Patent US3417958A successfully refreshed from Google Patents.
Patent US4328098A successfully refreshed from Google Patents.
US4328098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter apparatus
Assignee: SEAPOWER Inc A CORP OF MA
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Filing: 1981-05-04
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Granted: 1982-05-04
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Expires: 2001-05-04
Abstract
Abstract Filter apparatus for continuously separating filterable mixtures, such as fluid-solid or fluid-fluid mixtures, includes a closed loop tubular enclosure having an inlet, at least one filter section spaced downstream from the inlet, and a plurality of longitudinally spaced driving disks within the enclosure mounted for movement downstream therearound, the driving disks preferably being driven downstream through the enclosure by fluid flow from the inlet to the filter section for discharging at least a portion of the fluid. A backflow preventing portion of reduced inner cross section area may be provided upstream from the inlet and a residual material outlet may also be provided.
Inventors
- 👤 Robert A. Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:47
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/1812; B01J19/1837; B01D; B01D15/00; B01D15/02; B01D17/00; B01D17/02; B01D17/0202; B01D29/00; B01D29/11; B01D29/117; B01D29/118; B01D29/50; B01D29/52; B01D29/54; B01D29/62; B01D29/64; B01D29/6469; B01D29/6484; B01J19/24; B01J19/2415; B01J19/2435; B01J8/00; B01J8/08; B01J8/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
80 words
Filter apparatus for continuously separating filterable mixtures having a filterable component, including a closed loop tubular enclosure having an inlet at least one filter section associated with an outlet spaced downstream from said inlet, and a plurality of longitudinally spaced driving disks within said enclosure mounted for movement of said filterable mixture around said closed loop enclosure said driving disks being driven downstream through said enclosure for discharging at least a portion of said filterable component through said filter section.
Claim 2
Dependent Claim
80 words
Filter apparatus for continuously separating filterable mixtures having a filterable component, including a closed loop tubular enclosure having an inlet at least one filter section associated with an outlet spaced downstream from said inlet, and a plurality of longitudinally spaced driving disks within said enclosure mounted for movement of said filterable mixture around said closed loop enclosure said driving disks being driven downstream through said enclosure for discharging at least a portion of said filterable component through said filter section.
Claim 3
Dependent Claim
101 words
Filter apparatus for continuously separating filterable mixtures having a filterable component and a residual component, including a closed loop tubular enclosure having an inlet at least one filter section associated with an outlet spaced downstream from said inlet a residual material outlet, and a plurality of longitudinally spaced driving disks within said enclosure and mounted for movement of said filterable mixture around said closed loop enclosure said driving disks being driven downstream through said enclosure past said filter section for discharging at least a portion of said filterable component through said filter section and said residual material component through said outlet.
Claim 4
Dependent Claim
101 words
Filter apparatus for continuously separating filterable mixtures having a filterable component and a residual component, including a closed loop tubular enclosure having an inlet at least one filter section associated with an outlet spaced downstream from said inlet a residual material outlet, and a plurality of longitudinally spaced driving disks within said enclosure and mounted for movement of said filterable mixture around said closed loop enclosure said driving disks being driven downstream through said enclosure past said filter section for discharging at least a portion of said filterable component through said filter section and said residual material component through said outlet.
Claim 5
Dependent Claim
60 words
Filter apparatus as claimed in claim 1 or 2, wherein said enclosure has a backflow preventing, differential piston portion of reduced inner cross section area upstream from said inlet and downstream from said filter section between said filter section and said inlet for driving said driving disks downstream through said enclosure by flow from said inlet to said filter section.
Claim 6
Dependent Claim
32 words
Filter apparatus as claimed in claim 3, wherein said plurality of longitudinally spaced driving disks within said enclosure are radially compressible and sealingly contact its inner walls in said backflow preventing portion.
Claim 7
Dependent Claim
169 words
Filter apparatus for continuously separating filterable mixtures having at least one filterable component and a residual component, including a closed loop tubular enclosure having an inlet at least one filter section spaced downstream from said inlet a residual material outlet, and a plurality of radially compressible longitudinally spaced driving disks within said enclosure and mounted for movement downstream therearound said driving disks being driven downstream through said enclosure past said filter section for discharging at least a portion of said filterable component through said filter section and said residual material component through said outlet said enclosure having a backflow preventing, differential piston portion of reduced inner cross section area upstream from said inlet and downstream from said filter section between said filter section and said inlet for driving said driving disks downstream through said enclosure by flow from said inlet to said filter section, and said plurality of radially compressible longitudinally spaced driving disks within said enclosure sealingly contacting its inner walls at least in said backflow preventing portion.
Claim 8
Dependent Claim
169 words
Filter apparatus for continuously separating filterable mixtures having at least one filterable component and a residual component, including a closed loop tubular enclosure having an inlet at least one filter section spaced downstream from said inlet a residual material outlet, and a plurality of radially compressible longitudinally spaced driving disks within said enclosure and mounted for movement downstream therearound said driving disks being driven downstream through said enclosure past said filter section for discharging at least a portion of said filterable component through said filter section and said residual material component through said outlet said enclosure having a backflow preventing, differential piston portion of reduced inner cross section area upstream from said inlet and downstream from said filter section between said filter section and said inlet for driving said driving disks downstream through said enclosure by flow from said inlet to said filter section, and said plurality of radially compressible longitudinally spaced driving disks within said enclosure sealingly contacting its inner walls at least in said backflow preventing portion.
Claim 9
Dependent Claim
187 words
Filter apparatus for continuously separating filterable mixtures having at least one filterable component and a residual component, including a closed loop tubular enclosure having an inlet at least one filter section spaced downstream from said inlet a residual material outlet spaced downstream from said filter section and upstream from said inlet between said filter section and said inlet, and a plurality of radially compressible longitudinally spaced driving disks within said enclosure and mounted for movement downstream therearound said driving disks being driven downstream through said enclosure past said filter section for discharging at least a portion of said filterable component through said filter section and said residual material component through said outlet said enclosure having a backflow preventing, differential piston portion of reduced inner cross section area upstream from said inlet and downstream from said filter section between said filter section and said inlet for driving said driving disks downstream through said enclosure by flow from said inlet to said filter section, and said plurality of radially compressible longitudinally spaced driving disks within said enclosure sealingly contacting its inner walls at least in said backflow preventing portion.
Claim 10
Dependent Claim
187 words
Filter apparatus for continuously separating filterable mixtures having at least one filterable component and a residual component, including a closed loop tubular enclosure having an inlet at least one filter section spaced downstream from said inlet a residual material outlet spaced downstream from said filter section and upstream from said inlet between said filter section and said inlet, and a plurality of radially compressible longitudinally spaced driving disks within said enclosure and mounted for movement downstream therearound said driving disks being driven downstream through said enclosure past said filter section for discharging at least a portion of said filterable component through said filter section and said residual material component through said outlet said enclosure having a backflow preventing, differential piston portion of reduced inner cross section area upstream from said inlet and downstream from said filter section between said filter section and said inlet for driving said driving disks downstream through said enclosure by flow from said inlet to said filter section, and said plurality of radially compressible longitudinally spaced driving disks within said enclosure sealingly contacting its inner walls at least in said backflow preventing portion.
Claim 11
Dependent Claim
30 words
Filter apparatus as claimed in claim 1, 2, 5 or 6, wherein said enclosure has a filter flow increasing portion of reduced inner cross section area adjacent said filter section.
Claim 12
Dependent Claim
34 words
Filter apparatus as claimed in claim 1, 2, 5, 6 or 7, wherein said plurality of radially compressible longitudinally spaced driving disks within said enclosure sealingly contact its inner walls in said filter section.
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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) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |