Back to results
US 12,416,361 B2Granted
Valve assembly and method
AssigneeG.W. Lisk Company, Inc.
InventorsBrian Smith, Daniel Meath, Stephen Muscarella
Life of this patent
Estimating the term…
Abstract
Embodiments of the present disclosure present a valve assembly that includes a valve body having a gas passage bore, a valving bore extending along a longitudinal axis and intersecting the gas passage bore, a first bearing surface concentric with the longitudinal axis and a radially spaced apart second bearing surface concentric with the longitudinal axis, wherein an interface of the gas passage bore and the valving bore defines a flow port radially intermediate the first bearing surface and the second bearing surface. The valve assembly further includes a shaft valve extending along the longitudinal axis and rotatably mounted in the valving bore.
Claims20
A method comprising:
- (a) providing valve body having a gas passage bore, a valving bore extending along a longitudinal axis and intersecting the gas passage bore, a first bearing surface concentric with the longitudinal axis and a radially spaced apart second bearing surface concentric with the longitudinal axis, wherein an interface of the gas passage bore and the valving bore defines a flow port radially intermediate the first bearing surface and the second bearing surface;
- and
- (b) providing a shaft valve extending along the longitudinal axis and rotatably mounted in the valving bore, the shaft valve having a first peripheral contact surface configured to engage the first bearing surface, a second peripheral contact surface configured to engage the second bearing surface and a vane radially intermediate the first peripheral contact surface and the second peripheral contact surface, wherein the first and the second peripheral contact surfaces have a given diameter and the vane encompasses the given diameter and wherein rotation of the shaft valve relative to the valve body selectively permits flow through the gas passage bore, wherein the valve body defines a pair of opposing sealing bands extending parallel to the longitudinal axis, each sealing band configured to engage a corresponding longitudinal edge of the vane, and wherein the valve body includes a first and a second opposing channel each extending perpendicular to the longitudinal axis through one of the pair of sealing bands.
A valve assembly comprising:
- (a) a valve body having a gas passage bore, a valving bore extending along a longitudinal axis and intersecting the gas passage bore, a first annular bearing surface concentric with the longitudinal axis and a radially spaced apart second annular bearing surface concentric with the longitudinal axis, wherein an interface of the gas passage bore and the valving bore defines a flow port radially intermediate the first bearing surface and the second bearing surface;
- and
- (b) a shaft valve extending along the longitudinal axis and rotatably mounted in the valving bore, the shaft valve having a first peripheral contact surface configured to engage the first bearing surface, a second peripheral contact surface configured to engage the second bearing surface and a vane radially intermediate the first peripheral contact surface and the second peripheral contact surface, wherein the first and the second peripheral contact surfaces have a given diameter and the vane encompasses the given diameter and wherein rotation of the shaft valve relative to the valve body selectively permits flow through the gas passage bore, wherein the valve body defines a pair of opposing sealing bands extending parallel to the longitudinal axis, each sealing band configured to engage a corresponding longitudinal edge of the vane, and wherein the valve body includes a first and a second opposing channel each extending perpendicular to the longitudinal axis through one of the pair of sealing bands.
An exhaust gas recirculation valve comprising:
- (a) a valve body having a gas passage bore extending between at least one inlet and an at least one outlet, wherein the at least one inlet is configured to receive an exhaust gas from an exhaust manifold of an internal combustion engine and the at least one outlet is configured to pass exhaust to an inlet manifold of the internal combustion engine, the gas passage bore including a first inlet gas passage extending from the at least one inlet, the valve body having a valving bore intersecting the first inlet gas passage, the valving bore defining a first circular bearing surface and a second annular bearing surface;
- and
- (b) a shaft valve slideably received within the valving bore, the shaft valve having a first contact surface for rotatably engaging the first circular bearing surface and a second contact surface for rotatably engaging the second circular bearing surface, and a vane, wherein the first contact surface, the second contact surface and the vane have a common diameter, wherein the valve body defines a pair of opposing sealing bands extending parallel to the longitudinal axis, each sealing band configured to engage a corresponding longitudinal edge of the vane, and wherein the valve body includes a first and a second opposing channel each extending perpendicular to the longitudinal axis through one of the pair of sealing bands, and wherein the sealing bands have a V-shaped edge adjacent a channel defined in the valve body operable to allow a flow to pass therethrough.
Dependencies are inferred from the claim text.