Patent US3720322A successfully refreshed from Google Patents.
US3720322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Upflow cartridge filter apparatus
Assignee: Individual
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Filing: 1970-12-31
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Granted: 1973-03-13
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Expires: 1990-12-31
Abstract
Abstract A pressure filter having a pressure vessel comprising an open top lower tank section adapted to be closed by a removable domeshaped upper cover section, and an apertured filter support plate therebetween which divides the lower and upper sections into two chambers. A continuous rim gasket of substantially V-shaped cross-section mounted on the peripheral margin of the aperture plate seals the two chambers. The upper face of the apertured plate is provided with a handle means which cooperates with the domed cover section to press an outlet opening therein into a sealed engagement with the upper open end of an outlet pipe which passes through the lower chamber. A plurality of filter elements are individually and sealingly supported through the other openings or apertures in the apertured plate.
Inventors
- 👤 J Harms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:16
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/50; B01D29/52; B01D29/54; B01D29/96; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0446; B01D2201/24; B01D2201/28; B01D2201/287; B01D2201/34
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
263 words
A fluid cartridge comprising: A. a vessel having an open end and a removable dome-shaped cover for the open end, B. a single supporting plate for filter cartridges having apertures therein and being removable with the cartridges thereon as a unit and clampable at its edges between said open end and said cover, said unit comprising: 1. a continuous resilient gasket of V-shaped cross section overlapping both sides and surrounding the peripheral edge of said edges of said plate for sealing said cover, plate, and Open end of said filter, 2. a plurality of perforated tubes being flanged at one end and threaded at the other, held by their flanges in all but one of the apertures in said plate, 3. filter cartridges mounted on said tubes, 4. threaded caps for the other ends of said tubes for clamping said plate between said cartridges and said flanged ends of said tubes, and 5. lifting means mounted on said plate and engaging the inside of said dome-shaped cover, C. an outlet duct having one end thereof extending freely through said one aperture in said plate and having its other end attached to an outlet in the closed end of said vessel, said duct having a shoulder and gasket near its said one end adjacent said plate on the opposite side of said plate from said lifting means whereby said gasket is the only means for sealing said outlet duct to said plate and said gasket is held in sealing engagement with said plate by said lifting means, and D. an inlet to said vessel.
Claim 2
Dependent Claim
263 words
A fluid cartridge comprising: A. a vessel having an open end and a removable dome-shaped cover for the open end, B. a single supporting plate for filter cartridges having apertures therein and being removable with the cartridges thereon as a unit and clampable at its edges between said open end and said cover, said unit comprising: 1. a continuous resilient gasket of V-shaped cross section overlapping both sides and surrounding the peripheral edge of said edges of said plate for sealing said cover, plate, and Open end of said filter, 2. a plurality of perforated tubes being flanged at one end and threaded at the other, held by their flanges in all but one of the apertures in said plate, 3. filter cartridges mounted on said tubes, 4. threaded caps for the other ends of said tubes for clamping said plate between said cartridges and said flanged ends of said tubes, and 5. lifting means mounted on said plate and engaging the inside of said dome-shaped cover, C. an outlet duct having one end thereof extending freely through said one aperture in said plate and having its other end attached to an outlet in the closed end of said vessel, said duct having a shoulder and gasket near its said one end adjacent said plate on the opposite side of said plate from said lifting means whereby said gasket is the only means for sealing said outlet duct to said plate and said gasket is held in sealing engagement with said plate by said lifting means, and D. an inlet to said vessel.
Claim 3
Dependent Claim
56 words
A fluid cartridge comprising: A. a vessel having an open end and a removable dome-shaped cover for the open end, B. a single supporting plate for filter cartridges having apertures therein and being removable with the cartridges thereon as a unit and clampable at its edges between said open end and said cover, said unit comprising:
Claim 4
Dependent Claim
56 words
A fluid cartridge comprising: A. a vessel having an open end and a removable dome-shaped cover for the open end, B. a single supporting plate for filter cartridges having apertures therein and being removable with the cartridges thereon as a unit and clampable at its edges between said open end and said cover, said unit comprising:
Claim 5
Dependent Claim
33 words
a continuous resilient gasket of V-shaped cross section overlapping both sides and surrounding the peripheral edge of said edges of said plate for sealing said cover, plate, and Open end of said filter,
Claim 6
Dependent Claim
33 words
a continuous resilient gasket of V-shaped cross section overlapping both sides and surrounding the peripheral edge of said edges of said plate for sealing said cover, plate, and Open end of said filter,
Claim 7
Dependent Claim
29 words
a plurality of perforated tubes being flanged at one end and threaded at the other, held by their flanges in all but one of the apertures in said plate,
Claim 8
Dependent Claim
29 words
a plurality of perforated tubes being flanged at one end and threaded at the other, held by their flanges in all but one of the apertures in said plate,
Claim 9
Dependent Claim
24 words
A cartridge filter according to claim 1 wherein said vessel and said cover have cooperating flanges and bolt means for clamping said flanges together.
Claim 10
Dependent Claim
6 words
filter cartridges mounted on said tubes,
Claim 11
Dependent Claim
6 words
filter cartridges mounted on said tubes,
Claim 12
Dependent Claim
27 words
A cartridge filter according to claim 1 wherein said plate divides said filter into two chambers, one in said vessel and the other in said dome-shaped cover.
Claim 13
Dependent Claim
110 words
lifting means mounted on said plate and engaging the inside of said dome-shaped cover, C. an outlet duct having one end thereof extending freely through said one aperture in said plate and having its other end attached to an outlet in the closed end of said vessel, said duct having a shoulder and gasket near its said one end adjacent said plate on the opposite side of said plate from said lifting means whereby said gasket is the only means for sealing said outlet duct to said plate and said gasket is held in sealing engagement with said plate by said lifting means, and D. an inlet to said vessel.
Claim 14
Dependent Claim
110 words
lifting means mounted on said plate and engaging the inside of said dome-shaped cover, C. an outlet duct having one end thereof extending freely through said one aperture in said plate and having its other end attached to an outlet in the closed end of said vessel, said duct having a shoulder and gasket near its said one end adjacent said plate on the opposite side of said plate from said lifting means whereby said gasket is the only means for sealing said outlet duct to said plate and said gasket is held in sealing engagement with said plate by said lifting means, and D. an inlet to said vessel.
References Cited (Backward Citations)
US2316206A
Cited
US2859876A
Cited
US2921686A
Cited
US3394815A
Cited
US3431709A
Cited
US3498464A
Cited
US3503516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |