Patent US6448863B1 successfully refreshed from Google Patents.
US3877906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtration apparatus
Assignee: Individual
•
Filing: 1972-04-06
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Granted: 1975-04-15
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Expires: 1992-04-06
Abstract
Abstract An apparatus for filtering particulate matter which includes trap means for permitting higher density particulate matter to leave the space between a shell and filter while preventing lower density gas from escaping from the same space.
Inventors
- 👤 Carl R Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:01
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/26; Y; Y10; Y10S; Y10S494/00; Y10S494/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
Apparatus for removing particulate matter from a fluid medium entering the apparatus at high pressure which comprises a housing, a filter means positioned in the housing for rotation therein, a shell means positioned between said housing and said filter means and defining a space for the reception of the fluid medium containing particulate matter, said shell means supporting vanes within said space for rotation therewith, and said shell means constructed to rotate with said filter means, means for permitting the passage of fluid from said housing after filtering, drive means comprising stationary annular nozzle means supported by the housing and positioned to cause rotation of said filter means, shell means and vanes upon the passage of fluid under high pressure therethrough as the fluid passes into the space for filtering, and means for collecting the particulate matter after filtering.
Claim 2
Dependent Claim
139 words
Apparatus for removing particulate matter from a fluid medium entering the apparatus at high pressure which comprises a housing, a filter means positioned in the housing for rotation therein, a shell means positioned between said housing and said filter means and defining a space for the reception of the fluid medium containing particulate matter, said shell means supporting vanes within said space for rotation therewith, and said shell means constructed to rotate with said filter means, means for permitting the passage of fluid from said housing after filtering, drive means comprising stationary annular nozzle means supported by the housing and positioned to cause rotation of said filter means, shell means and vanes upon the passage of fluid under high pressure therethrough as the fluid passes into the space for filtering, and means for collecting the particulate matter after filtering.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |