Flow selector
AssigneeB. Braun Melsungen AG
InventorFreddie Eng Hwee Lee
Life of this patent
Estimating the term…
Abstract
An apparatus for selecting a flow rate of a fluid includes a barrel including an output port and a plurality of input ports; and an axle disposed substantially concentrically within the barrel. A plurality of drain channels are formed in an outer surface of the axle, each drain channel having a depth less than a thickness of a wall of the axle. The axle is rotatable within the barrel to provide one of a plurality of flow paths between one of the plurality of input ports and the output port, each flow path at least partially defined by at least one of the drain channels.
Claims19
An apparatus for selecting a flow rate of a fluid, the apparatus comprising:
- a barrel including an output port, a plurality of input ports, and a plurality of drain cavities formed longitudinally along an inner surface of the barrel;
- and
- an axle disposed substantially concentrically within the barrel, wherein a plurality of drain channels are formed on an outer surface of the axle, each of the plurality of drain channels having a depth less than a thickness of a wall of the axle and configured to align with at least one of the plurality of drain cavities,
- wherein the axle is rotatable within the barrel to provide one of a plurality of flow paths between one of the plurality of input ports and the output port, each of the plurality of flow paths at least partially defined by at least one of the plurality of drain channels aligning with at least one of the plurality of drain cavities.
An apparatus for selecting a flow rate of a fluid, the apparatus comprising:
- a barrel formed of a plurality of barrel segments, each barrel segment having a different radius, wherein the barrel has an output port and a plurality of input ports;
- and
- an axle formed of a plurality of axle segments, each axle segment having a different radius, wherein each barrel segment corresponds to one of the plurality of axle segments,
- wherein the axle is disposed substantially concentrically within the barrel,
- wherein a plurality of drain channels are formed in an outer surface of the axle, each of the plurality of drain channels having a depth less than a thickness of a wall of the axle,
- wherein the axle is rotatable within the barrel to provide one of a plurality of flow paths between one of the plurality of input ports and the output port, each of the plurality of flow paths at least partially defined by at least one of the plurality of drain channels,
- wherein at least one gap is present between the axle and the barrel, each gap located at a boundary between one of the plurality of barrel segments and an adjacent one of the plurality of barrel segments.
Dependencies are inferred from the claim text.