Herb grinder
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United States of America Patent
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Mar 18, 2014
Grant Date -
Feb 28, 2013
app pub date -
Feb 17, 2012
filing date -
Jan 20, 2011
priority date (Note) -
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Abstract
A herb grinder includes a metal sheet having a first surface and an opposite second surface. the sheet being configured to include, on at least one of the surfaces, a plurality of grooves extending parallel with one another and spaced apart from one another, wherein the grooves and at least one of the surfaces, a plurality of grooves extending parallel with one another and spaced apart from one another, wherein the grooves and said at least one of the surfaces define a square wave shape having flat valleys and flat peaks, wherein the flat valleys are roughened by a process of photochemical etching. A plurality of holes of a first type, extending from a peak to the bottom surface of the metal sheet, and a plurality of holes of a second type extending from a valley to the bottom surface of the metal sheet. The metal sheet may include an opening adjacent an edge of the sheet, and a flexible link may be fastened to the metal sheet through the opening.
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