Patent US4431541A successfully refreshed from Google Patents.
US4431541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular filter device
Assignee: Individual
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Filing: 1982-08-25
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Granted: 1984-02-14
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Expires: 2002-08-25
Abstract
Abstract A circular filter having separated inlet and outlet compartments such that cheese whey or the like is pumped into the vessel, is forced across a filter screen, and the filtered whey is discharged downstream for further processing. This invention incorporates (1) two rotating showers to clean the filter and (2) an outlet valve which recycles filtered whey for additional filtering and cleaning.
Inventors
- 👤 Arleigh Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:40
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/018; B01D29/62; B01D29/64; B01D29/6438; B01D29/6446; B01D29/66; B01D29/68; B01D29/682; B01D29/88; B01D29/885; B01D29/90; B01D29/94; B01D29/945
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
151 words
A fluid filtering device comprising elements designed, dimensioned and arranged for treating high bulk slurries such as cheese whey including a housing having a bottom wall, an upstanding wall disposed therearound, and a centrally disposed passageway; a sloping screen disposed between said passageway and said upstanding wall; a fluid inlet means disposed adjacent to said screen and causing said fluid to move thereover; at least two discharge outlets disposed in said bottom wall; shower means including a rotatable shower manifold disposed above said screen and directing fluid thereagainst; and a second rotatable shower manifold positioned beneath said screen and directing fluid upwardly thereagainst; and means for rotating said shower manifold whereby solid laden fluid is introduced into said inlet and caused to pass over said screen causing the heavier solids to move toward the central passageway for discharge, with the lighter solids being carried by the fluid through said discharge outlets.
Claim 2
Dependent Claim
151 words
A fluid filtering device comprising elements designed, dimensioned and arranged for treating high bulk slurries such as cheese whey including a housing having a bottom wall, an upstanding wall disposed therearound, and a centrally disposed passageway; a sloping screen disposed between said passageway and said upstanding wall; a fluid inlet means disposed adjacent to said screen and causing said fluid to move thereover; at least two discharge outlets disposed in said bottom wall; shower means including a rotatable shower manifold disposed above said screen and directing fluid thereagainst; and a second rotatable shower manifold positioned beneath said screen and directing fluid upwardly thereagainst; and means for rotating said shower manifold whereby solid laden fluid is introduced into said inlet and caused to pass over said screen causing the heavier solids to move toward the central passageway for discharge, with the lighter solids being carried by the fluid through said discharge outlets.
Claim 3
Dependent Claim
28 words
The fluid filtering device of claim 1 including a second upstanding wall disposed near the first upstanding wall, with said fluid inlet means therebetween, directing fluid circumferentially therearound.
Claim 4
Dependent Claim
21 words
The fluid filtering device of claim 2 wherein discharge from one of said outlets is returned to said rotating shower means.
Claim 5
Dependent Claim
24 words
The fluid filtering device of claim 3 wherein the bottom wall slopes downwardly toward said central passageway and is substantially parallel to said screen.
Claim 6
Dependent Claim
20 words
The fluid filtering device of claim 4 wherein the central passageway is a conduit pipe disposed centrally of said bottom.
Claim 7
Dependent Claim
21 words
The fluid filtering device of claim 1 wherein the shower manifolds are nested one below the other on a common shaft.
Claim 8
Dependent Claim
21 words
The fluid filtering device of claim 4 wherein the shower manifolds are disposed within the confines of the second upstanding wall.
Claim 9
Dependent Claim
31 words
The fluid filtering device of claim 1 wherein the housing is circular in cross-section and the solid-laden fluid is caused to be discharged about the perimeter and downwardly over the screen.
Claim 10
Dependent Claim
11 words
The fluid filtering device of claim 8 which includes a lid.
Claim 11
Dependent Claim
11 words
The fluid filtering device of claim 1 which includes a lid.
Claim 12
Dependent Claim
25 words
The fluid filtering device of claim 1 in which the shower manifolds are attached to a central tube by means of conventional quick release connections.
Claim 13
Dependent Claim
13 words
The filtering fluid device of claim 1 which includes legs supporting said housing.
Claim 14
Dependent Claim
24 words
The fluid filtering device of claim 1 which includes said top shower manifold connected to bottom shower manifold by means of a central tube.
Claim 15
Dependent Claim
26 words
The fluid filtering device of claim 1 including a bottom shower manifold having a conventional quick release connection attaching said manifold to a centrally located tube.
Claim 16
Dependent Claim
11 words
The fluid filtering device of claim 1 including a removable filter.
Claim 17
Dependent Claim
19 words
The fluid filtering device of claim 1 wherein the shower manifolds are driven by independent rotation and liquid means.
References Cited (Backward Citations)
US3112263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |