US4289630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter cake removal method and apparatus
Assignee: Industrial Filter and Pump Manufacturing Co
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Filing: 1979-12-10
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Granted: 1981-09-15
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Expires: 1999-12-10
Abstract
Abstract The exhaust manifold in a pressure filter is spring mounted and vibrated along a vertical axis to dislodge filter cakes from filter tubes suspended from the manifold.
Inventors
- 👤 Henry Schmidt, Jr.
- 👤 Allen E. Cederholm
- 👤 James F. Zievers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:52
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/114; B01D29/50; B01D29/52; B01D29/62; B01D29/70; B01D29/72; B01D29/76; B01D29/78; B01D29/80; B01D29/84; B01D29/843; B01D2201/00; B01D2201/04; B01D2201/0469; B01D2201/0484; B01D2201/28; B01D2201/287; B01D37/00; B01D37/02
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
150 words
A filter, comprising in combination a filter tank enclosing a filter chamber, a liquid inlet opening into said tank through which a filtrate may be introduced into said chamber, a rigid, generally planar tubular header manifold having a passageway therein, spring means supporting said manifold in said chamber, an effluent outlet from said tank, conduit means connecting said passageway to said outlet, a plurality of filter elements each having a perforate filter media overlying an internal cavity therein, said filter elements being fixedly mounted at one end to said header with said cavities being in communication with said passageway, said filter elements being in mutually parallel relationship, the outer surfaces of said filter media extending in a direction perpendicular to the plane of said header manifold and vibratory impactor means connected to said manifold for impacting said manifold in a direction parallel to the outer surface of said filter media.
Claim 2
Dependent Claim
150 words
A filter, comprising in combination a filter tank enclosing a filter chamber, a liquid inlet opening into said tank through which a filtrate may be introduced into said chamber, a rigid, generally planar tubular header manifold having a passageway therein, spring means supporting said manifold in said chamber, an effluent outlet from said tank, conduit means connecting said passageway to said outlet, a plurality of filter elements each having a perforate filter media overlying an internal cavity therein, said filter elements being fixedly mounted at one end to said header with said cavities being in communication with said passageway, said filter elements being in mutually parallel relationship, the outer surfaces of said filter media extending in a direction perpendicular to the plane of said header manifold and vibratory impactor means connected to said manifold for impacting said manifold in a direction parallel to the outer surface of said filter media.
Claim 3
Dependent Claim
18 words
A filter according to claim 1 wherein said filter elements are tubular and are suspended from said manifold.
Claim 4
Dependent Claim
15 words
A filter according to claim 1 wherein said vibratory means is mounted within said tank.
Claim 5
Dependent Claim
22 words
A filter according to claim 3 wherein said vibratory means imparts vertical shock waves to said manifold and to said filter elements.
Claim 6
Dependent Claim
15 words
A filter according to claim 4 wherein said vibratory means is supported by said manifold.
Claim 7
Dependent Claim
15 words
A filter according to claim 1 wherein said conduit means comprises a flexible, tubular member.
Claim 8
Dependent Claim
27 words
A filter according to claim 1 wherein said conduit means comprises first and second telescopically interfitted tubular members respectively connected to said manifold and to said outlet.
Claim 9
Independent Claim
82 words
A method of removing a filter cake from the surface of a filter element mounted in a filter tank on a rigid outlet manifold, comprising the steps of mounting said manifold in said tank on springs to permit movement of said manifold relative to said tank, and repeatedly impacting said manifold in a direction parallel to said surface of said filter element to exert a shear force between said filter element and said cake to separate said cake from said filter element.
Claim 10
Independent Claim
82 words
A method of removing a filter cake from the surface of a filter element mounted in a filter tank on a rigid outlet manifold, comprising the steps of mounting said manifold in said tank on springs to permit movement of said manifold relative to said tank, and repeatedly impacting said manifold in a direction parallel to said surface of said filter element to exert a shear force between said filter element and said cake to separate said cake from said filter element.
Claim 11
Dependent Claim
28 words
A method according to claim 8 wherein said step of imparting vibrational shock waves to said manifold is carried out by mounting a vibratory impactor on said manifold.
Claim 12
Dependent Claim
95 words
A filter, comprising a sealable filter tank enclosing a filter chamber, a liquid inlet to said tank, an outlet manifold disposed in said tank, said outlet having a passageway therein, a plurality of filter elements each having a cavity therein at least partially enclosed by perforate means, said filter elements being disposed below said outlet manifold with said cavities being in communication with said passageway in said outlet manifold, a liquid outlet from said tank located below the bottom of said manifold, and conduit means connecting said liquid outlet to the bottom of said manifold.
Claim 13
Dependent Claim
95 words
A filter, comprising a sealable filter tank enclosing a filter chamber, a liquid inlet to said tank, an outlet manifold disposed in said tank, said outlet having a passageway therein, a plurality of filter elements each having a cavity therein at least partially enclosed by perforate means, said filter elements being disposed below said outlet manifold with said cavities being in communication with said passageway in said outlet manifold, a liquid outlet from said tank located below the bottom of said manifold, and conduit means connecting said liquid outlet to the bottom of said manifold.
Claim 14
Dependent Claim
28 words
A filter according to claim 10 comprising first spring means supporting said manifold in said tank, and second spring means urging said manifold toward said first spring means.
Claim 15
Dependent Claim
28 words
A filter according to claim 11 comprising a vibratory impactor disposed above said manifold, and said second spring means urging said impactor into contacting relationship with said manifold.
Claim 16
Dependent Claim
19 words
A filter according to claim 12 wherein said vibratory impactor is at least partially located externally of said tank.
Claim 17
Dependent Claim
20 words
A filter according to claim 13 comprising means for adjusting the relative forces exerted by said springs on said manifold.
Claim 18
Dependent Claim
40 words
A filter according to claim 14 wherein said vibratory impactor comprises a vertically disposed rigid bar extending into said chamber through an opening in the top of said tank, and a hermetic seal provided between said bar and said tank.
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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) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |