Fluid filter system
AssigneeProducts Unlimited, Inc.
InventorsScott B. Beier, Rex A. Adams
Life of this patent
Estimating the term…
Abstract
The filter system for filtering particulate material from a generally unidirectional fluid stream comprises a first filter removably positioned in the fluid stream and a second filter removably positioned in the fluid stream downstream of the first filter. The first filter comprises a pre-filter and includes a layer of fluid-permeable material having a plurality of spaced-apart openings extending completely therethrough. The method of utilizing the fluid filter system of this invention is also disclosed and comprises the steps of: (1) removably positioning a first filter in the fluid stream; and (2) removably positioning a fluid-permeable second filter in the fluid stream downstream of the first filter.
Claims8
A method of filtering particulate material from a generally unidirectional fluid stream, comprising the steps of:
- removably positioning a plurality of first filters in the fluid stream;
- and removably positioning a fluid-permeable second filter in the fluid stream downstream of the first filters;
- said first filters being a pre-filter and comprising a layer of fluid-permeable material having an intake side and a discharge side, said layer having a plurality of spaced-apart openings extending completely therethrough.
A method of filtering particulate material from a generally unidirectional fluid stream, comprising the steps of:
- removably positioning a first filter in the fluid stream;
- and removably positioning a fluid-permeable second filter in the fluid stream downstream of the first filter;
- said first filter being a pre-filter and comprising a layer of fluid-permeable material having an intake side and a discharge side, said layer having a plurality of spaced-apart openings extending completely therethrough;
- said second filter comprising a layer of fluid-permeable material having an intake side and a discharge side and wherein said layer has a plurality of spaced-apart openings extending thereinto from its intake side which extend through less than the entire thickness thereof.
A filter system for filtering particulate material from a generally unidirectional fluid stream, comprising:
- a plurality of first filters removably positioned in the fluid stream;
- and a second filter removably positioned in the fluid stream downstream of said first filters;
- said first filters being pre-filters and comprising a layer of fluid-permeable material having an intake side and a discharge side, said layer having a plurality of spaced-apart openings extending completely therethrough.
A filter system for filtering particulate material from a generally unidirectional fluid stream, comprising:
- a first filter removably positioned in the fluid stream;
- and a second filter removably positioned in the fluid stream downstream of said first filter;
- said first filter being a pre-filter and comprising a layer of fluid-permeable material having an intake side and a discharge side, said layer having a plurality of spaced-apart openings extending completely therethrough;
- said second filter comprising a layer of fluid-permeable material having an intake side and a discharge side and wherein said layer has a plurality of spaced-apart openings extending thereinto from its intake side which extend through less than the entire thickness thereof.
Dependencies are inferred from the claim text.