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:
May. 07, 1996
Filed:
Apr. 07, 1994
John Wise, Hamilton, OH (US);
Larry L Martin, Hamilton, OH (US);
Advanced Drainage Systems, Inc., Columbus, OH (US);
Abstract
An improved manifold assembly which can be used in the extrusion of a plastic with the manifold assembly having a die having a first end and a second end, with the die having a die head sectored at the second end, sets of a plurality of tubes located centrally of one another, each set positioned longitudinally within a respective die manifold tube with the outermost surface of each set of tubes spaced a first distance from the die manifold tube, each of the die manifold tubes extending through the die, at least two calibration fingers secured to the die, each of the calibration fingers having a proximal portion adjacent the die head, the proximal portion of each calibration finger being spaced a second distance from the die head, with the manifold assembly being vented to atmosphere by a venting channel, the venting channel extending from between the proximal tip and the die head to the first end of the die head with a portion of the venting channel being between the die manifold tube and the otuermost surface of each set of tubes.