Refrigeration – Processes – Assembling – charging – or repairing of refrigeration producer
Reexamination Certificate
2007-08-14
2007-08-14
Ali, Mohammad M. (Department: 3744)
Refrigeration
Processes
Assembling, charging, or repairing of refrigeration producer
C062S149000, C062S292000
Reexamination Certificate
active
11113047
ABSTRACT:
A refrigerant charging system and method for charging a refrigeration system with refrigerant includes a refrigerant source, one or more cartridges, an input line, an output line, and a scale preferably having an accuracy within about ±0.2 ounce. The cartridge is filled with refrigerant by transferring the refrigerant from the refrigerant source to the cartridge, after which, the filled cartridge is disconnected from the refrigerant source. An initial weight of the filled cartridge is obtained, and the cartridge is connected to the refrigeration system. Refrigerant is then transferred from the filled cartridge to the refrigeration system. A revised weight of the filled cartridge is obtained, and the revised weight is compared to the initial weight to determine if the refrigeration system has been completely charged. The cartridge is disconnected from the refrigeration system after the refrigeration system has been completely charged.
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Govekar Craig F.
Suharno Anwar
Ali Mohammad M.
McDermott Will & Emery LLP
Snap-On Incorporated
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