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US 7,845,370 B2Granted
Equalization of pressure in an electronically controlled valve
AssigneeEnfield Technologies, LLC
InventorsDaniel C. Cook, Blake D. Carter, Roger Edwin Howe
Life of this patent
Estimating the term…
Abstract
Disclosed herein is an electronically controlled valve. The electronically controlled valve includes a valve body and a spool. The valve body includes at least one fluid inlet port, at least one fluid outlet port, an upper cavity, and a lower cavity. The spool is disposed within the valve body. The spool includes a first end and an opening. The opening allows the lower cavity to be in fluid communication with the upper cavity.
Claims18
A controlled valve comprising:
- a valve body comprising at least one fluid inlet port, at least one fluid outlet port, an upper cavity, and a lower cavity;
- a spring at the upper cavity;
- a coil header assembly comprising a voice coil portion and a base portion having an opening, wherein the coil header assembly is at the upper cavity, wherein the spring is at one side of the base portion, and wherein a spool connecting portion extends from an opposite side of the base portion;
- a spool disposed within the valve body, wherein the spool comprises a first end and an inner passage, wherein the first end is connected to the coil header assembly at the spool connecting portion, and wherein the inner passage allows the lower cavity to be in fluid communication with the upper cavity through the opening in the coil header assembly;
- and
- a motor housing at the valve body, wherein the spring is disposed between the motor housing and the base portion.
3 more elements
A servo valve comprising:
- a valve body comprising at least one fluid inlet port, at least one fluid outlet port, an upper cavity, and a lower cavity;
- a valve actuator assembly disposed within the upper cavity, wherein the valve actuator assembly comprises a base portion, a voice coil portion, and a spool connecting portion, wherein the base portion comprises a hole in fluid communication with the upper cavity, wherein the voice coil portion extends from a first side of the base portion, wherein the spool connecting portion is connected to the base portion, wherein the spool connecting portion extends from a second side of the base portion, wherein the spool connecting portion comprises an opening extending therethrough, and wherein the opening of the spool connecting portion extends through the base portion;
- a sleeve between the upper cavity and the lower cavity;
- a spool slidably disposed within the sleeve, wherein the spool comprises a fluid conduit extending from a first open end of the spool to a second open end of the spool, wherein the first open end is received by the opening of the spool connecting portion, and wherein the second open end is at the lower cavity;
- and
- a motor housing and an upper spring, wherein the upper spring is disposed between the motor housing and the base portion.
3 more elements
A servo valve comprising:
- a valve body comprising at least one fluid inlet port, at least one fluid outlet port, an upper cavity, and a lower cavity;
- a spring at the upper cavity;
- a valve actuator assembly disposed within the upper cavity, wherein the valve actuator assembly comprises a base portion, a voice coil portion, and a spool connecting portion, wherein the base portion comprises a hole in fluid communication with the upper cavity, wherein the voice coil portion extends from the base portion, wherein the spool connecting portion is connected to the base portion, and wherein the spool connecting portion comprises an opening therein;
- a sleeve between the upper cavity and the lower cavity;
- a spool slidably disposed within the sleeve, wherein the spool comprises a fluid conduit extending from a first open end of the spool to a second open end of the spool, wherein the first open end is received by the opening of the spool connecting portion, and wherein the second open end is at the lower cavity;
- and
- a motor housing at the valve body, wherein the spring is disposed between the motor housing and the base portion.
4 more elements
Dependencies are inferred from the claim text.