IP Library Granted Patent US 10,981,429
Granted Patent B2
US 10,981,429 · App. 16/144,875 · Granted Apr 20, 2021

Electronically controlled sway bar damping link

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Quick Facts
Patent No.
US 10,981,429
App. No.
16/144,875
Granted
Apr 20, 2021
Kind
B2
Abstract

A sway bar system is described. The sway bar system includes a sway bar having a first end and a second end. The sway bar system further includes a first electronically controlled damper link which is coupled to the first end of the sway bar. The first electronically controlled damper link is configured to be coupled a first location of a vehicle. The sway bar system also has a second link which is coupled to the second end of the sway bar. The second link is configured to be coupled a second location of the vehicle.

Claims (90)

1. A sway bar system comprising:

a sway bar having a first end and a second end, said second end distal from said first end;

a first link coupled to said first end of said sway bar and said first link configured to be coupled to a first location of a vehicle, said first link electronically controlled, said first link comprising:

a damper cylinder, said damper cylinder having a damper cylinder volume;

a damping piston axially moveable within said damper cylinder;

a shaft fixedly coupled to said damping piston;

a fluid reserve cylinder, said fluid reserve cylinder comprising:

a fluid reservoir chamber;

a gas chamber; and

an internal floating piston fluidly separating said fluid reservoir chamber and said gas chamber; and

a valve fluidly coupled to said damper cylinder and said fluid reserve cylinder, said valve having a flow area wherein a ratio of said damper cylinder volume to said flow area of said valve is adjustable, said first link having operational damping characteristics which are electronically controlled; and

a second link coupled to said second end of said sway bar and said second link configured to be coupled to a second location of said vehicle.

2. The sway bar system of claim 1 , wherein said flow area of said valve controls an amount of fluid flow between said damper cylinder and said fluid reservoir chamber via said valve.

3. The sway bar system of claim 1 wherein said valve is an electronic valve.

4. The sway bar system of claim 1 wherein said first link is configured to be coupled to said vehicle proximate a wheel of said vehicle.

5. The sway bar system of claim 1 wherein said first link is configured to be coupled to said vehicle proximate an axle of said vehicle.

6. The sway bar system of claim 1 wherein said first link is configured to be coupled to said vehicle proximate a suspension component of said vehicle.

7. The sway bar system of claim 1 wherein said second link is electronically controlled.

8. The sway bar system of claim 7 wherein said second link comprises:

a damper cylinder, said damper cylinder having a damper cylinder volume;

a damping piston axially moveable within said damper cylinder;

a shaft fixedly coupled to said damping piston;

a fluid reserve cylinder, said fluid reserve cylinder comprising:

a fluid reservoir chamber;

a gas chamber; and

an internal floating piston fluidly separating said fluid reservoir chamber and said gas chamber; and

a valve fluidly coupled to said damper cylinder and said fluid reserve cylinder, said valve having a flow area wherein a ratio of said damper cylinder volume to said flow area of said valve is adjustable.

9. The sway bar system of claim 8 wherein said second link is configured to be coupled to said vehicle proximate a wheel of said vehicle.

10. The sway bar system of claim 8 wherein said second link is configured to be coupled to said vehicle proximate an axle of said vehicle.

11. The sway bar system of claim 8 wherein said second link is configured to be coupled to said vehicle proximate a suspension component of said vehicle.

12. A sway bar system comprising:

a sway bar having a first end and a second end, said second end distal from said first end;

a first electronically controlled damper link coupled to said first end of said sway bar and said first electronically controlled damper link configured to be coupled to a first location of a vehicle, said first electronically controlled damper link having operational damping characteristics which are electronically adjustable; and

a second link coupled to said second end of said sway bar and said second link configured to be coupled to a second location of said vehicle.

13. The sway bar system of claim 12 wherein said first electronically controlled damper link comprises:

a damper cylinder, said damper cylinder having a damper cylinder volume;

a damping piston axially moveable within said damper cylinder;

a shaft fixedly coupled to said damping piston;

a fluid reserve cylinder, said fluid reserve cylinder comprising:

a fluid reservoir chamber;

a gas chamber; and

an internal floating piston fluidly separating said fluid reservoir chamber and said gas chamber; and

a valve fluidly coupled to said damper cylinder and said fluid reserve cylinder, said valve having a flow area wherein a ratio of said damper cylinder volume to said flow area of said valve is adjustable.

14. The sway bar system of claim 13 , wherein said flow area of said valve controls an amount of fluid flow between said damper cylinder and said fluid reservoir chamber via said valve.

15. The sway bar system of claim 13 wherein said valve is an electronic valve.

16. The sway bar system of claim 13 wherein said second electronically controlled damper link comprises:

a damper cylinder, said damper cylinder having a damper cylinder volume;

a damping piston axially moveable within said damper cylinder;

a shaft fixedly coupled to said damping piston;

a fluid reserve cylinder, said fluid reserve cylinder comprising:

a fluid reservoir chamber;

a gas chamber; and

an internal floating piston fluidly separating said fluid reservoir chamber and said gas chamber; and

a valve fluidly coupled to said damper cylinder and said fluid reserve cylinder, said valve having a flow area wherein a ratio of said damper cylinder volume to said flow area of said valve is adjustable.

17. The sway bar system of claim 16 , wherein said flow area of said valve of said second electronically controlled damper link controls an amount of fluid flow between said damper cylinder of said second electronically controlled damper link and said fluid reservoir chamber of said second electronically controlled damper link via said valve of said second electronically controlled damper link.

18. The sway bar system of claim 16 wherein said valve of said second electronically controlled damper link is an electronic valve.

19. The sway bar system of claim 12 wherein said first electronically controlled damper link is configured to be coupled to said vehicle proximate a wheel of said vehicle.

20. The sway bar system of claim 12 wherein said first electronically controlled damper link is configured to be coupled to said vehicle proximate an axle of said vehicle.

21. The sway bar system of claim 12 wherein said first electronically controlled damper link is configured to be coupled to said vehicle proximate a suspension component of said vehicle.

22. The sway bar system of claim 12 wherein said second link comprises:

a second electronically controlled damper link.

23. The sway bar system of claim 22 wherein said second electronically controlled damper link is configured to be coupled to said vehicle proximate a wheel of said vehicle.

24. The sway bar system of claim 22 wherein said second electronically controlled damper link is configured to be coupled to said vehicle proximate an axle of said vehicle.

25. The sway bar system of claim 22 wherein said second electronically controlled damper link is configured to be coupled to said vehicle proximate a suspension component of said vehicle.

26. A sway bar system comprising:

a sway bar having a first end and a second end, said second end distal from said first end;

a first electronically controlled damper link coupled to said first end of said sway bar and said first electronically controlled damper link configured to be coupled to a first location of a vehicle, wherein said first electronically controlled damper link comprises:

a damper cylinder, said damper cylinder having a damper cylinder volume;

a damping piston axially moveable within said damper cylinder;

a shaft fixedly coupled to said damping piston;

a fluid reserve cylinder, said fluid reserve cylinder comprising:

a fluid reservoir chamber;

a gas chamber; and

an internal floating piston fluidly separating said fluid reservoir chamber and said gas chamber; and

a valve fluidly coupled to said damper cylinder and said fluid reserve cylinder, said valve having a flow area wherein a ratio of said damper cylinder volume to said flow area of said valve is adjustable, said first electronically controlled damper link having operational damping characteristics which are electronically adjustable; and

a second electronically controlled damper link coupled to said second end of said sway bar and said second electronically controlled damper link configured to be coupled to a second location of said vehicle.

27. The sway bar system of claim 26 wherein said second electronically controlled damper link comprises:

a damper cylinder, said damper cylinder having a damper cylinder volume;

a damping piston axially moveable within said damper cylinder;

a shaft fixedly coupled to said damping piston;

a fluid reserve cylinder, said fluid reserve cylinder comprising:

a fluid reservoir chamber;

a gas chamber; and

an internal floating piston fluidly separating said fluid reservoir chamber and said gas chamber; and

a valve fluidly coupled to said damper cylinder and said fluid reserve cylinder, said valve having a flow area wherein a ratio of said damper cylinder volume to said flow area of said valve is adjustable.

28. A vehicle and sway bar system comprising:

a vehicle;

a sway bar having a first end and a second end, said second end distal from said first end;

a first electronically controlled damper link coupled to said first end of said sway bar and said first electronically controlled damper link coupled to a first location of said vehicle, said first electronically controlled damper link having operational damping characteristics which are electronically adjustable; and

a second link coupled to said second end of said sway bar and said second link coupled to a second location of said vehicle.

Assignments (5)
SECURITY INTEREST Recorded Oct 27, 2025
From: FOX FACTORY, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 073270/0027 →
RELEASE OF SECURITY INTEREST Recorded Apr 13, 2022
From: BANK OF AMERICA, N.A.
To: FOX FACTORY, INC.
Reel/Frame 059704/0224 →
SECURITY INTEREST Recorded Apr 5, 2022
From: FOX FACTORY, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 059616/0435 →
PATENT SECURITY AGREEMENT Recorded Jun 5, 2019
From: FOX FACTORY, INC.
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 049388/0585 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 27, 2018
From: TSIARAS, PHILIP; STRICKLAND, RICK
To: FOX FACTORY, INC.
Reel/Frame 046999/0801 →