Patent US3647084A successfully refreshed from Google Patents.
US3647084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: WILLIAM W NUGENT AND CO Inc
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Filing: 1969-10-17
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Granted: 1972-03-07
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Expires: 1989-10-17
Abstract
Abstract A filter having a plurality of axially aligned and axially spaced flat annular discs of filtering material separated by inner and outer support members alternating axially with the respective discs and providing axial support for the discs while defining radial inlet and outlet openings communicating with the spaces between the discs for the flow of fluid axially through the discs.
Inventors
- 👤 Henry Woods Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:13
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/22; B01D25/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
351 words
In a filter, the combination of a plurality of imperforate, flat, annular discs of filter material aligned axially and spaced apart axially, a plurality of first support members of rigid material extending into alternating ones of the spaces between said discs and each comprising a thin, flat inner ring having an inner periphery at lEast as small in radius as the inner peripheries of said discs and aligned axially with and engaging the inner peripheral portions of two adjacent ones of said discs in radially, overlapping relation, a hub integral with said inner periphery of said ring and projecting axially in each direction from the ring a distance equal approximately to the thickness of each of said discs, and a plurality of inner central support parts extending outwardly from the outer periphery of said inner ring across and between adjacent ones of said discs, second support members of rigid material alternating with said first members and extending into the intervening ones of said spaces between said discs, each of said second members comprising a thin, flat outer ring having an outer periphery at least as large in radius as the outer peripheries of said discs and aligned axially with and engaging the outer peripheral portions of two adjacent ones of said discs in radially overlapping relation, a rim integral with the outer periphery of said outer ring and projecting axially in each direction therefrom a distance equal approximately to the thickness of each of said discs, and a plurality of outer central support parts extending inwardly from the inner periphery of said outer ring across and between adjacent ones of said discs, and means applying an axial force clamping said members together axially to hold the same in assembled relation with said discs between said hubs and the rims of the members, said members cooperating to define outer passageways opening radially with respect to said rims and into spaces between said discs occupied by said inner central support parts and inner passageways opening radially with respect to said hubs and into spaces between discs occupied by said outer central support parts.
Claim 2
Dependent Claim
351 words
In a filter, the combination of a plurality of imperforate, flat, annular discs of filter material aligned axially and spaced apart axially, a plurality of first support members of rigid material extending into alternating ones of the spaces between said discs and each comprising a thin, flat inner ring having an inner periphery at lEast as small in radius as the inner peripheries of said discs and aligned axially with and engaging the inner peripheral portions of two adjacent ones of said discs in radially, overlapping relation, a hub integral with said inner periphery of said ring and projecting axially in each direction from the ring a distance equal approximately to the thickness of each of said discs, and a plurality of inner central support parts extending outwardly from the outer periphery of said inner ring across and between adjacent ones of said discs, second support members of rigid material alternating with said first members and extending into the intervening ones of said spaces between said discs, each of said second members comprising a thin, flat outer ring having an outer periphery at least as large in radius as the outer peripheries of said discs and aligned axially with and engaging the outer peripheral portions of two adjacent ones of said discs in radially overlapping relation, a rim integral with the outer periphery of said outer ring and projecting axially in each direction therefrom a distance equal approximately to the thickness of each of said discs, and a plurality of outer central support parts extending inwardly from the inner periphery of said outer ring across and between adjacent ones of said discs, and means applying an axial force clamping said members together axially to hold the same in assembled relation with said discs between said hubs and the rims of the members, said members cooperating to define outer passageways opening radially with respect to said rims and into spaces between said discs occupied by said inner central support parts and inner passageways opening radially with respect to said hubs and into spaces between discs occupied by said outer central support parts.
Claim 3
Dependent Claim
34 words
The combination of claim 1 in which said inner central support parts are spokes radiating outwardly from said inner ring and said outer central support parts are spokes radiating inwardly from said outer ring.
Claim 4
Dependent Claim
43 words
The combination of claim 2 in which each of said support members has the same number of spokes and angular orientation parts are formed on the support members to facilitate orientation of the members with said spokes in register axially of the members.
Claim 5
Dependent Claim
75 words
The combination of claim 1 in which said inner central support parts are spokes extending radially and outwardly beyond the outer peripheries of said discs and their outer ends are clamped between said rims and cooperate therewith to define said outer passageways and said outer central support parts are spokes extending radially and inwardly beyond the inner peripheries of said discs and are clamped between said hubs and cooperate therewith to define said inner passageways.
Claim 6
Dependent Claim
110 words
The combination of claim 1 in which said inner central support parts of said first members extend outwardly short of said rims, said rims engage each other axially to sustain the axial force of said clamping means outwardly beyond the outer peripheries of said discs and are formed with angularly spaced radially opening recesses forming said outer passageways, said outer central support parts of said second members extend inwardly short of said hubs, and said hubs engage each other axially to sustain the axial force of said clamping means inwardly beyond the inner peripheries of said discs and are formed with angularly spaced radially opening recesses forming said inner passageways.
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |