Patent ID: 8348227

Claim:
A flow rate regulator comprising: a centrally or peripherally disposed element with a radial regulating profile having raised and lowered portions in a radial direction; and an annular restrictor which is made of an elastic material; wherein, in a functional position of said flow rate regulator, said restrictor delimits a control gap between itself and said regulating profile and the raised and lowered portions of the radial regulating profile face the annular restrictor in the radial direction; in a starting position, of said flow rate regulator, said flow rate regulator has an internal flow cross section that is larger than the control gap; an internal flow cross section of the control gap is variable by a deformation of said restrictor under a pressure differential that is generated when a fluid flows through the flow rate regulator; a relative position of the restrictor and the regulating profile is variable, and moveable against a reset force, into the functional position from the starting position, in response to a flow of fluid within said flow rate regulator, wherein the restrictor is mounted on a tapered mandrel which has a diameter that increases in a flow direction, and can be moved on said tapered mandrel, subject to expansion against its own elasticity, from the starting position into the functional position, under pressure of the fluid flow.