Filter and method of forming same
AssigneePlastisonics Company, Inc.
InventorDavid E. Michalski
Life of this patent
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Abstract
This disclosure relates to a filter which includes a plastic housing and which has an intermediate filter screen. The peripheral portion of the screen is sealed between the two housing halves by flowing a portion of at least one of the housing halves through the screen and bonding that portion to the other housing half. Further, the housing has peripheral walls which are bonded to one another after partial assembly through an interference fit and a concentrated heating of the material of the housing halves.
Claims7
A filter assembly comprising a two piece housing assembly and a planar intermediate filter screen within said housing assembly, said housing assembly including a first housing part having a first peripheral wall terminating in a first continuous support surface, a second housing part having a second peripheral wall forming generally a continuation of said first peripheral wall and terminating in a second continuous support surface opposing said first support surface, said filter screen having a continuous peripheral portion disposed between said support surfaces, and a peripherally continuous portion of one of said support surfaces extending through said filter screen peripheral portion and forming a continuous heat bonded seal with the other of said support surfaces, said first peripheral wall having integrally connected thereto a third peripheral wall telescoped over said second peripheral walls outwardly of said filter screen, and there being a continuous bond between an outer surface of said second peripheral wall and an inner surface of said third peripheral wall.
Dependencies are inferred from the claim text.