Patent US6971588B1 successfully refreshed from Google Patents.
US5098565A
Expired / Lapsed
US
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Filter apparatus
Assignee: Individual
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Filing: 1988-01-29
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Granted: 1992-03-24
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Expires: 2008-01-29
Abstract
Abstract A disk-type filter comprising a housing having an inlet connectable to an upstream pipe and an outlet connectable to a downstream pipe, and a stack of filter units disposed within said housing for separating solid particles from a fluid flowing between filter units in said stack of filter units from an upstream side of said stack of filter units to a downstream side thereof, characterized in that said stack of filter units includes a plurality of co-operating filter units defining a plurality of paired co-operating filter surfaces, including first and second surfaces each defining a plurality of fingers, said fingers defined by said first surface being arranged in registration with said fingers defined by said second surface, the exteriors of said fingers defined by said first and second surfaces communicating with either one of an upstream side and a downstream side and the interiors of said fingers defined by said first and second surfaces communicating with the other one of said upstream side or downstream side, spaces being defined in association with said fingers defined by said first and second surfaces and being disposed in registration so as to define channels, which permit particulate matter to become disengaged with said upstream side of said fingers defined by said first and second surfaces.
Inventors
- 👤 Mordeki Drori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:44
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/114; B01D29/13; B01D29/15; B01D29/21; B01D29/39; B01D29/44; B01D29/46; B01D29/62; B01D29/64; B01D29/6438; B01D29/6446; B01D29/6453
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
212 words
A disk-type filter comprising: a housing having an inlet connectable to an upstream pipe and an outlet connectable to a downstream pipe; and a stack of filter units disposed within said housing for separating solid particles from a fluid flowing between filter units in said stack of filter units from an upstream side of said stack of filter units to a downstream side thereof, characterized in that said stack of filter units includes a plurality of co-operating filter units defining a plurality of paired co-operating filter surfaces, including first and second surfaces each defining a plurality of fingers, said fingers defined by said first surface being arranged in registration with said fingers defined by said second surface, the exteriors of said fingers defined by said first and second surfaces communicating with either one of an upstream side and a downstream side and the interiors of said fingers defined by said first and second surfaces communicating with the other one of said upstream side or downstream side, spaces being defined in association with said fingers defined by said first and second surfaces and being disposed in registration so as to define channels, which permit particulate matter to become disengaged with said upstream side of said fingers defined by said first and second surfaces.
Claim 2
Dependent Claim
212 words
A disk-type filter comprising: a housing having an inlet connectable to an upstream pipe and an outlet connectable to a downstream pipe; and a stack of filter units disposed within said housing for separating solid particles from a fluid flowing between filter units in said stack of filter units from an upstream side of said stack of filter units to a downstream side thereof, characterized in that said stack of filter units includes a plurality of co-operating filter units defining a plurality of paired co-operating filter surfaces, including first and second surfaces each defining a plurality of fingers, said fingers defined by said first surface being arranged in registration with said fingers defined by said second surface, the exteriors of said fingers defined by said first and second surfaces communicating with either one of an upstream side and a downstream side and the interiors of said fingers defined by said first and second surfaces communicating with the other one of said upstream side or downstream side, spaces being defined in association with said fingers defined by said first and second surfaces and being disposed in registration so as to define channels, which permit particulate matter to become disengaged with said upstream side of said fingers defined by said first and second surfaces.
Claim 3
Dependent Claim
53 words
Apparatus according to claim 1 and wherein said fingers defined by said first and second surfaces each have formed thereon a pair of spaced, generally raised line portions separated by an interior area, said raised line portions on at least one of said first and second surfaces defining a plurality of spaced grooves.
Claim 4
Dependent Claim
60 words
Apparatus according to claim 2 and wherein said raised line portions on both of said first and second surfaces define a plurality of spaced grooves, said plurality of grooves of said second surface facing said plurality of grooves of said first surface, said grooves of said second surface being mutually skewed with respect to said grooves of said first surface.
Claim 5
Dependent Claim
25 words
Apparatus according to claim 3 and wherein said pluralities of spaced grooves defined by said first and second surfaces define an enhanced depth filtering pathway.
Claim 6
Dependent Claim
24 words
Apparatus according to claim 2 and wherein said raised line portions define a continuous surface which separates the upstream side from the downstream side.
Claim 7
Dependent Claim
35 words
Apparatus according to claim 2 and wherein said raised line portions and grooves of said first and second surfaces define multiple branched paths for traversal of fluid from the upstream side to the downstream side.
Claim 8
Dependent Claim
50 words
Apparatus according to claim 2 and wherein there is provided a planar divider at said interior area of each of said fingers, such that when a plurality of filter units are disposed in registration, said line portions and said planar dividers define a multiplicity of backflow chambers for enhanced backflowing.
Claim 9
Dependent Claim
25 words
Apparatus according to claim 2 and wherein said raised line portions are of generally uniform thickness, thus providing a filtering barrier of generally uniform characteristics.
Claim 10
Dependent Claim
15 words
Apparatus according to claim 2 and wherein flushing chambers are defined between said line portions.
Claim 11
Dependent Claim
28 words
Apparatus according to claim 9 and wherein said flushing chambers are defined by planar dividers recessed with respect to said line portions on said first and second surfaces.
Claim 12
Dependent Claim
27 words
Apparatus according to claim 2 and wherein said line portions are formed in a pointed configuration facing the downstream side, thereby to minimize deflection of backflush streams.
Claim 13
Dependent Claim
19 words
Apparatus according to claim 1 and also comprising a filter aid operatively associated with said stack of filter units.
Claim 14
Dependent Claim
20 words
Apparatus according to claim 12 and wherein said filter aid is selected from diatomaceous earth, activated carbon and filter cake.
Claim 15
Dependent Claim
44 words
Apparatus according to claim 12 and wherein said filter aid is disposed upstream of said first and second surfaces, whereby in the absence of upstream to downstream fluid flow through said filter, said filter aid tends to disengage from said stack of filter units.
Claim 16
Dependent Claim
106 words
A disk-type filter according to claim 12 and wherein each said plurality of fingers is constructed to define outward facing surfaces and inward facing surfaces, said outward facing surfaces having a greater surface area than said inward facing surfaces, whereby during filtration operation of said filter, when a positive pressure differential is applied across said stack of filter units from said upstream side to said downstream side, said fingers are bent in a first sense from their steady state position, and upon elimination of said positive pressure differential, said fingers tend to snap back to their steady state position, thus enhancing removal of particulate matter therefrom.
Claim 17
Dependent Claim
26 words
Apparatus according to claim 1 and wherein said stack of filter units comprises a generally cylindrical element having an axial central bore along its longitudinal axis.
Claim 18
Dependent Claim
31 words
Apparatus according to claim 16 and also comprising means for providing a flushing fluid flow through said filter unit including a fluid discharge device arranged for axial movement along said bore.
Claim 19
Dependent Claim
28 words
Apparatus according to claim 17 and wherein said fluid discharge device comprises fluid driven means for providing rotation of a relatively high pressure flow about said longitudinal axis.
Claim 20
Dependent Claim
22 words
Apparatus according to claim 17 and wherein said fluid discharge device is manually manipulable for providing said axial movement along said bore.
Claim 21
Dependent Claim
26 words
A disk-type filter according to claim 1 and also comprising a manifold defining said inlet and said outlet in communication with said bottom of said housing.
Claim 22
Dependent Claim
19 words
A disk-type filter according to claim 20 and wherein said manifold is configured to provide a hydrocyclonic fluid flow.
Claim 23
Dependent Claim
17 words
A disk-type filter according to claim 20 and comprising means for azimuthally distributing fluid entering said filter.
Claim 24
Dependent Claim
26 words
A disk-type filter according to claim 20 and wherein said manifold provides a fluid inlet and a fluid outlet through a single aperture in said housing.
Claim 25
Dependent Claim
52 words
A disk-type filter according to claim 20 and wherein said manifold includes a body member and a collar member which are threadably joined so as to engage therebetween the edge of said housing adjacent an aperture formed therein in sealing engagement and to provide desired positioning of said manifold with respect thereto.
Claim 26
Dependent Claim
36 words
A disk-type filter according to claim 1 and also comprising a plurality of axial connecting elements which traverse said stack of filter units at locations intermediate inner and outer diameters of said stack of filter units.
Claim 27
Dependent Claim
44 words
A disk-type filter according to claim 25 and wherein said locations of said axial connecting elements communicate with said upstream side of said stack of filter units and are arranged so as not to interfere significantly with flushing of said stack of filter units.
Claim 28
Dependent Claim
54 words
Apparatus according to claim 1 and wherein the exterior of said fingers defined by said first and second surfaces communicates with the upstream side and the interior of said fingers defined by said first and second surfaces communicates with the downstream side of a fluid flow and said spaces define interstices between adjacent fingers.
Claim 29
Dependent Claim
54 words
Apparatus according to claim 1 and wherein the exterior of said fingers defined by said first and second surfaces communicates with the downstream side and the interior of said fingers defined by said first and second surfaces communicates with the upstream side of a fluid flow and said spaces define interstices between adjacent fingers.
Claim 30
Dependent Claim
20 words
Apparatus according to claim 1 and also comprising means for maintaining a plurality of said filter units in azimuthal registration.
Claim 31
Dependent Claim
30 words
Apparatus according to claim 1 and wherein said plurality of fingers is constructed with inwardly and outwardly facing surfaces, said outwardly facing surface being longer than said inwardly facing surface.
Claim 32
Dependent Claim
36 words
A disk-type filter according to claim 1 and wherein said plurality of co-operating filter units define a plurality of chambers having a relatively broad opening adjacent said downstream side and which narrow inwardly from said opening.
Claim 33
Dependent Claim
21 words
A disk-type filter according to claim 1 and wherein said plurality of fingers extend in a direction curved from the radial.
Claim 34
Dependent Claim
18 words
A disk-type filter according to claim 1 and wherein said plurality of fingers narrow as they extend outwardly.
Claim 35
Dependent Claim
33 words
A disk type filter according to claim 1 and wherein the thickness of said plurality of fingers is slightly less at their outward extent as compared to the thickness at their inward extent.
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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) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |