Patent ID: 8973608
Filing Date: 2015-03-10
Classification: F04F,Y10T

Abstract:
1. A fluid pressure amplifier which includes a housing ( 1 ) containing a chamber ( 4 ), an inlet pipe ( 7 ) projecting into the chamber, a delivery outlet ( 8 ) communicating with the inlet pipe, a resilient obturator ring ( 13 ) engaged with and located about the inlet pipe and resiliently-movable in the chamber, an annular exhaust aperture ( 14 ) surrounding the inlet pipe which can be sealed by the obturator ring, the obturator ring ( 13 ) being responsive to fluid flow in the inlet pipe such that fluid flow causes the obturator ring to oscillate between conditions which alternately permit and prevent fluid from leaving the chamber through the exhaust aperture, thereby causing a pulsed pressure increase in the fluid flowing through the delivery outlet, and means ( 23 ) for adjusting the distance by which the fluid inlet pipe projects into the chamber to vary the distance between the obturator ring and the annular exhaust aperture, characterised in that the inlet pipe (