Electricity: measuring and testing – Magnetic – Magnetic sensor within material
Reexamination Certificate
2004-07-12
2008-12-16
Patidar, Jay M (Department: 2862)
Electricity: measuring and testing
Magnetic
Magnetic sensor within material
C324S239000, C324S237000
Reexamination Certificate
active
07466126
ABSTRACT:
An aspect of the invention is directed to a variable sensor head for use in multiple electric machines with varying slot openings comprising a ferromagnetic core; a first adjustable portion and a second adjustable portion positioned in communication with the ferromagnetic core wherein the first adjustable portion and the second adjustable portion are adjusted to fit between a plurality of slot openings of varying widths between a pair of lamination teeth of an electric machine. According to another embodiment, the first and second adjustable portions are sliding portions where the sliding portions may be spring biased to provide a close fit between the pair of lamination teeth. According to another embodiment, the first and second adjustable portions are adjustable screws. According to another embodiment, the first adjustable portion is a plurality of nested steel sheets providing a spring biased tension and the second adjustable portion is in communication with the plurality of nested steel sheets for contacting one of the pair of lamination teeth. According to another embodiment, a ferromagnetic core comprises an adjustable portion including a plurality of corrugated laminations creating a plurality of nested wavy springs.
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patent: 4996486 (1991-02-01), Posedel
patent: 5341095 (1994-08-01), Shelton et al.
patent: 5990688 (1999-11-01), Bourgeois et al.
patent: 6469504 (2002-10-01), Kliman et al.
patent: 6847224 (2005-01-01), Lee et al.
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The European Search Report Dated Jan. 20, 2005 is Enclosed.
Sang Bin Lee, et al, “An Iron Core Probe Based Inter-Laminar Core Fault Detection Technique for Generator Stator Cores”,Proceedings of IEEE PES(Power Engineering Society)General Meeting), vol. 3, pp. 1880-1887, Toronto, ON, Canada, Jul. 2003.
Carl, Jr. Ralph James
Kliman, legal representative Edith
Lee Sang-Bin
Shah Manoj Ramprasad
Agosti Ann M.
General Electric Company
Patidar Jay M
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