Patent ID: 7608136
Filing Date: 2009-10-27
Classification: B01D,F16L,Y10T

Abstract:
1. An in-line filter provided with a transponder and a substantially elongated filter housing in which filtering material is included, the filter housing being provided on a first end with an inflow opening and on a second, opposite end with an outflow opening, while at the inflow opening and the outflow opening fastening means are provided for fastening a supply or discharge tube, respectively, wherein the fastening means are quick-change couplings, a respective quick-change coupling having a coupled condition and an uncoupled condition, while in the quick-change coupling a shut-off valve is provided which, in the coupled condition, assumes an open position and thus allows gas to pass and which, in an uncoupled condition, assumes a closed position and thus does not allow gas to pass; wherein each quick-change coupling comprises a male part and a female part through which a bore extends, which forms the fluid communication between the supply or discharge tube, respectively, and the inflow opening or outflow opening, respectively, of the filter housing, while, with the male part and the female part in coupled condition, the quick-change coupling is in the coupled condition and with the male part and the female part in uncoupled condition, the quick-change coupling is in the uncoupled condition; and wherein the shut-off valve is disposed in the bore of the male part; is biased in a closed position by a spring; and comprises a valve body and a valve stem, the valve body being arranged for cooperation with a valve seat in the bore of the male part, the valve stem being provided with a collar against which the spring rests with a first end, while another end of the spring rests against a supporting surface provided in the male part, as a constriction is provided in the bore, while, when the male part is placed in the female part, with an end facing away from the valve body, the valve stem meets a stop in the female part such that movement against the spring force of the spring is effected.