Integrity testable multilayered filter device

Details Integrity testable multilayered filter device Integrity testable multilayered filter device

2011-08-16

2011-08-16

Kurtz, Benjamin (Department: 1772)

Liquid purification or separation

Plural distinct separators

Filters

C210S342000, C210S485000, C210S493200, C210S256000

Reexamination Certificate

active

07998349

ABSTRACT:
The present invention relates to a device having two or more separate filtration layers that can be independently tested for integrity yet which allow for serial filtration through the two or more layers to obtain the desired characteristics such as retention. The device is made of two or more filtration areas, each containing one filter layer. Each area has one filtration layer and a first endcap bonded to a first end of the filter and a second endcap bonded to a second end of the filter. The areas are arranged concentrically around each other such that the first area is inward of the second area which is inward of a third area and the like. Each area is formed separately and integrity tested separately before final assembly. The first area is slid into the inside of the second area and then the two endcaps are either bonded to each, bonded to a third overall endcap or overmolded by a third endcap.

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