Controlling valve operation using pressure
US-2017172079-A1 · Jun 22, 2017 · US
Valve
US2025383028A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025383028-A1 |
| Application number | US-202318879683-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 12, 2023 |
| Priority date | Jul 8, 2022 |
| Publication date | Dec 18, 2025 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A valve includes: a housing; a spool having a throttle port, disposed in the housing to be movable in an axial direction, and partitioning off the housing into a primary chamber and a secondary chamber; and a biasing member configured to bias the spool toward a primary chamber side in an axial direction, wherein the spool operates in the axial direction due to a pressure difference between the primary chamber and the secondary chamber, and the biasing member is disposed on the primary chamber side or a secondary chamber side with respect to the throttle port.
First claim
Opening claim text (preview).
1 . A valve comprising: a housing; a spool having a throttle port, disposed in the housing to be movable in an axial direction, and partitioning off the housing into a primary chamber and a secondary chamber; and a biasing member configured to bias the spool toward a primary chamber side in an axial direction, wherein the spool operates in the axial direction due to a pressure difference between the primary chamber and the secondary chamber, and the biasing member is disposed on the primary chamber side or a secondary chamber side with respect to the throttle port. 2 . The valve according to claim 1 , wherein the spool has a step portion with which an end of the biasing member comes into contact. 3 . The valve according to claim 2 , wherein the step portion is provided on an inner peripheral surface of the spool. 4 . The valve according to claim 1 , wherein the spool is further provided with an open-close port configured to switch a communication state between the primary chamber and the secondary chamber, and the biasing member is disposed on the secondary chamber side with respect to the open-close port. 5 . The valve according to claim 1 , further comprising a primary chamber side biasing member configured to bias the spool toward the secondary chamber side in the axial direction, wherein the throttle port and the primary chamber are in communication with each other via a flow path that bypasses the primary chamber side biasing member. 6 . The valve according to claim 2 , further comprising a primary chamber side biasing member configured to bias the spool toward the secondary chamber side in the axial direction, wherein the throttle port and the primary chamber are in communication with each other via a flow path that bypasses the primary chamber side biasing member. 7 . The valve according to claim 3 , further comprising a primary chamber side biasing member configured to bias the spool toward the secondary chamber side in the axial direction, wherein the throttle port and the primary chamber are in communication with each other via a flow path that bypasses the primary chamber side biasing member. 8 . The valve according to claim 4 , further comprising a primary chamber side biasing member configured to bias the spool toward the secondary chamber side in the axial direction, wherein the throttle port and the primary chamber are in communication with each other via a flow path that bypasses the primary chamber side biasing member.
Assignees
Inventors
Classifications
- F16K31/363Primary
the fluid acting on a piston (F16K31/38 takes precedence) · CPC title
using sliding elements · CPC title
- F16K17/30Primary
spring-loaded · CPC title
with cylindrical valve members · CPC title
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Frequently asked questions
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- What does patent US2025383028A1 cover?
- A valve includes: a housing; a spool having a throttle port, disposed in the housing to be movable in an axial direction, and partitioning off the housing into a primary chamber and a secondary chamber; and a biasing member configured to bias the spool toward a primary chamber side in an axial direction, wherein the spool operates in the axial direction due to a pressure difference between the …
- Who is the assignee on this patent?
- Eagle Ind Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F16K31/363. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Dec 18 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).