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. 14, 1998
Filed:
Aug. 21, 1996
Applicant:
Inventors:
Vasco Mezzedimi, Poggibonsi, IT;
Giampietro Ferrari Aggradi, Florence, IT;
Assignee:
Nuovo Pignone S.p.A., Florence, IT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F04C / ; F04C / ;
U.S. Cl.
CPC ...
418102 ; 418202 ;
Abstract
Twin-screw pump, wherein the four conical screws are vertically arranged and are fed with biphase fluid at the two ends, independently of each other, by means of a stream divider and wherein the two screw shafts each have a central axial drilling which connects the delivery chamber to a series of radial channels which end up on the tip of the single teeth of the screws. A preferen-tial stream divider is described.