US 12,070,981 B2
Internal stroke sensor for an IFP shock assembly
Connor Randall, Scotts Valley, CA (US)
Assigned to Fox Factory, Inc., Duluth, GA (US)
Filed by Fox Factory, Inc., Duluth, GA (US)
Filed on Oct. 21, 2021, as Appl. No. 17/507,169.
Claims priority of provisional application 63/106,131, filed on Oct. 27, 2020.
Prior Publication US 2022/0126644 A1, Apr. 28, 2022
Int. Cl. B60G 17/04 (2006.01); B60G 13/08 (2006.01); B60G 17/08 (2006.01); F16F 9/46 (2006.01); B60G 15/06 (2006.01)
CPC B60G 17/08 (2013.01) [B60G 13/08 (2013.01); F16F 9/466 (2013.01); B60G 15/062 (2013.01); B60G 2202/24 (2013.01); B60G 2400/252 (2013.01); B60G 2400/5182 (2013.01); B60G 2400/7162 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A shock assembly comprising:
a damper chamber;
a damping piston coupled to a piston shaft, said damping piston disposed in said damper chamber and axially movable relative to said damper chamber, said damping piston separating a compression portion from a rebound portion within said damper chamber;
an internal floating piston (IFP);
an IFP location sensor, said IFP location sensor to determine a position information for said IFP; and
a processor configured to:
receive said position information for said IFP from said IFP location sensor;
receive a temperature measurement for damping fluid of said shock assembly; and
utilize said temperature measurement to perform a thermal expansion correction on said position information for said IFP; and
utilize said position information for said IFP and said thermal expansion correction on said position information for said IFP to determine a shock stroke position of said shock assembly.