SPIN-ON FILTER WITH PERFORMANCE ENHANCEMENT FEATURES

摘要

PROBLEM TO BE SOLVED: To provide a low-cost and disposable spin-on fluid filter. SOLUTION: A disposable spin-on fluid filter 20 for mounting on a fluid directing head includes a molded housing having a closed base and a side wall defining a hollow cavity. A filtering medium is arranged in the hollow cavity and a nut plate 22 is connected to the housing so as to enclose the filtering medium. The nut plate includes a plurality of inlet flow openings and a foliated sleeve extending into the filtering medium. An end plate is connected to the filtering medium including a flange portion and a sleeve portion. The fluid filter includes an elastomeric flow control valve having a first part arranged between the flange portion and the plurality of inlet flow openings and a second part arranged between the sleeve portion and the foliated sleeve. The valve provides an anti-drain back capability and in cooperation with the foliated sleeve provides a filtering medium by-pass capability. COPYRIGHT: (C)2006,JPO&NCIPI