IP Library › Granted Patent US 8,313,627
Granted Patent B2
US 8,313,627 · App. 12/018,877 · Granted Nov 20, 2012

Drag through electro-deposition system

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Quick Facts
Patent No.
US 8,313,627
App. No.
12/018,877
Granted
Nov 20, 2012
Kind
B2
Abstract

A drag through electro-deposition system and a method of performing a drag through electro-deposition process on a vehicle body is disclosed. The system may include pairs of anodes, with each pair having a corresponding anode pair power supply. As a vehicle body is carried through the electro-deposition tank, the electric power to each pair is individually adjusted relative to the vehicle body position in the tank.

Claims (10)

1. A method of performing a drag through electro-deposition process on a vehicle body, the method comprising the steps of:

(a) moving the vehicle body through a drag through electro-deposition tank;

(b) determining a current location of the vehicle body in the drag through electro-deposition tank;

(c) determining a first non-zero electrical power to be applied to a first pair of anodes located in the drag through electro-deposition tank for the current location of the vehicle body in the drag though electro-deposition tank;

(d) applying the determined first electrical power for the first pair of anodes via a first anode pair power supply;

(e) determining a second non-zero electrical power to be applied to a second pair of anodes located in the drag through electro-deposition tank for the current location of the vehicle body in the drag though electro-deposition tank, the second electrical power being different from the first electrical power;

(f) applying the determined second electrical power for the second pair of anodes via a second anode pair power supply;

(g) determining an n th non-zero electrical power to be applied to an n th pair of anodes located in the drag through electro-deposition tank for the current location of the vehicle body in the drag though electro-deposition tank, the n th electrical power being different from the first and second electrical power;

(h) applying the determined n th electrical power for the n th pair of anodes via an n th anode pair power supply; and

(e) repeating steps (b)-(h) until the drag through electro-deposition process is complete.

Assignments (12)
RELEASE OF SECURITY INTEREST Recorded Nov 7, 2014
From: WILMINGTON TRUST COMPANY
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 034185/0587 →
CHANGE OF NAME Recorded Feb 10, 2011
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 025781/0035 →
SECURITY AGREEMENT Recorded Nov 8, 2010
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: WILMINGTON TRUST COMPANY
Reel/Frame 025324/0475 →
RELEASE OF SECURITY INTEREST Recorded Nov 5, 2010
From: UAW RETIREE MEDICAL BENEFITS TRUST
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025315/0001 →
RELEASE OF SECURITY INTEREST Recorded Nov 4, 2010
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025245/0780 →
SECURITY AGREEMENT Recorded Aug 28, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UAW RETIREE MEDICAL BENEFITS TRUST
Reel/Frame 023162/0187 →
SECURITY AGREEMENT Recorded Aug 27, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 023156/0215 →
RELEASE OF SECURITY INTEREST Recorded Aug 21, 2009
From: CITICORP USA, INC. AS AGENT FOR BANK PRIORITY SECURED PARTIES; CITICORP USA, INC. AS AGENT FOR HEDGE PRIORITY SECURED PARTIES
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 023155/0880 →
RELEASE OF SECURITY INTEREST Recorded Aug 20, 2009
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 023124/0670 →
SECURITY AGREEMENT Recorded Apr 16, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: CITICORP USA, INC. AS AGENT FOR BANK PRIORITY SECURED PARTIES; CITICORP USA, INC. AS AGENT FOR HEDGE PRIORITY SECURED PARTIES
Reel/Frame 022554/0479 →
SECURITY AGREEMENT Recorded Feb 3, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 022195/0334 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 24, 2008
From: GERHARZ, RAINER; WIEDMAIER, RUSSELL A.
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 020406/0554 →