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US 9,239,090 B2Granted
Suspension damper with remotely-operable valve
AssigneeFox Factory, Inc.
InventorJohn Marking
Life of this patent
Estimating the term…
Abstract
A vehicle damper comprising a cylinder and a piston; a working fluid within the cylinder; a reservoir in fluid communication with the working fluid to receive working fluid from the cylinder in a compression stroke; and a remotely-operable valve, the valve operable to permit and restrict flow of the working fluid between the cylinder and the reservoir.
Claims16
A vehicle damper comprising:
- a cylinder and a piston;
- a working fluid within the cylinder;
- a reservoir in fluid communication with the working fluid, the reservoir operable to receive working fluid from the cylinder in a compression stroke;
- a reservoir valve assembly located intermediate of the cylinder and the reservoir, the reservoir valve assembly including:
- a single fluid path opening into the reservoir valve assembly;
- a remotely-operable valve having a first fluid path having a seat at an end thereof and a plunger selectively positionable with respect to the seat and the first fluid path, the remotely-operable valve operable to permit and restrict flow of the working fluid between the cylinder and the reservoir, the plunger positionable in a retracted position and a closed position, whereby in the closed position the plunger abuts the seat and closes off the first fluid path, and at least one intermediate position between the closed position and retracted position wherein the plunger is not in contact with the seat and is spaced from the seat and permits the working fluid to flow from the cylinder to the reservoir independent of fluid force;
- a second fluid path;
- a third fluid path;
- wherein the second fluid path includes a second valve that is configured to block fluid flow from the reservoir to the cylinder and restrict fluid flow from the cylinder to the reservoir, and the third fluid path includes a third valve that is configured to restrict fluid flow from the reservoir to the cylinder and block fluid flow from the cylinder to the reservoir,
- wherein the first fluid path and the second fluid path of the reservoir valve assembly are configured to simultaneously permit the working fluid to flow from the single fluid path to the reservoir, and
- wherein the first fluid path and the third fluid path of the reservoir valve assembly are configured to simultaneously permit the working fluid to flow from the reservoir to the single fluid path.
8 more elements
Dependencies are inferred from the claim text.