Regulated radial piston pump

Claim 1

Regulated readial piston pump, comprising, in combination, casing means; journal means mounted in said casing means and having inlet duct means and outlet duct means; driven rotor means mounted on said journal means for rotation about a rotor axis, and including a cylindrical control bushing surrounding said journal means in the region of said ports and forming a thin annular leakage gap with said journal means in which said duct means communicate so that said control bushing floats on said journal means, and a rotor having working chambers communicating with said duct means, and piston means radially movable in said working chambers and having outwardly located guide parts; two roller bearings located on said journal means on opposite sides of said control bushing and supporting said rotor for rotation; tiltable support means having a support part for mounting said support means on said casing means for angular movement about a pivot axis parallel to said rotor axis, and an operating part; guide ring means rotatably supported on said tiltable support means eccentrically surrounding said rotor and having an annular guide surface slidingly engaged by said guide parts of said piston means so that said piston means are operated during rotation of said rotor means; and a regulating setting device mounted on said casing means and including movable control means engaging said operating part for angularly shifting the same with said support means and said guide ring means about said pivot axis between positions of different eccentricity of said annular guide surface in relation to said rotor axis.