Patent US3754659A successfully refreshed from Google Patents.
US3754659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sluice means and rotatable nozzles
Assignee: Ametek Inc
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Filing: 1971-06-04
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Granted: 1973-08-28
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Expires: 1991-06-04
Abstract
Abstract A horizontally disposed filter has a plurality of filter leaf elements spaced along its axis with a sluicing assembly provided for sluicing filter cake from the leaves. The assembly includes a pair of pivotally mounted crank-shaped arms whose outer portions are positioned outwardly of the peripheral edges of the filter leaf elements and on opposite sides thereof. Each arm pivots through an angle of about 80* and linkage or cable means are provided to pivot nozzles positioned on the outer portions of the arms. The nozzles pivot through angles of about 155* so that a sluicing liquid sprayed from the nozzles is distributed over the surfaces of the filter leaf elements. While the sluice arms pivot back and forth through their angles, the nozzles are concurrently pivoted with respect to the sluice arms.
Inventors
- 👤 K Anderson
- 👤 J Krynski
- 👤 W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:15
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/39; B01D29/62; B01D29/64; B01D29/6438; B01D29/6446; B01D29/96
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
144 words
In a filter having a plurality of transverse filter leaf elements spaced along the axis of the filter, a sluicing assembly comprising crank-shaped sluice arm means coextensive with the filter leaf elements and mounted for pivotal movement about an axis parallel to the axis of the tank, said sluice arm means being hollow and connected to a source of sluicing fluid and having a rotatable longitudinally extending portion parallel to the axis of the filter, a plurality of spray nozzles on said lontitudinally extending portion of said sluice arm means positioned adjacent opposed faces of the filter leaf elements, and means for rotating said longitudinal section and said nozzles thereon concurrently with the pivoting of said sluice arm means so that the sluicing fluid sprayed from the nozzles is distributed relative to cake on the filter leaf elements so as to remove the same.
Claim 2
Dependent Claim
144 words
In a filter having a plurality of transverse filter leaf elements spaced along the axis of the filter, a sluicing assembly comprising crank-shaped sluice arm means coextensive with the filter leaf elements and mounted for pivotal movement about an axis parallel to the axis of the tank, said sluice arm means being hollow and connected to a source of sluicing fluid and having a rotatable longitudinally extending portion parallel to the axis of the filter, a plurality of spray nozzles on said lontitudinally extending portion of said sluice arm means positioned adjacent opposed faces of the filter leaf elements, and means for rotating said longitudinal section and said nozzles thereon concurrently with the pivoting of said sluice arm means so that the sluicing fluid sprayed from the nozzles is distributed relative to cake on the filter leaf elements so as to remove the same.
Claim 3
Dependent Claim
31 words
In a filter as claimed in claim 1 wherein a pair of said sluice arm means are positioned adjacent each other and pivot on opposite sides of said filter leaf elements.
Claim 4
Dependent Claim
20 words
In a filter as claimed in claim 2 wherein the sluice arm means are oscillated in a bird wing motion.
Claim 5
Dependent Claim
30 words
In a filter as claimed in claim 2 wherein the pivot axes of said sluice arm means are on a plane intersecting the longitudinal axes of the filter leaf elements.
Claim 6
Dependent Claim
73 words
In a filter as claimed in claim 1 wherein said sluice arm means is substantially U-shaped with the inner ends of the legs thereof being pivotally mounted, said sluice arm means having a pair of legs positioned at opposite ends of said plurality of filter leaf elements and said longitudinally extending portion interconnecting the outer ends of said legs, said portion being located outwardly of the peripheral edges of said filter leaf elements.
Claim 7
Dependent Claim
21 words
In a filter as claimed in claim 5 wherein each of said spray nozzles pivots through an angle of about 155*.
Claim 8
Dependent Claim
19 words
In a filter as claimed in claim 1 wherein said means for rotating said longitudinal section comprises linkage means.
Claim 9
Dependent Claim
19 words
In a filter as claimed in claim 1 wherein said means for rotating said longitudinal section comprises cable means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |