US3841489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid filter
Assignee: RL Kuss and Co Inc
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Filing: 1973-05-02
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Granted: 1974-10-15
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Expires: 1993-05-02
Abstract
Abstract The invention is a fluid filter for use in a fuel line such as in an automobile. In its various embodiments, the filter employs a magnet which intercepts magnetic particles from the flowing fluid and a nylon mesh which screens out remaining foreign particles. In one embodiment, the magnet is an elongated ferrite loaded nylon shape with a cone-shaped deflector nose and a tapered downstream portion which extends into the cylinder defined by the nylon mesh. The magnet is snapped into place in the upstream end of an integrally molded nylon body which includes the nylon mesh. In another embodiment, the magnet is a compression-molded phenolic-ferritic snap-in disc with coneshaped deflector nose positioned at the upstream end of a similar nylon body. A third embodiment employs a ceramic disc magnet retained in the upstream end of a nylon body substantially similar to that of the first two embodiments. In a fourth embodiment the magnet is riveted to the upstream end of the nylon body. In all embodiments, a raised dam-like rim may be provided at the base of the magnet''s nose to prevent the washing away of particles which have been attracted to the magnet.
Inventors
- 👤 J Combest
- 👤 R Kuss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D35/06; F; F02; F02M; F02M27/00; F02M27/04; F02M27/045; F02M37/00; F02M37/22; F02M37/32; F02M37/34; F02M37/42; F02M37/52; B01D2201/00; B01D2201/40; B01D2201/4084
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
87 words
A fluid filter comprising a case, said case defining an upstream inlet fitting and a downstream outlet fitting, first filtering means within said case for capturing foreign magnetic particles within a flowing fluid in the line, second filtering means for capturing other foreign particles within the fluid, means integral with said first filtering means for deflecting the fluid from an axial path through said inlet radially outwardly toward said second filtering means, and structural means for retaining said first and second filtering means together within said case.
Claim 2
Dependent Claim
87 words
A fluid filter comprising a case, said case defining an upstream inlet fitting and a downstream outlet fitting, first filtering means within said case for capturing foreign magnetic particles within a flowing fluid in the line, second filtering means for capturing other foreign particles within the fluid, means integral with said first filtering means for deflecting the fluid from an axial path through said inlet radially outwardly toward said second filtering means, and structural means for retaining said first and second filtering means together within said case.
Claim 3
Dependent Claim
23 words
A fluid filter as described in claim 1 wherein said first filtering means comprises a molded magnet of nylon and a ferritic material.
Claim 4
Dependent Claim
45 words
A fluid filter as described in claim 1 wherein said structural means comprises a seat for supporting said first filtering means, a gasket flange tightly crimped within said case, and frame members connected to said seat and said flange and supporting said second filtering means.
Claim 5
Dependent Claim
28 words
A fluid filter as described in claim 3 wherein said seat includes means for preventing the washing away of the filtered magnetic particles from said first filtering means.
Claim 6
Dependent Claim
32 words
A fluid filter as described in claim 3 wherein said seat, said frame members, said gasket flange and said second filtering means define an integrally molded nylon body of generally cylindrical shape.
Claim 7
Dependent Claim
20 words
A fluid filter as described in claim 2 wherein said magnet comprises a nose portion and an elongate tail portion.
Claim 8
Dependent Claim
43 words
A fluid filter as described in claim 5 wherein said first filtering means comprises a nose portion and an elongate tail portion extending into said nylon body and substantially reducing the fluid capacity of said fluid filter downstream of said second filtering means.
Claim 9
Dependent Claim
15 words
A fluid filter as described in clAim 7 wherein said nose portion is conically shaped.
Claim 10
Dependent Claim
21 words
A fluid filter as described in claim 7 wherein said second filtering means comprises a nylon mesh of predetermined opening size.
Claim 11
Dependent Claim
25 words
A fluid filter as described in claim 7 wherein said first filtering means comprises a magnet having opposite polarity on said nose and tail portions.
Claim 12
Dependent Claim
28 words
A fluid filter as described in claim 7 wherein said first filtering means and said seat include means for removably retaining said first filtering means within said seat.
Claim 13
Dependent Claim
22 words
A fluid filter according to claim 1 wherein said first filtering means comprises a disc magnet of phenolic material containing ferritic particles.
Claim 14
Dependent Claim
31 words
A fluid filter according to claim 12 wherein said structural means comprises a seat for said magnet, a gasket flange, and frame members connected to said gasket flange and said seat.
Claim 15
Dependent Claim
19 words
A fluid filter according to claim 13 which further includes means for removably retaining said magnet within said seat.
Claim 16
Dependent Claim
34 words
A fluid filter according to claim 13 wherein said second filtering means comprises a nylon mesh of predetermined mesh opening size and said mesh, seat, frame members and gasket flange are integrally molded together.
Claim 17
Dependent Claim
20 words
A fluid filter according to claim 13 wherein said seat extends slightly upstream of the outer periphery of said magnet.
Claim 18
Dependent Claim
17 words
A fluid filter according to claim 1 wherein said first filtering means comprises a generally disc-shaped magnet.
Claim 19
Dependent Claim
21 words
A fluid filter according to claim 17 wherein said second filtering means comprises a nylon mesh of predetermined mesh opening size.
Claim 20
Dependent Claim
39 words
A fluid filter according to claim 17 wherein said structural means comprises a seat for said magnet, frame members connected to said seat and supporting said mesh, and a gasket flange connected to said frame members and said mesh.
Claim 21
Dependent Claim
20 words
A fluid filter according to claim 19 wherein said seat extends slightly upstream of the outer periphery of said magnet.
Claim 22
Dependent Claim
23 words
A fluid filter according to claim 17 wherein said magnet is of a ceramic material and has two opposed faces which are identical.
Claim 23
Dependent Claim
17 words
A fluid filter according to claim 19 wherein said gasket flange is tightly retained within said case.
Claim 24
Dependent Claim
15 words
A fluid filter according to claim 19 wherein said magnet is riveted to said seat.
Claim 25
Dependent Claim
15 words
A fluid filter according to claim 20 wherein said magnet is riveted to said seat.
Claim 26
Dependent Claim
17 words
A fluid filter according to claim 24 wherein said magnet is generally of a truncated conical shape.
Claim 27
Dependent Claim
43 words
A fluid filter according to claim 19 wherein said magnet has an axial bore therethrough and said seat includes a transverse end portion and an axial projection, whereby said axial projection extends through said axial bore to retain said magnet on said seat.
Claim 28
Dependent Claim
26 words
A fluid filter according to claim 17 wherein said magnet is generally of a truncated conical shape with a fluid damming rim at its outer periphery.
Claim 29
Dependent Claim
114 words
A fluid filter comprising an elongate case including a pair of opposed fittings providing fluid openings therethrough; a first magnetic filtering means within said case adjacent one of said fittings for capturing foreign magnetic particles within the flowing fluid and deflecting the fluid radially outwardly within said case, a filtering mesh adjacent said first magnetic filtering means for capturing other foreign particles within the fluid, a second magnetic filtering means downstream of said mesh for capturing remaining magnetic particles within the fluid and for limiting the fluid volume of said case, and a gasket flange connected to said mesh in opposed relationship to said first magnetic filtering means and tightly retained within said case.
Claim 30
Dependent Claim
114 words
A fluid filter comprising an elongate case including a pair of opposed fittings providing fluid openings therethrough; a first magnetic filtering means within said case adjacent one of said fittings for capturing foreign magnetic particles within the flowing fluid and deflecting the fluid radially outwardly within said case, a filtering mesh adjacent said first magnetic filtering means for capturing other foreign particles within the fluid, a second magnetic filtering means downstream of said mesh for capturing remaining magnetic particles within the fluid and for limiting the fluid volume of said case, and a gasket flange connected to said mesh in opposed relationship to said first magnetic filtering means and tightly retained within said case.
Claim 31
Dependent Claim
26 words
A fluid filter according to claim 28 wherein said first and second magnetic filtering means comprise an integrally molded magnet of nylon and a ferritic material.
Claim 32
Dependent Claim
37 words
In a fluid filter including a filtering mesh, a magnetic filtering element having two identical faces but with opposite polarity, each said face being generally the shape of a tRuncated cone situated on a flat circular plane.
Claim 33
Dependent Claim
37 words
In a fluid filter including a filtering mesh, a magnetic filtering element having two identical faces but with opposite polarity, each said face being generally the shape of a tRuncated cone situated on a flat circular plane.
Claim 34
Dependent Claim
65 words
In a fluid filter including a filtering mesh, a magnetic filtering element according to claim 30 wherein said filtering element defines a first filtering means of said fluid filter, and peripherally adjacent to and downstream from said filtering element is a damming means whereby magnetic foreign particles attracted to said filtering element are retained by said damming means and prevented from reaching said filtering mesh.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |