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. 22, 2001
Filed:
Sep. 13, 1999
Romeo Paladin, Oderzo, IT;
PAL Srl, Ponte di Piave, IT;
Abstract
Device incorporating rollers to separate particles of different gradings a plurality of adjacent rollers (,) forming a selection bed where each roller (,) has a surface conformation defining a plurality of circumferential peaks (,) alternating with circumferential grooves (,), the rollers (,) including at least a working position where the grooves (,) of one roller are facing and at least partly penetrated by the peaks (,) of the adjacent roller (,), the discharge gap (,) between the two adjacent rollers (,) having a substantially zig-zag development, in at least some rollers (,) the connection surface (,) between the peaks (,) and grooves (,), and/or the peaks (,) and/or the grooves (,) themselves being at least partly worked with protuberances, protrusions, hollows and/or facets (,).