FILTER Russian patent published in 2003 - IPC

FIELD: cleaning of fluids in various hydraulic systems. SUBSTANCE: filter has body with bottom, cover, inlet and outlet holes, relief valve and filtering element. Bottom of body comes in the form of circular corrugation, one conical section of it transferring to ring part anchors pipe union. Convex washer is mounted with circular clearance on this pipe union for interaction with conical section of corrugation. Sealing ring conjugate to pipe union is positioned between lower face of filtering element and washer. EFFECT: reduced labor input and diminished usage of metal for manufacture of filter, enhanced operational reliability of filter. 3 cl, 2 dwg