Electric heating – Inductive heating – Metal working
Reexamination Certificate
2007-03-30
2010-06-22
Robinson, Daniel (Department: 3742)
Electric heating
Inductive heating
Metal working
Reexamination Certificate
active
07741587
ABSTRACT:
A method of forming a brazed joint between an armature bar and a hydraulic header clip including: assembling free ends of hollow strands and of solid strands of the armature winding bar and positioning the assembly within the hydraulic header clip; interleaving a silver based braze alloy between the strands, wherein a portion of the braze alloy extends axially beyond the free ends of a plurality of the solid strands and the free ends of a plurality of the hollow strands extend axially beyond the braze material; positioning the assembly of the free ends, hydraulic header clip and the braze alloy in a braze chamber, such that the clip is seated in an induction heating coil of the chamber; heating the assembly to a first temperature below a solidus temperature of the braze alloy and within a 200 degrees Fahrenheit of the solidus temperature activating the induction heat coil to heat the clip; heating the assembly to a second temperature above the liquidus temperature of the braze alloy; pooling liquid braze alloy on ends of the armature bar, and cooling the assembly and clip thereby forming a braze isolation layer on the end of the armature bar.
REFERENCES:
patent: 2455560 (1948-12-01), Cobb et al.
patent: 2484333 (1949-10-01), Cobb et al.
patent: 2557745 (1951-06-01), Huntley et al.
patent: 2660682 (1953-11-01), Clokey et al.
patent: 2791667 (1957-05-01), Clark et al.
patent: 3693036 (1972-09-01), Schmitt
patent: 4066203 (1978-01-01), Davies
patent: 4199700 (1980-04-01), Daugherty et al.
patent: 4380362 (1983-04-01), Swensrud et al.
patent: 4385254 (1983-05-01), Vakser et al.
patent: 4894575 (1990-01-01), Nilsson et al.
patent: 5581869 (1996-12-01), Travaly
patent: 5605590 (1997-02-01), Manning et al.
patent: 5616040 (1997-04-01), Taillon et al.
patent: 5717267 (1998-02-01), Paroz
patent: 5760371 (1998-06-01), Dailey et al.
patent: 5791924 (1998-08-01), Taillon et al.
patent: 5796189 (1998-08-01), Manning et al.
patent: 5809632 (1998-09-01), Champagne et al.
patent: 5875539 (1999-03-01), Kilpatrick et al.
patent: 6577038 (2003-06-01), Butman et al.
patent: 7199338 (2007-04-01), Breznak et al.
patent: 2002/0079773 (2002-06-01), Butman et al.
patent: 2005/0247762 (2005-11-01), Breznak et al.
patent: 2006/0108356 (2006-05-01), Hopeck et al.
patent: 2006/0108401 (2006-05-01), Breznak et al.
patent: 0 899 448 (1999-03-01), None
Breznak et al, U.S. Appl. No. 10/841,964, filed May 10, 2004.
European Search Report completed Feb. 13, 2007.
Breznak Jeffrey Michael
Hopeck James Fredrick
Iversen Alan Michael
Sowers Lawrence Lee
General Electric Company
Nixon & Vanderhye P.C.
Robinson Daniel
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