US4251375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering apparatus
Assignee: Individual
•
Filing: 1979-04-12
•
Granted: 1981-02-17
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Expires: 1999-04-12
Abstract
Abstract The apparatus comprises a hollow casing in the form of a solid of revolution having an inlet and an outlet, a spinner for imparting rotary motion within the casing to a fluid being purified, and a hollow filter element closed at one end, positioned coaxially within the casing and snugly fit with the open end in the outlet of the casing. The apparatus also includes a discharge connection piece for removal of the impurities that have been separated from the fluid being purified. The spinner is positioned at the inlet, and the discharge connection piece is attached to the lower portion of the casing. The filter element and the casing define a space tapering from the inlet toward the outlet, and the filter element being a frame with a covering having a water-repellent polymeric foam material applied thereto.
Inventors
- 👤 Viktor I. Pakki
- 👤 Chingiz S. Guseinov
- 👤 Sabir Y. Bogdanovich
- 👤 Petr D. Guzhin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:55
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D35/00; B01D35/22; B01D46/0002; B01D46/0012; B01D46/0027; B01D46/003; B01D46/0031; B01D2265/00; B01D2265/06; B01D2275/00; B01D2275/20; B01D2275/201
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
167 words
A filtering apparatus comprising: a hollow casing formed as a solid of revolution and having an inlet and an outlet; a spinner positioned at the inlet of said casing and adapted to impart rotary motion within said casing to a fluid being purified; a hollow filter element closed at one end, and positioned coaxially within said casing to define together with said casing a space tapering from the inlet toward the outlet; and said filter element further being snugly fit with the open end thereof in the outlet and comprising a perforated frame, and a covering of a water-repellent polymeric foam material applied to said perforated frame; a discharge connection piece attached to the lower portion of said casing and adapted for removal of the impurities that have been separated from the fluid being purified; and the ratio between diameters of said casing and said filter element is from 2 to 3 at the inlet of said casing, and from 1 to 2 at the outlet thereof
Claim 2
Dependent Claim
167 words
A filtering apparatus comprising: a hollow casing formed as a solid of revolution and having an inlet and an outlet; a spinner positioned at the inlet of said casing and adapted to impart rotary motion within said casing to a fluid being purified; a hollow filter element closed at one end, and positioned coaxially within said casing to define together with said casing a space tapering from the inlet toward the outlet; and said filter element further being snugly fit with the open end thereof in the outlet and comprising a perforated frame, and a covering of a water-repellent polymeric foam material applied to said perforated frame; a discharge connection piece attached to the lower portion of said casing and adapted for removal of the impurities that have been separated from the fluid being purified; and the ratio between diameters of said casing and said filter element is from 2 to 3 at the inlet of said casing, and from 1 to 2 at the outlet thereof
Claim 3
Dependent Claim
28 words
A filtering apparatus as set forth in claim 1, wherein said filter element is cylindrical, and said casing is conical tapering from the inlet toward the outlet thereof.
Claim 4
Dependent Claim
32 words
A filtering apparatus as set forth in claim 2, wherein the water-repellent polymeric foam material for said covering is a fluorine plastic, said casing being conical, and said filter element being cylindrical.
Claim 5
Dependent Claim
30 words
A filtering apparatus as set forth in claim 1, wherein said casing is cylindrical and said filter element is conical tapering from the inlet toward the outlet of said casing.
Claim 6
Dependent Claim
30 words
A filtering apparatus as set forth in claim 4, wherein the water-repellent polymeric foam material for said covering is polypropylene, said casing being cylindrical, and said filter element being conical.
Claim 7
Dependent Claim
40 words
A filtering apparatus as set forth in claim 1, wherein said casing is a cone tapering from the inlet toward the outlet thereof while said filter element is a cone expanding from the inlet toward the outlet of said casing.
Claim 8
Dependent Claim
29 words
A filtering apparatus as set forth in claim 6, wherein said water-repellent polymeric foam material for said covering is polyethylene, and said casing and said filter element being conical.
Claim 9
Dependent Claim
46 words
A filtering apparatus as set forth in claim 6, wherein the water-repellent polymeric foam material for said covering is a metalline silicon compound, said casing and said filter element being conical as well as the present invention being utilized for purifying hot gases and aggressive media.
Claim 10
Dependent Claim
43 words
A filtering apparatus as set forth in claim 1, wherein at least one set of guide vanes are positioned in the tapering space between said casing and said filter element in said apparatus where said filter element extends for more than 1 m.
Claim 11
Dependent Claim
34 words
A filtering apparatus as set forth in claim 1, wherein there is a common housing containing at least two separate conical casings positioned in parallel, each of which comprises separate filter elements and spinners.
Claim 12
Dependent Claim
23 words
A filtering apparatus as set forth in claim 9, wherein said spinner is a set of guide vanes extending radially within the casing.
Claim 13
Dependent Claim
20 words
A filtering apparatus as set forth in claim 1, wherein said spinner is an impeller connected to a drive mechanism.
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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) | 1984-02-17 | 1984-08-18 | 1985-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-17 | 1988-08-18 | 1989-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-17 | 1992-08-18 | 1993-02-17 | $7700.00 | Window Closed / Lapsed |