Pumps – Including separate port on noncyclic valve for draining pump...
Reexamination Certificate
2006-08-29
2006-08-29
Kim, Tae Jun (Department: 3746)
Pumps
Including separate port on noncyclic valve for draining pump...
C417S902000, C417S435000, C417S368000
Reexamination Certificate
active
07097435
ABSTRACT:
A method of draining and recharging a hermetic compressor with oil using a drainage assembly mounted in the compressor housing. The assembly includes a tube having a valve mounted at one end thereof with the second end of the tube located in the oil sump of the housing. To drain the compressor oil, refrigerant flowing through the discharge and suction lines is shut off. Refrigerant is purged from the housing to create a vacuum therein and the housing is charged with a gas such as dry air or nitrogen. As the compressor housing is charged with gas, the pressure inside the housing increases, forcing the oil through the drainage assembly and out of the compressor. To recharge the compressor with oil, the gases are purged creating a vacuum in the housing. A predetermined amount of oil is drawn into the housing through a service hose. The compressor is purged and recharged with refrigerant.
REFERENCES:
patent: 2228364 (1941-01-01), Philipp
patent: 3225554 (1965-12-01), Alexander
patent: 3431145 (1969-03-01), Riley
patent: 3443392 (1969-05-01), Alexander
patent: 3507193 (1970-04-01), Jensen
patent: 3564863 (1971-02-01), Sasselli
patent: 4570458 (1986-02-01), Avery, Jr.
patent: 4586875 (1986-05-01), Aman, Jr.
patent: 4698983 (1987-10-01), Hechavarria
patent: 4915245 (1990-04-01), Wouters et al.
patent: 5086630 (1992-02-01), Van Steenburgh, Jr.
patent: 5167126 (1992-12-01), Cartwright
patent: 5184944 (1993-02-01), Scarfone
patent: 5222369 (1993-06-01), Hancock et al.
patent: 5247802 (1993-09-01), Maniez et al.
patent: 5265432 (1993-11-01), Luepke et al.
patent: 5336065 (1994-08-01), Tieken
patent: 5373914 (1994-12-01), Maher
patent: 5427505 (1995-06-01), Payne
patent: 5437162 (1995-08-01), Eden
patent: 5522475 (1996-06-01), Thompson
patent: 5560215 (1996-10-01), Talarico
patent: 5603223 (1997-02-01), Murray et al.
patent: 5638690 (1997-06-01), Berglof
patent: 5678412 (1997-10-01), Byrne et al.
patent: 5685161 (1997-11-01), Peckjian et al.
patent: 6092390 (2000-07-01), Griffith, Jr.
patent: 409310928 (1997-12-01), None
Erisgen Sukru
Rutz James D
Baker & Daniels
Kim Tae Jun
Sayoc Emmanuel
Tecumseh Products Company
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