Corrosion inhibiting coolant filter
AssigneeLong Manufacturing Ltd.
InventorsBrian E. Cheadle, Richard J. Rusiniak
Life of this patent
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Abstract
A filter device for an engine coolant includes a housing with an inlet for inflow of coolant and an outlet for outflow; a flow path extends between the inlet and outlet, a filter in the flow path filters the coolant; a dosage of corrosion inhibitor is disposed in the housing, corrosion inibitor being separated from the flow path by a separating means exposed to coolant in the flow path; the separating means disintegrates by corrosion when coolant in the flow path has a corrosiveness above a predetermined level thereby releasing the dosage of corrosion inhibitor into the coolant.
Claims18
A filter device for an engine coolant comprising,
- a housing having inlet means for inflow of a liquid coolant into said housing and outlet means for outflow of coolant from said housing,
- a flow path in said housing for flow of coolant from said inlet means to said outlet means,
- a filter means in said flow path effective to filter the coolant,
- a container of corrosion inhibitor for said coolant in said housing, said container being effective to maintain said corrosion inhibitor isolated from and in non-contacting relationship with coolant in said flow path and having a portion with a surface exposed to said flow path, at least part of said portion being adapted to disintegrate by corroding when coolant in said flow path has a corrosiveness above a predetermined level, to release corrosion inhibitor from said container into said flow path.
A filter element for an engine coolant comprising,
- a container of corrosion inhibitor for engine coolant,
- a filter means for said coolant,
- a flow path for said coolant extending through said filter means, a portion of said container being exposed to said flow path, said portion having an outer surface exposed to said flow path and an inner surface exposed to said corrosion inhibitor, at least part of said portion being adapted to disintegrate by corroding when coolant in said flow path has a content of corrosion inhibitor below a predetermined level, to release corrosion inhibitor from said container into said flow path.
A cooling system for engine coolant having a filter device incorporated therein the filter device comprising,
- a housing having inlet means for inflow of a liquid coolant into said housing and outlet means for outflow of coolant from said housing,
- a flow path in said housing for flow of coolant from said inlet means to said outlet means,
- a filter means in said flow path effective to filter the coolant,
- a container of corrosion inhibitor for said coolant in said housing, said container being effective to maintain said corrosion inhibitor isolated from and in non-contacting relationship with coolant in said flow path and having a portion with a surface exposed to said flow path, at least part of said portion being adapted to disintegrate by corroding when coolant in said flow path has a corrosiveness above a predetermined level, to release corrosion inhibitor from said container into said flow path.
A method of treating a flowing engine coolant comprising,
- providing a housing having an inlet for inflow of a liquid coolant and an outlet for outflow of the coolant, flowing said coolant along a flow path from said inlet to said outlet,
- filtering said coolant in said flow path, and
- contacting the flowing coolant in said flow path with separating means, said separating means separating said flowing coolant from a dosage of corrosion inhibitor for the coolant, at least a part of said separating means being adapted to disintegrate by corroding when coolant in said flow path has a corrosiveness above a predetermined level,
- flowing said coolant in contact with said separating means,
- allowing said coolant to increase in corrosiveness to said predetermined level, and
- allowing said separating means to disintegrate to release said dosage of corrosion inhibitor into said coolant.
Dependencies are inferred from the claim text.