IP Library Granted Patent US 7,770,955
Granted Patent B2
US 7,770,955 · App. 12/110,741 · Granted Aug 10, 2010

Automotive closure panel assembly

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Quick Facts
Patent No.
US 7,770,955
App. No.
12/110,741
Granted
Aug 10, 2010
Kind
B2
Abstract

An automotive closure panel assembly may include an inner panel and an outer panel. The outer panel may have a flange that protrudes from a body of the outer panel. The outer panel may also have more than one tabs that are each spaced along the flange and that each extend away from the flange. Each of the tabs may be folded over the inner panel during a hemming process.

Claims (27)

1. A product comprising:

an automotive closure panel assembly comprising:

an inner panel; and

an outer panel having a flange protruding from a body of the outer panel, the outer panel also having a plurality of tabs spaced along the flange and extending away from the flange, each of the plurality of tabs being folded over the inner panel during a hemming process, wherein only the plurality of tabs are folded and the flange is not folded during the hemming process.

2. A product as set forth in claim 1 wherein the outer panel is composed of magnesium or a magnesium alloy.

3. A product as set forth in claim 1 further comprising a recess defined between each successive tab of the plurality of tabs, the recesses separating each successive tab.

4. A product as set forth in claim 1 wherein each of the plurality of tabs is a unitary extension of the flange, and the flange is unitary with the body of the outer panel.

5. A product as set forth in claim 1 further comprising a hem line located on each of the plurality of tabs, about which each of the plurality of tabs are folded during the hemming process.

6. A product as set forth in claim 5 further comprising a heat region located adjacent each hem line such that each hem line is heated to an elevated temperature as compared to other portions of each of the plurality of tabs and as compared to other portions of the flange, each hem line being heated before each of the plurality of tabs is folded over the inner panel during the hemming process.

7. A product as set forth in claim 1 wherein, when hemmed, an inboard surface of each of the plurality of tabs contacts an outer surface of the inner panel to define an attachment area thereat about which the plurality of tabs and the inner panel are joined.

8. A product comprising:

an outer panel of an automotive closure panel assembly, the outer panel having a flange protruding from a body of the outer panel, the outer panel also having a plurality of tabs spaced along the flange of the outer panel and extending away from the flange, each of the plurality of tabs being folded over an inner panel of the automotive closure panel assembly during a hemming process, wherein only the plurality of tabs are folded and the flange is not folded during the hemming process.

9. A product as set forth in claim 8 further comprising a flange protruding from a body of the outer panel, wherein the plurality of tabs extend away from the flange.

10. A product as set forth in claim 8 wherein the outer panel is composed of magnesium or a magnesium alloy.

11. A product as set forth in claim 8 further comprising a recess defined between each successive tab of the plurality of tabs, the recesses separating each successive tab.

12. A product as set forth in claim 8 wherein each of the plurality of tabs is a unitary extension of a body of the outer panel.

13. A product as set forth in claim 9 further comprising a hem line located on each of the plurality of tabs, about which each of the plurality of tabs are folded during the hemming process.

14. A product as set forth in claim 13 further comprising a heat region located adjacent each hem line such that each hem line is heated to an elevated temperature as compared to other portions of each of the plurality of tabs and as compared to other portions of the flange, each hem line being heated before each of the plurality of tabs is folded during the hemming process.

15. A method of making a product, the method comprising:

providing an inner panel and an outer panel of an automotive closure panel assembly, the outer panel being composed of magnesium or a magnesium alloy, the outer panel having a flange protruding from a body of the outer panel, the outer panel also having a plurality of tabs spaced along the flange and extending away from the flange;

folding each of the plurality of tabs over the inner panel; and

heating a hem line that is located on each of the plurality of tabs before the folding of each of the plurality of tabs.

16. A method as set forth in claim 15 wherein folding further comprises only folding each of the plurality of tabs, whereby the flange remains unfolded.

17. A method of making a product, the method comprising:

providing an inner panel and an outer panel of an automotive closure panel assembly, the outer panel being composed of magnesium or a magnesium alloy, the outer panel having a plurality of tabs extending away from a body of the outer panel;

folding each of the plurality of tabs over the inner panel; and

heating a hem line that is located on each of the plurality of tabs before the folding of each of the plurality of tabs.

Assignments (12)
RELEASE OF SECURITY INTEREST Recorded Nov 7, 2014
From: WILMINGTON TRUST COMPANY
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 034384/0758 →
CHANGE OF NAME Recorded Feb 10, 2011
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 025781/0211 →
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 4, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 022201/0448 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2008
From: KLEBER, RICHARD M.; CARSLEY, JOHN E.; PELOWSKI, GARY R.
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 021274/0923 →