US Patent 7163222 Bicycle fork having lock-out, blow-off, and adjustable blow-off threshold

A bicycle fork includes a pair of fork leg assemblies, each of the leg assemblies having an upper leg telescopingly engaged with a lower leg. A damping assembly is provided in at least one of the legs. The damping assembly includes an adjustable valve, sometimes referred to as a pressure-relief or blow-off valve. The adjustable valve is externally adjustable without tools. Furthermore, the adjustable valve and another fluid flow control valve may be adjusted independently of each other.