Inductor devices – With outer casing or housing – Potted type
Patent
1996-05-08
1998-07-07
Kozma, Thomas J.
Inductor devices
With outer casing or housing
Potted type
336210, 336217, H01F 2724, H01F 2726
Patent
active
057775370
ABSTRACT:
A quiet transformer includes a laminated core having each laminate formed as a flat layer from highly grain oriented silicon steel which is fabricated by laser cutting techniques with each layer including five segments in intimate contact with each other via mitered butt lap joints having increased length and asymmetrical angles at opposite ends for reducing the reluctance of the gaps between adjacent lamination segments. The center segment has V joints of different angles on opposite ends. Clamping holes formed in the element of said lamination having the largest cross section at the location in the segment away from said gaps to prevent magnetic flux crowding and increased local flux density. Indexing pins on opposite faces of the segments close and lock in the gaps of the core with each layer being 100% interleaved for producing low joint reluctance and to minimize magnetostrictive forces. The core is pressurized by clamping brackets and bolts connected to opposite ends of the core. Leaf springs are connected between the brackets and the laminations for applying pressure to portions of the laminations.
REFERENCES:
patent: 1406245 (1922-07-01), Thordarson
patent: 1713697 (1929-05-01), Granger
patent: 3007124 (1961-10-01), Robinson
patent: 3102246 (1963-08-01), Honey et al.
patent: 3125735 (1964-03-01), Twomey
patent: 3316515 (1967-04-01), Bock et al.
patent: 3683303 (1972-08-01), Ayano et al.
patent: 3743991 (1973-07-01), Gumpper et al.
patent: 3815067 (1974-06-01), Koh
patent: 3895336 (1975-07-01), Pitman
patent: 4047138 (1977-09-01), Steigerwald
patent: 4055826 (1977-10-01), Franz
patent: 4325096 (1982-04-01), Sunohara et al.
patent: 4724413 (1988-02-01), Kataoka
"Transformer Core Constructions", K.C. Lin et al., Westinghouse ABB Power T & D Company, pp. 163-168, Intern'L Coil Winding Assoc., Inc., (Sep. 25-28, 1989).
Allen George M.
O'Connor Harold F.
Saslow Seymour
Espey Mfg. & Electronics Corp.
Kozma Thomas J.
LandOfFree
Quiet magnetic structures such as power transformers and reactor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Quiet magnetic structures such as power transformers and reactor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quiet magnetic structures such as power transformers and reactor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1210355