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US 5,308,483 AGranted
Microporous filtration funnel assembly
AssigneeGelman Sciences, Inc.
InventorsEric Sklar, Tod Borton
Life of this patent
Estimating the term…
Abstract
An in-line filter assembly is provided of a type having a housing divided into inlet and outlet chambers by a filter membrane having its periphery fluid-flow-sealed within the housing, the filter being readily disassemblable so that the filter membrane can be removed for identification or analysis of the material filtered from the fluid during use of the filter.
Claims15
A filtration funnel assembly comprising an open-ended upper body or reservoir for receiving liquid to be filtered and a lower body or base adapted to telescopically engage with a disengage from said upper body;
- said upper body having a first rim portion defining an internal shoulder and a second rim portion defining an external shoulder having an inner wall surface;
- said lower body serving as a conduit for leak-proof axial flow of filtered liquid therethrough comprising an outer wall or shell having an upper rim portion that is telescopically engaged between the internal and external shoulders of said upper body, a transverse filter support connected to said lower body a filter pad supported on said filter support with an annular gasket around said pad, and a filter membrane located on said filter pad;
- and
- the rim portion of said external shoulder having locking slot means and said outer wall having tab means with radially outward projection means that forms a lock fit with the locking slot means when the upper and lower bodies are aligned in telescopic engagement.
1 more element
Dependencies are inferred from the claim text.