Patent ID: 6402798
Filing Date: 2002-06-11
Classification: B01D,F02M

Abstract:
A filter housing extending along an axis comprising first and second mating housing sections, one of said housing sections being a base extending axially between distally opposite axial ends, the other of said housing sections being a cover mounted to one of said axial ends of said base by twist and lock structure providing an axial retention force holding said base and cover in axial assembled condition upon axial movement of said base and cover towards each other followed by rotation in a first rotational direction about said axis, said twist and lock structure having a first position permitting axial movement of said base and cover relative to each other, said twist and lock structure being rotatable in said first rotational direction from said first position to a second position, said twist and lock structure in said second position preventing axial movement of said base and cover relative to each other, said twist and lock structure being rotatable in a second rotational direction from said second position to said first position, said second rotational direction being opposite to said first rotational direction, anti-rotation lock structure comprising an arm mounted to said first housing section and extending partially circumferentially therealong along an arc of said rotation and releasably engaging said second housing section and applying a rotational retention force in a direction along said arm tangent to said arc and holding said twist and lock structure in said second position, wherein said arm extends between first and second circumferentially spaced ends, said first end is stationarily integrally mounted to said first housing section and said arm flexes along a bend line parallel to said axis.