Method for filtering a liquid
Assignee37Degree Filters, Inc.
InventorChristopher M. Hubbard
Life of this patent
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Abstract
An oil filter assembly is disclosed for a machine, such as an internal combustion engine, that has an oil output port and an oil input port. A mounting plate is fixed with an outer enclosure. The mounting plate is further adapted to conduct oil from the machine into a peripheral portion of the outer enclosure, and then returning oil from a central portion of the outer enclosure back to the machine. Oil may pass from the peripheral portion to the central portion through a primary filter having a first porosity. A pressure-actuated valve is fixed fluidly between the portions of the outer enclosure.
Claims12
A method for filtering a liquid, comprising:
- providing a filter assembly comprising (i) an outer enclosure comprising a peripheral portion and a central portion;
- (ii) a primary filter disposed within the outer enclosure such that a liquid in the peripheral portion passes across the primary filter into the central portion;
- (iii) a pressure-actuated valve disposed between the peripheral and central portions of the outer enclosure, said valve movable into an open position in response to a pressure differential;
- (iv) a secondary filter disposed within the primary filter and between the pressure-actuated valve and the central portion of the outer enclosure;
- and (v) a mounting plate to which the outer enclosure is removably fixed, the mounting plate adapted to conduct the liquid from an outlet port of an attached machine into the peripheral portion of the outer enclosure via a tapered conduit.
Dependencies are inferred from the claim text.