Method and apparatus for servicing a pressurized system

Details Method and apparatus for servicing a pressurized system Method and apparatus for servicing a pressurized system

2006-01-03

2006-01-03

Lee, Kevin (Department: 3753)

Fluid handling

Processes

C137S614000, C137S614110, C251S321000, C251S323000, C251S339000, C062S050700, C062S149000

Reexamination Certificate

active

06981511

ABSTRACT:
A method and apparatus for servicing a pressurized system is described. A purge fitting can be used to vent the pressurized system. Venting can release a gas, such as air, from the system. The pressurized system can be a climate control system (e.g., an air conditioning or refrigeration system), a brake system, a hydraulic system, or a service device for servicing a climate control system. The purge fitting allows air that may be trapped in the pressurized system to be vented by depressing a purge actuator, such as a purge button attached to the fitting. The air can be vented from an opening adjacent to the actuator or other orifice. By purging air directly from the system, the amount of air introduced into the system during servicing can be minimized. The invention also features a coupling member that can be compact in size. The coupling member can include a self-sealing valve assembly that prevents opening the coupling member until a proper coupling interconnection with a system to be serviced has taken place. The purge fitting can be incorporated in the coupling member or other service device.

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