Coupling for servicing a pressurized system
First Claim
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1. A service device comprising:
- a body having a first end engagable with a service port, a second end engagable with a service unit, and an inner surface defining an interior chamber;
a valve opening member disposed in the interior chamber, the valve opening member including a plug engaging end proximate to the first end, the plug engaging end being capable of changing position relative to the first end;
a spring within the body biasing the valve opening member toward the first end; and
a service port opening member configured to rotate the valve opening member relative to the body, the first end and the second end being in fluid communication when a service port is engaged with the first end and the service port is opened.
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Abstract
A service device connects to a service port of a pressurized system. The device includes a valve opening member for opening a valve within the port. The device can attach to a service unit for servicing the pressurized system. The system can be an air conditioning or refrigeration system.
49 Citations
27 Claims
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1. A service device comprising:
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a body having a first end engagable with a service port, a second end engagable with a service unit, and an inner surface defining an interior chamber;
a valve opening member disposed in the interior chamber, the valve opening member including a plug engaging end proximate to the first end, the plug engaging end being capable of changing position relative to the first end;
a spring within the body biasing the valve opening member toward the first end; and
a service port opening member configured to rotate the valve opening member relative to the body, the first end and the second end being in fluid communication when a service port is engaged with the first end and the service port is opened. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 25, 26, 27)
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9. The coupling member comprising:
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a body having a first end engagable with a service port, a second end engagable with a service unit, and an inner surface defining an interior chamber;
a valve opening member disposed in the interior chamber;
a valve member within the body having a first position oriented closer to the first end relative to a second position;
a spring within the body biasing the valve opening member toward the first end; and
a service port opening member configured to rotate the valve opening member relative to the body, the valve member moving from the first position to the second position and the first end and second end being in fluid communication when the service port is engaged with the first end of the body and the service port is opened. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An air conditioning or refrigeration service device comprising:
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a service unit including a coupling member comprising;
a body having a first end engagable with a service port, a second end engagable with a service unit, and an inner surface defining an interior chamber;
a valve opening member disposed in the interior chamber;
a valve member within the body having a first position oriented closer to the first end relative to a second position;
a spring within the body biasing the valve opening member toward the first end; and
a service port opening member configured to rotate the valve opening member relative to the body, the valve member moving from the first position to the second position and the first end and second end being in fluid communication when the service port is engaged with the first end of the body and the service port is opened. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method of opening a service port comprising:
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adjusting a position of a valve opening member relative to a first end of a service port connector, the valve opening member including a plug engaging end proximate to the first end and being biased by a spring towards the first end, the service port connector being attached to a service unit or being capable of attaching to a service unit and the first end being engagable with the service port; and
opening a valve within the service port, wherein the valve opening member rotates relative to the body to open the valve. - View Dependent Claims (22, 23, 24)
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Specification