Patent ID: 6173859
Filing Date: 2001-01-16
Classification: B01D,F02M,Y10S

Abstract:
A housing for a filter, comprisinga pot-shaped base having an outer wall,a lid that seals the base in a pressure-tight manner,one or more structural elements that abut the base wall in the vicinity of the seal formed between the base and the lid when assembled, andat least one rib formed on the wall of the base and running radially about the base-in the vicinity of the seal, said rib being nonuniform in size along the circumference of the base, and the rib having a reduced cross section in the area in which the structural elements abut the base wall,wherein the lid and the base are screwed directly to one another by matching threads when assembled, such that the cross-sectional change in the rib is adapted to produce a nearly constant circumferential rigidity of the base against any pressure stress that develops internally within the base.