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US 12,692,628 B2Granted
Aspirator for manipulating filaments
AssigneeColumbia Insurance Company
InventorsAdam Tankersley, Jesse Guzowski
Life of this patent
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Abstract
An aspirator provides linear control over air flow for manipulation of extruded fibers. A distribution manifold has a barrel valve between first and second flow channels, enabling precise, linear control over air flowing from a charge conduit to a pressure chamber surrounding a discharge pipe. Plural orifices in the discharge pipe connect the pressure chamber to the interior thereof, which is configured as a Venturi tube. Discharge pipe surfaces that can contact filaments therein are of hardened material while non-contact surfaces are of lighter materials.
Claims19
A barrel valve assembly comprising:
- a valve body being substantially symmetrical about an axis of symmetry;
- first and opposite second ends along the valve body axis of symmetry;
- and
- a passage formed laterally through the valve body, the passage comprising:
- mutually parallel, planar first and second side walls, each lying in respective plane that is parallel to the axis of symmetry of the valve body,
- a first planar end wall, intermediate ends of the first and second side walls most proximate the valve body first end,
- a second planar end wall, intermediate ends of the first and second side walls most proximate the valve body second end, the first end wall being parallel to the second end wall and both the first and second end walls lying in a respective plane that is orthogonal to the valve body axis of symmetry, and
- transition regions between the first planar end wall and the ends of each of the first and second side walls most proximate the valve body first end and between the second planar end wall and the ends of each of the first and second side walls most proximate the valve body second end,
- wherein a plane equidistant to each of the first and second side walls is parallel to, but offset from, the valve body axis of symmetry.
6 more elements
Dependencies are inferred from the claim text.