초록 ▼

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 b

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.

대표청구항 ▼

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 b

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. aim 16, wherein the body is attached to a syphon that extends partially within the chamber, the syphon having a distal end proximate to a side wall of the chamber. 18. The gas cylinder of claim 17, wherein the collar is adjustably mounted on the body to selectively allow the collar to be oriented with the distal end of the syphon. 19. A valve for filling or discharging a gas cylinder comprising: a body having a first end, a second end, and an axial bore for providing a passageway for flow of fluid; a spring disposed within the axial bore of the body supported by the second end of the body; a pin disposed within the axial bore of the body, the pin being biased against the spring for movement between a sealed position, arresting flow of fluid through the axial bore, and an open position, allowing flow of fluid through the axial bore of the body; a collar having an outer surface for engaging an external member for accepting or discharging fluid, the collar removably mounted and rotationally fixed on the first end of the body; and a core having an axial bore for receiving the pin and providing a passageway for flow of the fluid, the core being removably received by the body; wherein the core has a head for retaining the collar on the body when the core is received by the body. 20. A method for making a valve for a gas cylinder, comprising: mounting a collar on a body in a rotationally fixed position, the body having an axial bore providing a passageway for flow of fluid; and attaching a core to the body; whereby the collar is maintained between the body and the core when the core is attached to the body. 21. The method of claim 20, further comprising disposing a spring within the axial bore of the body, the spring being supported by the body; and disposing a pin within the axial bore of the body, the spring biasing the pin against the core. 22. The method of claim 21, further comprising mounting the collar on the first end of the body and attaching a chamber to a second end of the body. 23. The method of claim 20, wherein mounting the collar on the body further comprises aligning a plurality of internal grooves on the collar with a mating plurality of splines on the body. 24. The method of claim 20, wherein attaching the core to the body further comprises threadingly mating the core to the body. 25. A method for making a gas cylinder, comprising: attaching a syphon to a body having an axial bore defining an axis, the syphon having a distal end that terminates away from the axis; attaching the body to a chamber, the syphon being inside the chamber; mounting a collar on the body in a rotationally fixed position, the body having an axial bore providing a passageway for flow of fluid; and attaching a core to the body; whereby the collar is maintained between the body and the core when the core is attached to the body. 26. A method for making a gas cylinder, comprising: attaching a syphon to a body having an axial bore defining an axis, the syphon having a distal end that bends away from the axis; attaching the body to a chamber, the syphon being inside the chamber; upon attaching the body to the chamber, providing a chamber mark on the chamber to indicate the direction in which the distal end of the syphon is pointed; fitting the collar securely to an ASA on a paintgun; providing a collar mark on the collar to indicate the upward orientation of the paintgun when the paintgun is in a firing position; detaching the collar from the paintgun; mounting the collar on the body in a rotationally fixed position so that the collar mark is aligned with the chamber mark; and attaching a core to the body; whereby the collar is maintained between the body and the core when the core is attached to the body and the distal end of the syphon is oriented upward when the chamber is attached to the ASA.