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:
Oct. 08, 2013
Filed:
Aug. 31, 2009
Peter Francis Carcia, Wilmington, DE (US);
Calixto Estrada, Middletown, DE (US);
Richard Dale Kinard, Wilmington, DE (US);
Robert Scott Mclean, Hockessin, DE (US);
Kirstin H. Shilkitus, Landenberg, PA (US);
Peter Francis Carcia, Wilmington, DE (US);
Calixto Estrada, Middletown, DE (US);
Richard Dale Kinard, Wilmington, DE (US);
Robert Scott McLean, Hockessin, DE (US);
Kirstin H. Shilkitus, Landenberg, PA (US);
E I du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A cassette for supporting a film during a gaseous vapor deposition process includes a central shaft having first and second end plates. A rib on each end plate forms a spiral groove able to accept an edge of a film. Each rib has a cross sectional configuration having substantially linear major edges, a predetermined width dimension and a predetermined average thickness dimension, and a width-to-thickness aspect ratio of at least 2:1. The rib could be substantially rectangular with an optional flow spoiler at the free end or substantially wedge-shaped. The interspoke spacing between end plates is at least three hundred millimeters (300 mm) and is also greater than the width dimension of a film substrate at a gaseous deposition temperature. The width dimension of each rib is between about 0.5% to about 2.0% of the interspoke spacing.