Inductor devices – With temperature modifier
Reexamination Certificate
2006-05-23
2006-05-23
Chau, Minh (Department: 2854)
Inductor devices
With temperature modifier
C336S057000, C336S058000
Reexamination Certificate
active
07049922
ABSTRACT:
The invention deals with increasing the quality of insulating mineral oil in transformers, by providing an isolating layer of flowing nitrogen over the oil's surface to keep ambient air from combining or absorbing with or in the oil, also providing a kidney or filter to remove undesirable contaminants such as water, oxygen, free radicals and debris from the oil, and providing a means of sensing trace gases produced in the oil responsive to transformer conditions and mixed with nitrogen flow to diagnose transformer conditions of interest such as hot-spots, short circuits, insulation failure or similar indicators of failure or incipient failure or need for service, the trace gas analysis being capable of remote monitoring and interpretation. The invention has application in the field of transformers where it is useful to provide self-sufficient and environmentally equipment and methods to prolong service life and reliability between service or inspection of medium, high, and extra-high voltage power.
REFERENCES:
patent: 4069165 (1978-01-01), Masunaga et al.
patent: 4112737 (1978-09-01), Morgan
patent: 4144162 (1979-03-01), Edgar et al.
patent: 4379746 (1983-04-01), Norman et al.
patent: 4425949 (1984-01-01), Rowe, Jr.
patent: 4498992 (1985-02-01), Garrett, Jr.
patent: 4806276 (1989-02-01), Maier
patent: 5314613 (1994-05-01), Russo
patent: 5900538 (1999-05-01), Bastian
patent: 5942121 (1999-08-01), Pantich
patent: 5976226 (1999-11-01), Bastian et al.
patent: 6193786 (2001-02-01), Henderson
patent: 2001/0044154 (2001-11-01), Evans
patent: 2003/0164479 (2003-09-01), Goedde et al.
patent: 1082774 (1980-07-01), None
patent: 1227026 (1987-09-01), None
patent: 2014619 (1990-10-01), None
patent: 2054616 (1993-05-01), None
patent: 2143580 (1995-08-01), None
patent: 2067103 (1999-12-01), None
patent: 0494186 (1995-08-01), None
patent: 0 750 322 (1997-01-01), None
patent: 358000221 (1983-01-01), None
patent: 1051593 (1983-10-01), None
patent: WO 98/36265 (1998-08-01), None
patent: WO 99/33788 (1999-07-01), None
Report for the Canadian Electrical Association entitled “Oil Preservation Systems for Power Transformers Fitted with Conservators” prepared by Ontario Hydro, Dec. 1986, 11 pp.
Chau Minh
Insoil Canada Ltd.
MacPherson Kwok & Chen & Heid LLP
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