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US 5,516,273 AGranted
Die for extruding a fluid stream
AssigneeMinnesota Mining and Manufacturing Company
InventorsMichael D. Delmore, Gary W. Maier
Life of this patent
Estimating the term…
Abstract
A die useful in coating and extrusion processes has a housing and an insert removably received in a chamber of the housing. The insert controls to some extent the characteristics of fluid flow in the die as well as the fluid flow exiting the die. The insert is elongated and is round in sections perpendicular to its longitudinal axis, so that it may be inexpensively made by a lathe. As such, a number of inserts of varying configurations may be retained on hand and used as needed to vary the flow characteristics when desired.
Claims7
A die for extruding a fluid stream comprising:
- a housing having inner wall sections defining a chamber, said inner wall sections including a cylindrical section, said housing including an inlet passageway in communication with said chamber and an outlet passageway in communication with said chamber;
- and
- an insert removably received in said chamber, said insert having a body portion with a central axis and a flow-controlling peripheral surface extending in an arc around said central axis, said central axis being oriented generally perpendicular to the direction of fluid flow moving through said inlet passageway toward said chamber and moving through said outlet passageway away from said chamber, said insert having a first end portion and a second end portion, said body portion being located between said end portions, both of said first end portion and said second end portion being in detachable engagement with said wall sections of said housing, and wherein at least one of said end portions includes a cylindrical surface that is complemental to and engages said cylindrical section.
Dependencies are inferred from the claim text.