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:
Apr. 18, 2017
Filed:
Feb. 13, 2015
Voice Systems Technology, Inc., Harvard, MA (US);
Vincent Fedele, Harvard, MA (US);
Voice Systems Technology, Inc., Harvard, MA (US);
Abstract
A coffee filter includes a metallic member having a flat portion in which tapered exit regions are formed that extend from the bottom of the flat portion to vertices interior to the flat portion. The flat portion is provided with a hole uniformity enhancement region between the top of the flat portion and the exit region vertices that are interior to the flat portion. The top of the flat portion is micro-machined to remove a part of the hole uniformity enhancement region to a predetermined depth into the hole uniformity enhancement region. Holes are formed in the top of the flat portion extending from the micro-machined top of the flat portion through the hole uniformity enhancement region to the vertices of the tapered exit regions. The predetermined depth of the micro-machined top of the flat portion is selected to prevent the micro-machined top of the flat portion from meeting the tapered exit regions to promote and maintain uniformity of the holes.