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:
Feb. 06, 1990
Filed:
Apr. 04, 1988
Jean-Pierre Lamort, Vitry Le Francois, FR;
E & M Lamort, Vitry Le Francois, FR;
Abstract
A screening device is provided with a screening element having a plurality of perforations going therethrough. Each perforation has an inlet and an outlet. The screen element includes a plurality of step-type obstacle members positioned in the vicinity of the inlets of the perforations to produce turbulence in a flow of a fluid passing through the perforations. Each obstacle member has a shielding member positioned substantially above the inlet so that a gap is defined between the shielding member and the screening element. The shielding element extending over the inlet of the perforation forms an entry baffle above the outlet. At least one blade having a hydrodynamic profile rotates at high speed above the shielding element.