IP Library › Patent Application 11151970
Patent Application
App. No. 11/151,970

Alternator rotor core

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Patent No.
US None
App. No.
11/151,970
Abstract

An improved alternator rotor comprising a nonhomogenous steel rotor core, the nonhomogenous steel rotor core comprising a low carbon inner portion and a high carbon outer portion around the low carbon inner portion. An improved alternator rotor comprising a steel rotor core of nonhomogenous hardness, wherein an outer portion of the steel rotor core is harder than an inner portion of the steel rotor core.

Claims (26)

1 . An alternator comprising:

a stator; and

a rotor positioned within said stator, said rotor comprising a nonhomogenous steel rotor core, said nonhomogenous steel rotor core comprising a low carbon steel inner portion and a high carbon steel outer portion around said low carbon steel inner portion.

2 . The alternator of claim 1 , wherein said low carbon steel inner portion comprises a carbon percentage of less than about 0.2%.

3 . The alternator of claim 1 , wherein said high carbon steel outer portion comprises a carbon percentage of between about 0.6% and about 1.0%.

4 . The alternator of claim 1 , wherein said high carbon steel outer portion is hardened.

5 . An alternator comprising:

a stator; and

a rotor positioned within said stator, said rotor comprising a steel rotor core of nonhomogenous hardness, said steel rotor core comprising an inner portion and an outer portion, wherein said outer portion is harder than said inner portion.

6 . The alternator of claim 5 , wherein said steel rotor core comprises a medium carbon steel.

7 . The alternator of claim 5 , wherein said steel rotor core comprises a carbon percentage of between about 0.4% and about 0.5%.

8 . A method for improving the residual magnetism of an alternator rotor core without changing its geometry, the method comprising the steps of:

providing a low carbon steel rotor core; and

adding carbon to a surface of said low carbon steel rotor core.

9 . The method of claim 8 , further comprising the step of:

hardening said surface of said low carbon steel rotor core.

10 . The method of claim 8 , wherein the step of adding carbon to a surface of said low carbon steel rotor core comprises the step of:

carburizing said surface.

11 . The method of claim 10 , wherein the step of adding carbon to a surface of said low carbon steel rotor core comprises, before the step of carburizing said surface, the step of:

masking said surface in areas where additional carbon is not desired.

12 . The method of claim 10 , wherein the step of adding carbon to a surface of said low carbon steel rotor core comprises, after the step of carburizing said surface, the step of:

machining said surface in areas where additional carbon is not desired.

13 . A method for improving the performance of an alternator of the type comprising a stator and a rotor positioned within the stator, the method comprising the step of:

utilizing a nonhomogenous steel rotor core.

14 . The method of claim 13 , wherein said nonhomogenous steel rotor core comprises a low carbon steel inner portion and a high carbon steel outer portion around said low carbon steel inner portion.

15 . The method of claim 13 , wherein said nonhomogenous steel rotor core comprises an inner portion and an outer portion, said outer portion being harder than said inner portion.

Assignments (16)
RELEASE OF SECURITY INTEREST IN INTELLECTUAL PROPERTY (THIRD LIEN) Recorded Jan 4, 2011
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
To: REMY INTERNATIONAL, INC.; WESTERN REMAN INDUSTRIAL, INC.; M & M. KNOPF AUTO PARTS, L.L.C.; POWER INVESTMENTS, INC.; PUBLITECH, INC.; REMAN HOLDINGS, L.L.C.; REMY INC.; REMY ALTERNATORS, INC.; REMY INDIA HOLDINGS, INC.; REMY KOREA HOLDINGS, L.L.C.; REMY REMAN, L.L.C.; REMY SALES, INC.; REMY INTERNATIONAL HOLDINGS, INC.; UNIT PARTS COMPANY; WORLD WIDE AUTOMOTIVE, L.L.C.; REMY TECHNOLOGIES L.L.C.
Reel/Frame 025577/0001 →
RELEASE OF SECURITY INTEREST IN INTELLECTUAL PROPERTY (FIRST LIEN) Recorded Jan 4, 2011
From: BARCLAYS BANK PLC
To: REMY INTERNATIONAL, INC.; WESTERN REMAN INDUSTRIAL, INC.; M & M. KNOPF AUTO PARTS, L.L.C.; POWER INVESTMENTS, INC.; PUBLITECH, INC.; REMAN HOLDINGS, L.L.C.; REMY INC.; REMY ALTERNATORS, INC.; REMY INDIA HOLDINGS, INC.; REMY KOREA HOLDINGS, L.L.C.; REMY REMAN, L.L.C.; REMY SALES, INC.; WESTERN REMAN INDUSTRIAL, L.L.C.; REMY INTERNATIONAL HOLDINGS, INC.; UNIT PARTS COMPANY; WORLD WIDE AUTOMOTIVE, L.L.C.
Reel/Frame 025577/0885 →
RELEASE OF SECURITY INTEREST IN INTELLECTUAL PROPERTY (REVOLVER) Recorded Jan 4, 2011
From: BARCLAYS BANK PLC
To: REMY INTERNATIONAL, INC.; WESTERN REMAN INDUSTRIAL, INC.; M & M. KNOPF AUTO PARTS, L.L.C.; POWER INVESTMENTS, INC.; PUBLITECH, INC.; REMAN HOLDINGS, L.L.C.; REMY INC.; REMY ALTERNATORS, INC.; REMY INDIA HOLDINGS, INC.; REMY KOREA HOLDINGS, L.L.C.; REMY REMAN, L.L.C.; REMY SALES, INC.; WESTERN REMAN INDUSTRIAL, L.L.C.; REMY INTERNATIONAL HOLDINGS, INC.; UNIT PARTS COMPANY; WORLD WIDE AUTOMOTIVE, L.L.C.
Reel/Frame 025578/0009 →
RELEASE OF SUBSIDIARY SECURITY INTEREST IN INTELLECTUAL PROPERTY (REVOLVER) Recorded Jan 3, 2011
From: BARCLAYS BANK PLC
To: REMY TECHNOLOGIES L.L.C.
Reel/Frame 025575/0410 →
RELEASE OF SUBSIDIARY SECURITY INTEREST IN INTELLECTUAL PROPERTY (FIRST LIEN) Recorded Jan 3, 2011
From: BARCLAYS BANK PLC
To: REMY TECHNOLOGIES L.L.C.
Reel/Frame 025575/0494 →
RELEASE OF SUBSIDIARY SECURITY INTEREST IN INTELLECTUAL PROPERTY (SECOND LIEN) Recorded Jan 3, 2011
From: BARCLAYS BANK PLC
To: REMY TECHNOLOGIES L.L.C.
Reel/Frame 025575/0597 →
RELEASE OF SECURITY INTEREST Recorded Jan 11, 2008
From: DEUTSCHE BANK NATIONAL TRUST COMPANY
To: REMY INTERNATIONAL, INC.
Reel/Frame 020353/0212 →
SECURITY AGREEMENT Recorded Dec 21, 2007
From: REMY INTERNATIONAL, INC.; WESTERN REMAN INDUSTRIAL, INC.; M. & M. KNOPF AUTO PARTS, L.L.C.; POWER INVESTMENTS, INC.; PUBLITECH, INC.; REMAN HOLDINGS, L.L.C.; REMY, INC.; REMY ALTERNATORS, INC.; REMY INDIA HOLDINGS, INC.; REMY KOREA HOLDINGS, L.L.C.; REMY SALES, INC.; REMY INTERNATIONAL HOLDINGS, INC.; REMY REMAN, L.L.C.; UNIT PARTS COMPANY; WORLD WIDE AUTOMOTIVE, L.L.C.; REMY TECHNOLOGIES, L.L.C.
To: THE BANK OF NEW YORK TRUST COMPANY, N.A.
Reel/Frame 020540/0381 →
SECURITY AGREEMENT (SECOND LIEN) Recorded Dec 17, 2007
From: REMY TECHNOLOGIES, L.L.C.
To: BARCLAYS BANK PLC, AS ADMINISTRATIVE AGENT
Reel/Frame 020270/0951 →
SECURITY AGREEMENT (FIRST LIEN) Recorded Dec 14, 2007
From: REMY TECHNOLOGIES, L.L.C.
To: BARCLAYS BANK PLC, AS ADMINISTRATIVE AGENT
Reel/Frame 020261/0583 →
SECURITY AGREEMENT (REVOLVER) Recorded Dec 13, 2007
From: REMY TECHNOLOGIES, L.L.C.
To: BARCLAYS BANK PLC, AS ADMINISTRATIVE AGENT
Reel/Frame 020261/0460 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 13, 2007
From: REMY INTERNATIONAL, INC.
To: REMY TECHNOLOGIES, L.L.C.
Reel/Frame 020261/0563 →
RELEASE OF SECURITY INTEREST Recorded Dec 5, 2007
From: WACHOVIA CAPITAL FINANCE CORPORATION (CENTRAL) (FORMERLY KNOW AS CONGRESS FINANCIAL CORPORATION (CENTRAL))
To: REMY INTERNATIONAL, INC.
Reel/Frame 020196/0553 →
SECURITY AGREEMENT (FIRST LIEN) Recorded Oct 31, 2007
From: REMY INTERNATIONAL, INC.
To: BARCLAYS BANK PLC, AS ADMINISTRATIVE AGENT
Reel/Frame 020056/0141 →
SECURITY AGREEMENT (REVOLVER) Recorded Oct 30, 2007
From: REMY INTERNATIONAL, INC.
To: BARCLAYS BANK PLC, AS ADMINISTRATIVE AGENT
Reel/Frame 020064/0206 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 14, 2005
From: FULTON, DAVID A.; YEAGER, KEITH
To: REMY INTERNATIONAL, INC.
Reel/Frame 016693/0092 →