IP Library Granted Patent US 12,522,042
Granted Patent B1
US 12,522,042 · App. 18/925,792 · Granted Jan 13, 2026

Linked gas chambers for e-sway disconnect

Inventors: Andrew Brennan (Pleasanton, CA); Patrick Burke (Scotts Valley, CA); Rick Strickland (Winder, GA)
Assignee: Fox Factory, Inc.
B60G21/0558B60G17/08B60G2202/135B60G2202/242
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Quick Facts
Patent No.
US 12,522,042
App. No.
18/925,792
Granted
Jan 13, 2026
Kind
B1
Abstract

A damper link associated with a sway bar system is disclosed. The damper link can include a damper chamber with a first fluid reservoir, a shaft configured to move in an out the damper chamber, and a piston. The damper link can further include a negative gas chamber housed in the damper chamber wherein a gas in the gas chamber is compressed or decompressed by a movement of the piston. The damper link can further include an additional reservoir with a positive gas chamber. The damper link can further include a hose fluidly connecting the negative gas chamber to the positive gas chamber to maintain a constant gas pressure between the negative gas chamber to the positive gas chamber.

Claims (39)

1 . A sway bar system, comprising:

a first damper link comprising:

a damper chamber with a first fluid reservoir;

a shaft configured to move in an out said damper chamber;

a piston connected to an end of said shaft and configured to move within said damper chamber;

a negative gas chamber housed in said damper chamber wherein a gas in said negative gas chamber is compressed or decompressed by a movement of said piston;

an additional reservoir comprising:

a second fluid reservoir;

a positive gas chamber;

an internal floating piston that movably separates said second fluid reservoir from said positive gas chamber; and

a hose fluidly connecting said negative gas chamber to said positive gas chamber to maintain a constant gas pressure between said negative gas chamber to said positive gas chamber;

a second damper link; and

a sway bar with a first end connected to a first connector of said first damper link and second end of said sway bar connected to first connector of said second damper link.

2 . The sway bar system of claim 1 , wherein said first damper link further comprising:

a base valve to control a flow of fluid between said first fluid reservoir and said second fluid reservoir and provides an ability to switch between a rigid sway bar connection or a loose sway bar connection.

3 . The sway bar system of claim 2 , wherein said base valve is a pilot valve.

4 . The sway bar system of claim 2 , wherein said base valve is selected from a group consisting of a modal valve, a semi active valve, an active valve, a passive valve, and a two-stage valve.

5 . The sway bar system of claim 2 , wherein said base valve is a remotely controlled valve.

6 . The sway bar system of claim 2 , wherein said base valve is a manually controlled valve.

7 . The sway bar system of claim 1 wherein, said first damper link and said second damper link are capable of self-centering said sway bar.

8 . A vehicle sway bar system comprising:

a vehicle;

a sway bar;

at least one damper link connecting said sway bar to said vehicle, wherein said at least one damper link comprises:

a damper chamber with a first fluid reservoir;

a shaft configured to move in an out said damper chamber;

a piston connected to an end of said shaft and configured to move within said damper chamber;

a negative gas chamber housed in said damper chamber wherein a gas in said negative gas chamber is compressed or decompressed by a movement of said piston;

an additional reservoir comprising:

a second fluid reservoir;

a positive gas chamber;

an internal floating piston that movably separates said second fluid reservoir from said positive gas chamber; and

a hose fluidly connecting said negative gas chamber to said positive gas chamber to maintain a constant gas pressure between said negative gas chamber to said positive gas chamber.

9 . The vehicle sway bar system of claim 8 , wherein said at least one damper link further comprising:

a base valve to control a flow of fluid between said first fluid reservoir and said second fluid reservoir and provides an ability to switch between a rigid sway bar connection or a loose sway bar connection.

10 . The vehicle sway bar system of claim 9 , wherein said base valve is a pilot valve.

11 . The vehicle sway bar system of claim 9 , wherein said base valve is selected from a group consisting of a modal valve, a semi active valve, an active valve, a passive valve, and a two-stage valve.

12 . The vehicle sway bar system of claim 9 , wherein said base valve is a remotely controlled valve.

13 . The vehicle sway bar system of claim 9 , wherein said base valve is a manually controlled valve.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 26, 2025
From: BRENNAN, ANDREW; BURKE, PATRICK; STRICKLAND, RICK
To: FOX FACTORY, INC.
Reel/Frame 073045/0490 →
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