Valve assembly for machine fluid operations
AssigneeRpm Industries, LLC
InventorJohn K. Apostolides
Life of this patent
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Abstract
A system. The system includes a valve assembly. The valve assembly includes a first port, a second port fluidically couplable with the first port upon application of negative pressure at the first port, a third port fluidically couplable with the first port upon application of positive pressure at the first port, and a first check valve positioned between the first port and the second port. The system also includes a second check valve fluidically couplable with the third port upon the application of the positive pressure at the first port. The second check valve is positioned external to the valve assembly.
Claims20
A system, comprising:
- a valve assembly, wherein the valve assembly comprises:
- a first port;
- a second port fluidically couplable with the first port upon application of negative pressure at the first port;
- a third port fluidically couplable with the first port upon application of positive pressure at the first port;
- and
- a first check valve positioned between the first port and the second port;
- and
- a second check valve fluidically couplable with the third port upon the application of the positive pressure at the first port, wherein the second check valve is positioned external to the valve assembly.
A system, comprising:
- a first valve assembly comprising:
- a first port;
- a second port fluidically couplable with the first port upon application of a first negative pressure at the first port;
- a third port fluidically couplable with the first port upon application of a first positive pressure at the first port;
- and
- a first check valve positioned between the first port and the second port;
- a second valve assembly comprising:
- a fourth port;
- a fifth port fluidically couplable with the fourth port upon application of a second negative pressure at the fourth port;
- a sixth port fluidically couplable with the fourth port upon application of a second positive pressure at the fourth port;
- and
- a second check valve positioned between the fourth port and the fifth port;
- a third check valve fluidically couplable with the third port upon the application of the first positive pressure at the first port, wherein the third check valve is positioned external to the first and second valve assemblies;
- and
- a fourth check valve fluidically couplable with the sixth port upon the application of the positive pressure at the fourth port, wherein the fourth check valve is positioned external to the first and second valve assemblies.
A system, comprising:
- a check valve fluidically coupled with and positioned proximate a fluid system of a machine;
- and
- a valve assembly fluidically coupled with the check valve, wherein the valve assembly is external to the check valve and comprises means for performing:
- a fluid evacuation operation on the machine upon application of negative pressure to the valve assembly;
- and
- a fluid refill operation on the machine upon application of a positive pressure to the valve assembly.
Dependencies are inferred from the claim text.