposed in the pilot chamber and subjected to a biasing force of a setting spring disposed in the pilot chamber to seat the pilot check member at the pilot seat; and (iii) a solenoid actuator sleeve slidably accommodated about the exterior peripheral surface of the pilot sleeve portion of the pilot seat member, wherein the solenoid actuator sleeve includes a cross-hole disposed in an exterior peripheral surface of the solenoid actuator sleeve, wherein the cross-hole of the solenoid actuator sleeve is fluidly coupled to a second port of the valve.
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公开(公告)号：US11009896B2
公开(公告)日：2021-05-18
申请号：US16502249
申请日：2019-07-03
Applicant: Sun Hydraulics, LLC
Inventor： Bernd Zähe , Andy Borja
Abstract: An example valve includes: a first port fluidly coupled to a chamber of an actuator; a second port fluidly coupled to a reservoir; a third port configured to provide an output pilot fluid signal and receive an input pilot fluid signal; a fourth port fluidly coupled to a source of fluid; a main poppet configured to be subjected to a first fluid force of fluid received at the first port acting on the main poppet in a proximal direction to cause the main poppet to be seated at a main poppet seat to block fluid flow to and from the first port; a piston configured to move axially to contact the main poppet; and a spool that is axially movable between a first position and a second position to operate the valve in either a pilot-operated check valve mode of operation or a proportional flow control mode of operation.
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Patent Agency Ranking
公开(公告)号：US10914324B2
公开(公告)日：2021-02-09
申请号：US16662364
申请日：2019-10-24
Applicant: Sun Hydraulics, LLC
Inventor： Oscar Pena , Bernd Zähe
Abstract: An example valve includes a main stage, a pilot stage, and a solenoid actuator. The main stage includes a sleeve and a piston axially movable within the sleeve. The piston defines a cavity therein. The pilot stage includes a pilot pin received at, and axially movable in, the cavity of the piston, where the piston forms a pilot seat at which the pilot pin is seated when the valve is in a closed state. The solenoid actuator includes a solenoid coil, an armature, and a solenoid spring. The solenoid spring applies a biasing force in a distal direction on the pilot pin to seat the pilot pin at the pilot seat. Energizing the solenoid coil causes the armature to move in a proximal direction, thereby reducing the biasing force that the solenoid spring applies on the pilot pin.
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公开(公告)号：US10753488B2
公开(公告)日：2020-08-25
申请号：US16054861
申请日：2018-08-03
Applicant: Sun Hydraulics, LLC
Inventor： Chad Lampton
Abstract: An example valve includes: a housing having a first longitudinal cavity therein; a sleeve disposed, at least partially, in the first longitudinal cavity, where the sleeve has a second longitudinal cavity therein, and includes a first seat formed as a protrusion from an interior peripheral surface of the sleeve; a poppet mounted within the second longitudinal cavity and configured to move axially therein; and a bushing mounted, at least partially, in the second longitudinal cavity, such that the bushing is floating and is allowed to move axially in the second longitudinal cavity, where the bushing is hollow and defines a first port at a distal end of the bushing and defines a second seat at a proximal end of the bushing, and where the sleeve defines a second port and a third port disposed on an exterior peripheral surface of the sleeve.
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公开(公告)号：US10662979B1
公开(公告)日：2020-05-26
申请号：US16215120
申请日：2018-12-10
Applicant: Sun Hydraulics, LLC
Inventor： Bernd Zähe
Abstract: An example valve includes: a piston movable between a neutral position and an actuated position, wherein in the neutral position: a second port of the valve is fluidly coupled to a first port, and a third port is fluidly decoupled from the second port; a solenoid actuator sleeve movable between an unactuated state and an actuated state, wherein in the actuated state, the solenoid actuator sleeve allows pilot fluid to apply a fluid force on a piston in a distal direction; a first feedback spring; and a second feedback spring disposed in series with the first feedback spring, wherein the first feedback spring and the second feedback spring cooperate to apply a biasing force in a proximal direction on the piston against the fluid force, wherein the piston is configured to move to the actuated position based on a relationship between the fluid force and the biasing force.
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公开(公告)号：USD877613S1
公开(公告)日：2020-03-10
申请号：US29674426
申请日：2018-12-21
Applicant: Sun Hydraulics, LLC
Designer： Surry McFaul , David Lizotte
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公开(公告)号：US20200056631A1
公开(公告)日：2020-02-20
申请号：US16662364
申请日：2019-10-24
Applicant: Sun Hydraulics, LLC
Inventor： Oscar Pena , Bernd Zähe
Abstract: An example valve includes a main stage, a pilot stage, and a solenoid actuator. The main stage includes a sleeve and a piston axially movable within the sleeve. The piston defines a cavity therein. The pilot stage includes a pilot pin received at, and axially movable in, the cavity of the piston, where the piston forms a pilot seat at which the pilot pin is seated when the valve is in a closed state. The solenoid actuator includes a solenoid coil, an armature, and a solenoid spring. The solenoid spring applies a biasing force in a distal direction on the pilot pin to seat the pilot pin at the pilot seat. Energizing the solenoid coil causes the armature to move in a proximal direction, thereby reducing the biasing force that the solenoid spring applies on the pilot pin.
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