IP Library Granted Patent US 7,686,383
Granted Patent B2
US 7,686,383 · App. 12/199,106 · Granted Mar 30, 2010

Retractable curved air dam

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Quick Facts
Patent No.
US 7,686,383
App. No.
12/199,106
Granted
Mar 30, 2010
Kind
B2
Abstract

A retractable curved air dam assembly is provided for improving the aerodynamic characteristics of a motor vehicle. The air dam assembly is segmented to include a plurality of panel members each adapted to pivotably attach to the underside of the front-end vehicle structure. The panel members are configured to selectively transition between a deployed position, in which the panel members are preferably in a generally vertical orientation, and a stowed position, in which the panel members are in a generally horizontal orientation. The panel members are shingled (i.e., partially overlapped) such that pivoting a center panel from the deployed position to the stowed position thereby pivots the side panels to the stowed position, and such that pivoting a side panel from the stowed position to the deployed position thereby pivots the center panels to the deployed position.

Claims (29)

1. An air dam assembly for improving the aerodynamic characteristics of a motor vehicle having front vehicle structure, the air dam assembly comprising:

a plurality of panel members configured to pivotably attach to the front vehicle structure in curvilinear relation to one another and to selectively transition between a first position, in which said plurality of panel members are in a deployed state, and a second position, in which said plurality of panel members are in a stowed state; and

wherein said plurality of panel members includes first and second panel members at least partially overlapping one another such that transition of said first panel member from said first position to said second position thereby transitions said second panel member to said second position.

2. The air dam assembly of claim 1 , wherein said plurality of panel members includes first and second panel members at least partially overlapping one another such that transition of said second panel member from said second position to said first position thereby transitions said first panel member to said first position.

3. The air dam assembly of claim 1 , wherein said plurality of panel members includes a center panel member extending transversely underneath the front vehicle structure, and at least two side panel members with at least a portion of respective forward surfaces of said at least two side panel members overlapping a rearward surface of said center panel member on laterally opposing sides thereof.

4. The air dam assembly of claim 1 , wherein said first position is a generally vertical orientation.

5. The air dam assembly of claim 1 , wherein said second position is a generally horizontal orientation.

6. The air dam assembly of claim 1 , wherein said plurality of panel members pivot in a generally rearward direction with respect to the vehicle.

7. The air dam assembly of claim 1 , wherein said plurality of panel members is pivoted into said first position by an actuator, and biased into said second position by a biasing member.

8. The air dam assembly of claim 1 , wherein each of said plurality of panel members pivots about a respective unique axis.

9. The air dam assembly of claim 1 , wherein said plurality of panel members is characterized by a lack of a direct coupling to one another.

10. An air dam assembly for improving the aerodynamic characteristics of a motor vehicle having front and rear vehicle structure, the air dam assembly comprising:

a center panel member configured to suspend transversely from underneath the front vehicle structure and selectively pivot between a first deployed position, in which said center panel member is in a non-horizontal orientation, and a first stowed position, in which said center panel member is in a generally horizontal orientation; and

at least one side panel member configured to suspend from underneath the front vehicle structure in curvilinear relation to said center panel member and selectively pivot between a second deployed position, in which said at least one side panel member is in a non-horizontal orientation, and a second stowed position, in which said at least one side panel member is in a generally horizontal orientation;

wherein said center and at least one side panel members sufficiently overlap such that pivoting said center panel member from said first deployed position to said first stowed position thereby pivots said at least one side panel member to said second stowed position; and

wherein said center and at least one side panel members sufficiently overlap such that pivoting said at least one side panel member from said second stowed position to said second deployed position thereby pivots said center panel member to said first deployed position.

11. The air dam assembly of claim 10 , wherein said at least one side panel member includes at least two side panel members, wherein at least a portion of respective forward surfaces of said at least two side panel members press against a rearward surface of said center panel member on laterally opposing sides thereof.

12. The air dam assembly of claim 10 , wherein said at least one side panel member includes first, second, third and fourth side panel members, wherein respective forward surfaces of said first and second side panel members press against a rearward surface of said center panel member on laterally opposing sides thereof, wherein a forward surface of said third side panel member presses against a rearward surface of said first side panel member, and wherein a forward surface of said fourth side panel member presses against a rearward surface of said second side panel member.

13. The air dam assembly of claim 10 , wherein said center and at least one side panel members pivot in a generally rearward direction with respect to the vehicle.

14. The air dam assembly of claim 13 , wherein said center panel member pivots about a first axis, and said at least one side panel member pivots about a second axis different from said first axis.

15. The air dam assembly of claim 10 , wherein said first and second deployed positions are of a generally vertical orientation.

16. The air dam assembly of claim 10 , wherein said center and at least one side panel members are characterized by a lack of a direct coupling to each other.

17. The air dam assembly of claim 10 , wherein said center panel member is pivoted into said first deployed position by an actuator, and said at least one side panel member is biased into said second stowed position by a biasing member.

18. A motorized vehicle having a vehicle body with front vehicle structure in opposing forward relation to rear vehicle structure, the front vehicle structure having a front fascia mounted thereto, the motor vehicle comprising:

an air dam assembly suspended from an underside of the front vehicle structure proximate to the front fascia, said air dam assembly having a curved configuration in the plan view with respect to the vehicle, the air dam assembly including:

a center panel member extending generally transversely across the front vehicle structure and configured to selectively pivot between a first deployed position, in which said center panel member is in a non-horizontal orientation, and a first stowed position, in which said center panel member is in a substantially horizontal orientation; and

first, second, third and fourth side panel members with respective forward surfaces of said first and second side panel members pressing against a rearward surface of said center panel member on laterally opposing sides thereof, a forward surface of said third side panel member pressing against a rearward surface of said first side panel member, and a forward surface of said fourth side panel member pressing against a rearward surface of said second side panel member, said side panel members configured to selectively pivot between a second deployed position, in which said side panel members are in a non-horizontal orientation, and a second stowed position, in which said side panel members are in a substantially horizontal orientation;

wherein pivoting said center panel member from said first deployed position to said first stowed position thereby pivots said side panel members to said second stowed position; and

wherein pivoting said third and fourth side panel members from said second stowed position to said second deployed position thereby pivots said center panel member and said first and second side panel members to respective ones of said first and second deployed position.

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 025315/0046 →
RELEASE OF SECURITY INTEREST Recorded Nov 4, 2010
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025245/0909 →
SECURITY AGREEMENT Recorded Aug 28, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UAW RETIREE MEDICAL BENEFITS TRUST
Reel/Frame 023162/0237 →
SECURITY AGREEMENT Recorded Aug 27, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 023156/0313 →
RELEASE OF SECURITY INTEREST Recorded Aug 21, 2009
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 023126/0914 →
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 023155/0769 →
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 022554/0538 →
SECURITY AGREEMENT Recorded Feb 3, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 022201/0363 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 28, 2008
From: TORTOSA-BOONACKER, NINA
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 021455/0395 →