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:
Jan. 27, 2015
Filed:
Mar. 29, 2013
Gloucester Engineering Co., Inc., Gloucester, MA (US);
Michael Charles Andrews, Beverly, MA (US);
Chad Allen Biron, Gloucester, MA (US);
William Welsh Bode, Essex, MA (US);
William Ellery Jones, Gloucester, MA (US);
Bruce Michael O'Connor, Gloucester, MA (US);
Mark Dean Steele, Rockport, MA (US);
Gloucester Engineering Co., Inc., Blackburn Industrial Park, Gloucester, MA (US);
Abstract
An annular die has a mandrel having a spiral groove formed in a surface of the mandrel that distributes a flow of liquid across the mandrel surface and directs the flow of liquid in a flow direction across the spiral groove and across the mandrel surface. At least a portion of the spiral groove has a cross-section configuration where an interior surface of the spiral groove portion is oriented toward the flow direction as the interior surface extends to and intersects with the mandrel surface. The annular die has particular, but not limited, application as a blown film die.