IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0773158
(2010-05-04)
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등록번호 |
US-8683795
(2014-04-01)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
6 |
초록
▼
A method for controlling fluid flow. A valve system may be kept in an open state in response to a fluid being at a selected level of pressure at any of a plurality of ports in a valve. The valve system may be for the valve, and the valve may comprise a housing, the plurality of ports on the housing,
A method for controlling fluid flow. A valve system may be kept in an open state in response to a fluid being at a selected level of pressure at any of a plurality of ports in a valve. The valve system may be for the valve, and the valve may comprise a housing, the plurality of ports on the housing, and the valve system located inside the housing. The valve system may be configured to be in a closed state when an absence of the selected level of pressure is present at all of the plurality of ports and in the open state when the selected level of pressure is present at any of the plurality of ports. The valve system may be kept in the closed state in response to an absence of the fluid being at the selected level of pressure at all of the plurality of ports.
대표청구항
▼
1. An apparatus comprising: a housing;a plurality of ports on the housing;a valve system located inside the housing in which the valve system is configured to be in a closed state when an absence of a selected level of pressure is present at all of the plurality of ports and in an open state when th
1. An apparatus comprising: a housing;a plurality of ports on the housing;a valve system located inside the housing in which the valve system is configured to be in a closed state when an absence of a selected level of pressure is present at all of the plurality of ports and in an open state when the selected level of pressure is present at any of the plurality of ports, wherein the housing, the plurality of ports, and the valve system comprises a number of flow valves biased to block the plurality of ports when the selected level of pressure is absent at the all of the plurality of ports, and wherein the valve system further comprises a number of one way valves in which each of the number of one way valves is associated with a port in the plurality of ports and a cavity in the housing, wherein the each of the number of one way valves is configured to pass a fluid from a corresponding port into the cavity to generate a pressure, in which the pressure moves the number of flow valves into the open state when the selected level of pressure is present at the any of the plurality of ports;a controller; anda motor configured to move a boom between a retracted position and an extended position, wherein the valve is connected to the controller and the motor. 2. The apparatus of claim 1, wherein the plurality of ports comprises: a first port;a second port;a third port; anda fourth port. 3. The apparatus of claim 2, wherein the first port and the second port are connected to each other by a number of relief valves. 4. The apparatus of claim 2, wherein the first port and the second port are connected to a controller and the third port and the fourth port are connected to a hydraulic motor, wherein the controller controls the hydraulic motor to control movement of a telescoping boom. 5. The apparatus of claim 1, wherein the number of one way valves comprises at least one of a number of check valves and a number of shuttle valves. 6. The apparatus of claim 1, wherein the valve system further comprises a return system configured to allow the fluid to flow from the cavity into a number of ports in the plurality of ports. 7. The apparatus of claim 6, wherein the return system comprises: a flow restrictor; anda second number of one way valves. 8. A hydraulic control system for a hydraulic motor configured to move a telescoping boom in an aircraft, the hydraulic control system comprising: a housing;a plurality of ports on the housing, in which the plurality of ports comprises a first port, a second port, a third port, and a fourth port in which the first port and the second port are connected to a controller and the third port and the fourth port are connected to the hydraulic motor, wherein the controller controls the hydraulic motor to control movement of the telescoping boom;a number of one way valves in which each of the number of one way valves is associated with a port in the plurality of ports and a cavity in the housing, in which the each of the number of one way valves is configured to pass a fluid from a corresponding port into the cavity to generate a pressure, and in which the number of one way valves comprises at least one of a number of check valves and a number of shuttle valves; anda valve system located inside the housing in which the housing, the plurality of ports, the number of one way valves, and the valve system form a valve, and in which the valve system is configured to be in a closed state when an absence of a selected level of pressure is present at all of the plurality of ports and in an open state when the selected level of pressure is present at any of the plurality of ports in which the valve system comprises a number of flow valves biased to block the plurality of ports when the selected level of pressure is absent at the all of the plurality of ports, in which the pressure generated by passing the fluid into the cavity moves the number of flow valves into the open state when the selected level of pressure is present at the any of the plurality of ports; and a return system configured to allow the fluid to flow from the cavity into a number of ports in the plurality of ports in which the return system comprises a flow restrictor and a second number of one way valves. 9. The hydraulic control system of claim 8, wherein the first port and the second port are connected to each other by a number of relief valves. 10. A method for controlling fluid flow, the method comprising: responsive to a fluid being at a selected level of pressure at any of a plurality of ports in at least one valve, keeping a valve system in an open state in which the valve system is for the at least one valve comprising a housing; the plurality of ports on the housing; and the valve system located inside the housing in which the valve system is configured to be in a closed state when an absence of the selected level of pressure is present at all of the plurality of ports and in the open state when the selected level of pressure is present at the any of the plurality of ports;responsive to an absence of the fluid being at the selected level of pressure at the all of the plurality of ports, keeping the valve system in the closed state; andpassing the fluid from a port in the plurality of ports through a number of one way valves into a cavity in the housing to generate a pressure, wherein the pressure moves the valve system into the open state when the selected level of pressure is present at the port in the plurality of ports. 11. The method of claim 10 further comprising: responsive to the valve system being in the closed state and the fluid being at the selected level of pressure at the any of the plurality of ports in the valve, changing the valve system from the closed state to the open state. 12. The method of claim 10 further comprising: responsive to the valve system being in the open state and the absence of the fluid being at the selected level of pressure at the any of the plurality of ports in the valve, changing the valve system from the open state to the closed state. 13. The method of claim 10, wherein the valve system comprises a number of flow valves and wherein the step of keeping the valve system in the closed state comprises: responsive to the absence of the fluid being at the selected level of pressure at the all of the plurality of ports, biasing the number of flow valves to block the plurality of ports to keep the valve system in the closed state when the selected level of pressure is absent at the all of the plurality of ports. 14. The method of claim 10, wherein the plurality of ports comprises a first port, a second port, a third port, and a fourth port in which the first port and the second port are connected to a controller for controlling a refueling boom and the third port and the fourth port are connected to a hydraulic motor. 15. The method of claim 10 further comprising: passing the fluid through a port in the plurality of ports to a hydraulic motor to cause the hydraulic motor to perform one of extending a refueling boom and retracting the refueling boom for a tanker aircraft. 16. The method of claim 10 further comprising: allowing the fluid to flow from the cavity into a number of ports in the plurality of ports. 17. A method for controlling fluid flow for a hydraulic motor in a refueling system for an aircraft, the method comprising: responsive to a fluid being at a selected level of pressure at any of a plurality of ports in at least one valve, keeping a valve system in an open state in which the valve system is for the at least one valve comprising a housing; the plurality of ports on the housing in which the plurality of ports comprises a first port, a second port, a third port, and a fourth port in which the first port and the second port are connected to a controller for controlling a refueling boom in the refueling system and the third port and the fourth port are connected to the hydraulic motor; and the valve system located inside the housing in which the valve system is configured to be in a closed state when an absence of the selected level of pressure is present at all of the plurality of ports and in the open state when the selected level of pressure is present at any of the plurality of ports, in which the valve system comprises a number of flow valves;responsive to an absence of the fluid being at the selected level of pressure at the all of the plurality of ports, biasing the number of flow valves to block the plurality of ports when the selected level of pressure is absent at the all of the plurality of ports to keep the valve system in the closed state;responsive to the valve system being in the closed state and the fluid being at the selected level of pressure at the any of the plurality of ports in the valve, changing the valve system from the closed state to the open state;responsive to the valve system being in the open state and the absence of the fluid being at the selected level of pressure at the any of the plurality of ports in the valve, changing the valve system from the open state to the closed state;responsive to the valve system being in the open state, passing the fluid through a port in the plurality of ports to the hydraulic motor to cause the hydraulic motor to perform one of extending the refueling boom and retracting the refueling boom; andallowing the fluid to flow from a cavity in the housing into a number of ports in the plurality of ports.
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