IP Library Granted Patent US 6,956,307
Granted Patent B2
US 6,956,307 · App. 10/794,627 · Granted Oct 18, 2005

Soft magnetic composite powder metal cores

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Quick Facts
Patent No.
US 6,956,307
App. No.
10/794,627
Granted
Oct 18, 2005
Kind
B2
Abstract

A stator core assembly for use in an electrical machine is provided. The stator core assembly includes a plurality of core components. Each core component forms an arcuate section of the stator core assembly. Each core component is comprised of at least two core component sections, with each core component section adjacent another core component section. Each core component section is formed of a ferrous magnetic powder metal particles which are generally mutually insulated. Such ferrous magnetic powder metal particles are pressure formed into the core component section.

Claims (8)

1. A stator core assembly for use in an electrical machine,

the stator core assembly comprising a plurality of core components,

each core component having a flux transfer surface, a winding support section extending radially from the flux transfer surface, and a base section into which the winding support section extends,

each core component forming an arcuate section of the stator core assembly,

each core component comprised of a plurality of core component sections, each core component section adjacent another core component section along a circumferential plane of the stator core assembly,

each core component section ferrous magnetic metal powder particles being generally mutually insulated and pressure formed into the core component section,

wherein each core component section is insulated from each adjacent core component section,

and wherein each core winding support section has a generally rounded and smooth outer surface for receiving a core winding therearound.

Assignments (7)
NOTICE OF SUCCESSOR AGENT AND ASSIGNMENT OF SECURITY INTEREST AT REEL/FRAME 027253/0488 Recorded Feb 10, 2025
From: BANK OF AMERICA, N.A., AS THE RESIGNING AGENT
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS SUCCESSOR AGENT
Reel/Frame 070157/0268 →
NOTICE OF SUCCESSOR AGENT AND ASSIGNMENT OF SECURITY INTEREST AT REEL/FRAME 023471/0036 Recorded Feb 10, 2025
From: BANK OF AMERICA, N.A., AS THE RESIGNING AGENT
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS SUCCESSOR AGENT
Reel/Frame 070156/0759 →
INTELLECTUAL PROPERTY SECURITY INTEREST ASSIGNMENT AGREEMENT Recorded Nov 5, 2009
From: CITICORP NORTH AMERICA, INC., AS THE RESIGNING COLLATERAL AGENT (AS SUCCESSOR IN INTEREST OF CITICORP USA, INC.)
To: BANK OF AMERICA, N.A., AS THE SUCCESSOR COLLATERAL AGENT
Reel/Frame 023471/0036 →
AMENDED AND RESTATED INTELLECTUAL PROPERTY SECURITY AGREEMENT DATED APRIL 6, 2006 Recorded Apr 11, 2006
From: AMSTED INDUSTRIES INCORPORATED; AMCONSTRUCT CORPORATION; AMRAIL CORPORATION; AMVEHICLE CORPORATION; ABC RAIL PRODUCTS CHINA INVESTMENT CORPORATION; ASF-KEYSTONE, INC.; ASF-KEYSTONE MEXICO HOLDING CORP.; BALTIMORE AIRCOIL COMPANY, INC.; BRENCO, INCORPORATED; BURGESS-NORTON MFG. CO., INC.; CALERA ACQUISITION CO.; CONSOLIDATED METCO, INC.; DIAMOND CHAIN COMPANY; GRIFFIN PIPE PRODUCTS CO., INC.; GRIFFIN WHEEL COMPANY, INC.; MEANS INDUSTRIES, INC.; MERIDIAN RAIL CHINA INVESTMENT CORP.; TRANSFORM AUTOMOTIVE LLC; UNITED RAIL ANCHOR COMPANY, INC.; VARLEN CORPORATION
To: CITIICORP NORTH AMERICA, INC.
Reel/Frame 017448/0376 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 7, 2005
From: AMSTED INDUSTRIES INCORPORATED
To: BURGESS-NORTON MFG. CO., INC.
Reel/Frame 017065/0580 →
SECURITY AGREEMENT Recorded Oct 5, 2005
From: DIAMOND CHAIN COMPANY, INC.; GRIFFIN WHEEL COMPANY, INC.; GRIFFIN PIPE PRODUCTS CO., INC.; BURGESS-NORTON MFG. CO., INC.
To: CITICORP USA, INC.
Reel/Frame 016621/0069 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 8, 2004
From: ENGQUIST, JOHN; WEGNER, ED
To: AMSTED INDUSTRIES, INC.
Reel/Frame 015058/0317 →