초록 ▼

A remote visual liquid quantity indicator comprises a flexible cable within a flexible outer sleeve and allows a user to remotely determine the level of a liquid in a container, such as an accumulator without the need for electrical power or a direct line of sight to the container. The flexible cabl

A remote visual liquid quantity indicator comprises a flexible cable within a flexible outer sleeve and allows a user to remotely determine the level of a liquid in a container, such as an accumulator without the need for electrical power or a direct line of sight to the container. The flexible cable may be coupled between a reservoir sweeper of the accumulator and an indicator. Changes in the fluid level of the accumulator may provide a linear movement to the flexible cable, which in turn provides a change to the measurement reading of the indicator. The flexible cable/outer sleeve allows for the complex routing scenarios necessary in the congested spaces surrounding aircraft accumulators.

대표청구항 ▼

I claim: 1. An apparatus for remotely measuring fluid level in a container comprising: a flexible cable assembly capable of carrying linear movement having a first end portion and a second end portion; a fill responsive member in contact with said first end portion; and a remote indicator assembly

I claim: 1. An apparatus for remotely measuring fluid level in a container comprising: a flexible cable assembly capable of carrying linear movement having a first end portion and a second end portion; a fill responsive member in contact with said first end portion; and a remote indicator assembly in mechanical contact with said second end portion, wherein linear movement of said second end portion varies a readout on the remote indicator assembly; and an external connecting member located on an exterior surface of said container, said external connecting member having a seal, wherein said flexible cable assembly has a solid cylindrical section capable of passing through said seal. 2. The apparatus of claim 1, wherein said container comprises an accumulator. 3. The apparatus of claim 1, wherein said fill responsive member comprises a reservoir sweeper. 4. The apparatus of claim 1, wherein said flexible cable assembly comprises a push/pull member coaxially within an outer jacket. 5. The apparatus of claim 4, wherein said push/pull member comprises a stainless steel cable. 6. The apparatus of claim 4, wherein said outer jacket comprises nylon. 7. The apparatus of claim 4, wherein said outer jacket comprises polytetrafluoroethylene. 8. The apparatus of claim 1, wherein said remote indicator assembly comprises a ratio drum, said ratio drum in contact with a push/pull member of said flexible cable assembly. 9. An apparatus for measuring a fluid in a container comprising: a reservoir sweeper having a first side and a second side, said first side in contact with an expansion space of said container, said second side in contact with said fluid; a push/pull member having a first end and a second end, said first end in contact with said first side; a remote indicator assembly mechanically connected to said second end, said push/pull member capable of translating a linear motion of said reservoir sweeper to a measurement change in said remote indicator assembly; and a seal in contact with said expansion space and a solid cylindrical section of said push/pull member such that said expansion space is separated from a space external to said container. 10. The apparatus of claim 9, further comprising an outer jacket disposed radially outward from said push/pull member. 11. The apparatus of claim 10, wherein said outer jacket comprises a flexible tube. 12. The apparatus of claim 10, wherein said outer jacket comprises a braided metal sleeve with a polymer liner. 13. The apparatus of claim 9, wherein said container comprises an accumulator. 14. The apparatus of claim 13, wherein said accumulator is selected from the group consisting of metal bellows, rolling diaphragm and piston-type. 15. The apparatus of claim 9, wherein said indicator assembly measures a volume of said fluid. 16. The apparatus of claim 9, wherein said remote indicator assembly measures a temperature of said fluid. 17. The apparatus of claim 9, wherein said push/pull member has a solid cylindrical section in contact with a seal, said seal capable of separating an expansion space of said container from a space external to said container. 18. An apparatus for measuring a fluid in an accumulator comprising: a flexible cable assembly having a push/pull member coaxially within an outer jacket, said push/pull member in contact with a reservoir sweeper of said accumulator and further in contact with a remote indicator assembly external of said accumulator, said flexible cable assembly being capable of carrying a linear movement from said reservoir sweeper to said remote indicator assembly; and an external connecting member located on an exterior surface of said accumulator, said external connecting member having a seal, wherein said flexible cable assembly has a solid cylindrical section capable of passing through said seal. 19. The apparatus of claim 18, wherein said accumulator comprises a metal bellows type accumulator. 20. The apparatus of claim 18, wherein said accumulator comprises a gas pressurized accumulator. 21. An apparatus for measuring a fluid in an accumulator comprising: a remote indicator assembly; a push/pull member disposed coaxially within an outer jacket, said push/pull member between and in mechanical communication with said indicator assembly and a fill responsive member of said accumulator, wherein linear movement of said push/pull member varies a readout on the remote indicator assembly; and an external connecting member located on an exterior surface of said accumulator, said external connecting member having a seal, wherein said push/pull member has a solid cylindrical section capable of passing through said seal. 22. The apparatus of claim 21, wherein said outer jacket comprises a material selected from the group consisting of nylon and polytetrafluoroethylene. 23. The apparatus of claim 21, wherein said indicator assembly comprises a pointer in contact with said push/pull member. 24. The apparatus of claim 21, wherein said remote indicator assembly comprises a ratio drum in contact with said push/pull member. 25. The apparatus of claim 21, wherein said remote indicator assembly has a ruled scale calibrated to measure fluid temperature. 26. The apparatus of claim 21, wherein said remote indicator assembly has a ruled scale calibrated to measure fluid volume. 27. An apparatus for measuring a fluid in an accumulator comprising: a stainless steel cable in communication with a reservoir sweeper of said accumulator, said reservoir sweeper capable of providing a linear movement to said stainless steel cable; a flexible tube positioned radially outward from said stainless steel cable, said flexible tube comprising a material selected from the group consisting of nylon and polytetrafluoroethylene; a remote indicator assembly in mechanical communication with said stainless steel cable and capable of receiving said linear movement from the stainless steel cable and providing a measurement of said fluid; and an external connecting member located on an exterior surface of said acculumator, said external connecting member having a seal, wherein said flexible tube has a solid cylindrical section capable of passing through said seal. 28. A method for remotely determining the level of a fluid in a container comprising the steps of: mechanically connecting a first end of a push/pull member with a reservoir sweeper of said container and a second end of said push/pull member with a remote indicator assembly; passing said push/pull member through an external connecting member located on an exterior surface of said container, said external connecting member having a seal, wherein said push/pull member has a solid cylindrical section capable of passing through said seal; translating a linear motion of said reservoir sweeper of said container into a linear motion of said push/pull member; translating said linear motion of the push/pull member into a change in said indicator assembly positioned at a remote location; and translating said change in the remote indicator assembly into a measurement of said fluid. 29. The method of claim 28, further comprising a step of protecting said push/pull member by disposing said push/pull member coaxially within an outer jacket. 30. The method of claim 28, further comprising a step of sealing an exterior of said container from an expansion space inside said container with a seal.