Particulate filter for oil
AssigneeShawndra Products, Inc.
InventorGary Hunsinger
Life of this patent
Estimating the term…
Abstract
A multi-stage particulate filter, wherein the first stage of filtration comprises a coarse filter to remove the larger impurities. The second stage will remove the finer impurities from the liquid (oil) that have passed through the first stage (coarse filter). The first and second stage filter shall reside within a single housing. The housing will have both an inlet port for receiving the unfiltered fluid (oil) and an discharge port for passing the filtered fluid (oil) back into the system. The first stage, or coarse filter element has an opening adjacent the inlet, such that fluid entering through the inlet will first pass through the coarse filter element.
Claims20
A filter assembly for collecting particles incorporated in a liquid, comprising:
- a pre-filter for retaining coarse particles and allowing flow of a liquid;
- at least one secondary filter element of a finer porosity than said pre-filter for receiving said liquid from said pre-filter and further removing particles from said liquid;
- and said pre-filter is positioned within said filter assembly to allow continuing flow of said liquid to said secondary filter element upon a failure of said pre-filter while said liquid remains internal to said filter assembly.
A filter assembly for collecting particulate material incorporated in a liquid, comprising:
- a housing having an inlet port, an outlet port, and a body section;
- said body section further comprises a receiving region and a outlet region separated by a plate;
- said plate comprises at least one orifice for communication between said receiving region and said outlet region:
- said plate further comprises at least one particulate pre-filter element for retaining solids and allowing flow of a liquid, said pre-filter further comprising an orifice for receiving said liquid and mounted on said plate in said receiving region of said body section, wherein said orifice of said pre-filter is spaced a distance from said inlet port;
- at least one secondary particulate filter element of a finer porosity mounted thereto and above said orifice and in said receiving region of said body section.
A multi stage particulate filter with bypass capabilities internal to said particulate filter comprising:
- a first stage filter element and a second stage filter element;
- said first stage filter element configured for filtering coarse materials;
- said second stage filter element configured for filtering out fine materials;
- said first stage filter element further configured to allow for continued second stage filtering when said first stage filter element becomes clogged.
A multi stage particulate filter with bypass capabilities comprising:
- a first stage and a second stage;
- said first stage configured for filtering coarse materials and allowing for continued flow to said second stage upon clogging of first stage;
- and said second stage configured for filtering out fine materials.
Dependencies are inferred from the claim text.