EP0273720A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Corrosion inhibiting coolant filter
Assignee: Dana Canada Corp
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Filing: 1987-12-23
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Granted: —
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Expires: 2007-12-23
Abstract
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 inhibitor 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.
Inventors
- 👤 Brian Edward Cheadle
- 👤 Richard Joseph Rusiniak
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 15:28
CPC Classifications
B; B60; B60K; B60K11/00; C; C23; C23F; C23F11/00; B01; B01D; B01D37/00; B01D37/02; B01D37/025; F; F01; F01P; F01P11/00; F01P11/06; F01P2011/061; F01P2011/066; F01P2011/068
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
129 words
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 having a portion exposed to said flow path, said portion separating said flow path from said corrosion inhibitor, 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.
Claim 2
Dependent Claim
129 words
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 having a portion exposed to said flow path, said portion separating said flow path from said corrosion inhibitor, 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.
Claim 3
Dependent Claim
33 words
A filter device according to claim 1, wherein said portion comprises a partition and said container has a plurality of compartments separated by partitions, each compartment containing a dosage of said corrosion inhibitor.
Claim 4
Dependent Claim
19 words
A filter device according to claim 2, wherein said filter means comprises a tubular filter member surrounding said container.
Claim 5
Dependent Claim
67 words
A filter device according to claim 3, wherein said container has a tubular wall, said partitions extending inwardly of said wall in opposed spaced apart relationship to define said compartments, said partitions being disintegratible by corroding when contacted by coolant in said flow path having said corrosiveness above said predetermined level to release corrosion inhibitor from said compartments, said partitions being preferentially corrodible relative to said wall.
Claim 6
Dependent Claim
18 words
A filter device according to claim 4, wherein said container is snugly received in said tubular filter member.
Claim 7
Dependent Claim
28 words
A filter device according to claim 4, wherein said tubular wall has a plurality of spaced apart apertures defined therethrough, said apertures being disposed in said flow path.
Claim 8
Dependent Claim
25 words
A filter device according to claim 6, wherein said apertures are disposed in said flow path downstream of said filter member in said flow path.
Claim 9
Dependent Claim
25 words
A filter device according to claim 6, wherein said apertures are disposed in said flow path upstream of said filter member in said flow path.
Claim 10
Dependent Claim
103 words
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.
Claim 11
Dependent Claim
103 words
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.
Claim 12
Dependent Claim
33 words
A filter element according to claim 9, wherein said portion comprises a partition and said container has a plurality of compartments separated by partitions, each compartment containing a dosage of said corrosion inhibitor.
Claim 13
Dependent Claim
19 words
A filter element according to claim 10, wherein said filter means comprises a tubular filter sleeve surrounding said container.
Claim 14
Dependent Claim
69 words
A filter element according to claim 11, wherein said container has a tubular wall and said partitions extend inwardly of said wall in opposed spaced apart relationship to define said compartments, said partitions being rapidly disintegratible by corroding when contacted by coolant in said flow path having said corrosiveness above said predetermined level, to release corrosion inhibitor from said compartments, said partitions being preferentially corrodible relative to said wall.
Claim 15
Dependent Claim
25 words
A filter element according to claim 9, 10 or 12, wherein said flow path comprises a plurality of spaced apart apertures defined in said container.
Claim 16
Dependent Claim
17 words
A cooling system for engine coolant having a filter device as defined in claim 1, incorporated therein.
Claim 17
Dependent Claim
80 words
A cooling system according to claim 14, wherein said system comprises a heat exchanger, an inflow line for flow of heated coolant into said heat exchanger and an outflow line for flow of cooled coolant from said heat exchanger, said filter device being incorporated in one of said lines so that at least a portion of flowing coolant is bled off into said inlet means, passed along said flow path and returned to said one line through said outlet means.
Claim 18
Independent Claim
140 words
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 corrosiveness to said predetermined level, and allowing said separating means to disintegrate to release said dosage of corrosion inhibitor into said coolant.
Claim 19
Independent Claim
140 words
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 corrosiveness to said predetermined level, and allowing said separating means to disintegrate to release said dosage of corrosion inhibitor into said coolant.
Claim 20
Dependent Claim
14 words
A method according to claim 16, wherein said filtering is upstream of said contacting.
Claim 21
Dependent Claim
14 words
A method according to claim 16, wherein said filtering is downstream of said contacting.
Claim 22
Independent Claim
77 words
A method of producing a container of corrosion inhibitor comprising: a) providing a container member having a tubular wall, b) compacting a dosage of particulate corrosion inhibitor material within said container member, c) introducing a partition member into said container member, said partition member extending between opposed sides of said tubular wall, in facing relationship with dosage, d) developing a magnetic force forming pressure to engage said wall and said partition member to produce a joint therebetween.
Claim 23
Independent Claim
77 words
A method of producing a container of corrosion inhibitor comprising: a) providing a container member having a tubular wall, b) compacting a dosage of particulate corrosion inhibitor material within said container member, c) introducing a partition member into said container member, said partition member extending between opposed sides of said tubular wall, in facing relationship with dosage, d) developing a magnetic force forming pressure to engage said wall and said partition member to produce a joint therebetween.
Claim 24
Dependent Claim
51 words
A method according to claim 19, wherein following step c), steps b) and c) are repeated sequentially at least once prior to step d) to produce a plurality of the compacted blocks corresponding to the number of repetitions of step b), each said block being separated by a said partition member.
Claim 25
Dependent Claim
24 words
A method according to claim 19, wherein said dosage is compacted against a support surface to form a compacted block of said particulate material.
Claim 26
Dependent Claim
20 words
A method according to claim 19, wherein said support surface is defined by a closed end of said container member.
Claim 27
Dependent Claim
33 words
A method according to claim 20, wherein dosages are compacted against a support surface to form compacted blocks of said material, said surface being defined by a closed end of said container member.
Claim 28
Dependent Claim
20 words
A method according to claim 19, 21 or 22, wherein said joint electrically connects said wall and said partition member.
Claim 29
Dependent Claim
35 words
A method according to claim 20 or 23, wherein a said joint is produced between each of the partition members and said wall, each said joint electrically connecting said wall and a said partition member.
Claim 30
Dependent Claim
36 words
A method according to claim 19, 21 or 22, wherein said tubular wall has a copper surface and said partition member comprises a magnesium alloy, and said joint electrically connects said wall and said partition member.
Claim 31
Dependent Claim
52 words
A method according to claim 20 or 23, wherein said tubular wall has a copper surface and each of the partition members comprises a magnesium alloy, a said joint being produced between each of the partition members and said wall, each said joint electrically connecting said wall and a said partition member.
Claim 32
Independent Claim
71 words
A method of producing a container of corrosion inhibitor comprising: providing a container member having a tubular wall with a dosage of particulate corrosion inhibitor material and a partition member therein, said partition member extending between opposed sides of said tubular wall, compacting said particulate material within said container member, and developing a magnetic force forming a pressure to engage said wall and said partition member to produce a joint therebetween.
Claim 33
Independent Claim
71 words
A method of producing a container of corrosion inhibitor comprising: providing a container member having a tubular wall with a dosage of particulate corrosion inhibitor material and a partition member therein, said partition member extending between opposed sides of said tubular wall, compacting said particulate material within said container member, and developing a magnetic force forming a pressure to engage said wall and said partition member to produce a joint therebetween.
Claim 34
Dependent Claim
93 words
A method according to claim 28, comprising providing a plurality of dosages of said material and a plurality of partition members within said tubular wall, adjacent dosages of said plurality of dosages being separated by a partition member of said plurality of members, each partition member extending between opposed sides of said tubular wall to form an assembly of dosages and partition members within said tubular wall, and said compacting is carried out to simultaneously compact said dosages to form a plurality of compacted blocks of said material separated by said partition members.
Claim 35
Dependent Claim
32 words
A method according to claim 29 a said joint being formed between each of said partition members and said wall, each said joint electrically connecting said wall and a said partition member.
Claim 36
Dependent Claim
24 words
A method according to claim 30, wherein said wall has a copper surface and each of said partition members is of a magnesium alloy.
References Cited (Backward Citations)
No citation records indexed.
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