The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 1983
Filed:
Apr. 13, 1981
Robert Church, Bartlett, NH (US);
Gloucester Engineering Co., Inc., Gloucester, MA (US);
Abstract
An air ring of the type mounted concentrically with a moving tube of plastic at a point close to where the plastic emerges from an annular die to receive, guide and discharge air in a desired direction to expose cooling air to the surface of the tube, the air ring having a circular array of a multiplicity of substantially parallel, cell-like passages, each passage having orthogonal lateral dimensions (X and Y directions) transverse to the local direction of flow (Z direction) that are less than one-half of the flow length, and divide the flow path to the outlet into a multiplicity of individual cell-like flow paths, the aggregate flow area presented by the passages being at least 80% of the inlet surface of the array. The array of passages and cooperating surfaces of the air ring are adapted to deliver a general nonhomogeneous flow to the array, to momentarily divide the flow into discrete, parallel, oriented streams which remerge into a second general, radially directed flow toward the surface of the tube, the multiplicity of streams being effective to orient air flow and to remove major turbulences and vortices in both orthogonal directions with relatively little pressure drop occuring across the array.