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:
Jul. 07, 2009
Filed:
Apr. 21, 2004
Bjørn Eilertsen, Hundvåg, NO;
Bjørn Eilertsen, Hundvåg, NO;
EDM Engineering & Drilling Machinery AS, Stavanger, NO;
Abstract
A fluid pump comprising a plurality of piston cylinders (), wherein each individual cylinder has a piston rod () with a piston () arranged in the cylinder and a valve housing () mounted at the end of the cylinder opposite the piston rod, and a drive arrangement for the piston rods, said drive arrangement comprising two main gearwheels () which mesh and rotate in opposite directions. The present fluid pump is characterized in that the reciprocating motion of the piston rods (), which extend in pairs in opposite directions, is effected with the aid of two beams () that are fixed to the end of the respective pair of piston rods opposite the pistons (), and which extend at right angles relative to the piston rods, and that the beams are connected to the main gearwheels () by shaft pins () which move in pairs in guides () provided in the longitudinal direction of the respective beam. The guide () may extend in the shape of a sine curve.