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:
Mar. 08, 1994
Filed:
Sep. 15, 1992
Costantino Vinciguerra, Florence, IT;
Andrea Brocchini, Scandicci, IT;
Nuoyopignone-Industrie Meccaneche e Fonderia SpA, Milan, IT;
Abstract
An entrainment pump for viscous fluids comprising a moving member which dips into the fluid and of which a flat wall cooperates, without contact but with a very small clearance, with seals provides on the sides and at the rear end of a static element consisting of a box guide elongate in the direction of movement of said moving member, in this guide there being provided successive trap chambers which with said moving flat wall form clearances progressively decreasing in the direction of said movement and of the same order of magnitude as the particular thickness of the dragged fluid. Preferred embodiments are also provided.