Refrigeration – With means preventing or handling atmospheric condensate... – By external heater
Reexamination Certificate
2007-12-18
2007-12-18
Jones, Melvin (Department: 3744)
Refrigeration
With means preventing or handling atmospheric condensate...
By external heater
Reexamination Certificate
active
10490301
ABSTRACT:
A defrosting heater in a refrigerator with a flammable refrigerant sealed therein, including a first glass tube (53) having a heater wire (52) inside thereof, a plug (58) covering both end opening parts of the first glass tube (53) and a second glass tube (54), a lead wire (55) piercing the plug (58) and connected to an end of the heater wire (52), and a positioning plate (57) disposed on a connection part of the lead wire (55) with the heater wire (52). Flame propagation can be prevented by setting the size of a space (58b) formed by the plug (58) and the positioning plate (59) according to the sealing quantity of the flammable refrigerant and the surface temperature of the heater wire (52), and an unstable state in a defrosting mode is prevented even when the flammable refrigerant leaks.
REFERENCES:
patent: 5552581 (1996-09-01), Jasper et al.
patent: 06-147732 (1994-05-01), None
patent: 08-054172 (1996-02-01), None
patent: 10-232082 (1998-09-01), None
patent: 11-257831 (1999-09-01), None
patent: 2001-133127 (2001-05-01), None
English translation of International Search Report for PCT/JP02/06724, dated Oct. 29, 2002.
Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 51025/1989 (Laid-open No. 144385/1990), (Fujitsu General Ltd.), Dec. 7, 1990 and a partial English translation.
Maeda Toshiki
Onishi Ichiro
Takeuchi Kazuyoshi
Yokoe Akira
Jones Melvin
Matsushita Refrigeration Company
RatnerPrestia
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