Patent ID: 6837690
Filing Date: 2005-01-04
Classification: F02M,F04B,F04C

Abstract:
1. A rotary pump for delivering a fluid, comprising: a pump housing which includes an intake and an outlet, a rotary pumping unit mounted for rotation in said pump housing for delivering the fluid from said intake to said outlet, a hand pump unit integrally joined to the pump housing and having a discharge outlet which communicates with the intake of the pump housing, so that the hand pump unit can deliver the fluid into the intake of the pump housing, wherein the hand pump unit comprises a cylinder-piston arrangement which is configured to deliver the fluid to the intake of the housing, wherein the cylinder-piston arrangement includes a piston which is connected to an external actuation element so as to be manually reciprocable along an axis which is generally perpendicular to an axis of rotation of the rotary pumping unit, and wherein the piston is moveable by the actuation element to an idle position wherein a fluid is able to freely pass through the cylinder-piston arrangement and into the intake of the pump housing.