US3748835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid filter for gas washing apparatus
Assignee: Peabody Engineering Corp
•
Filing: 1972-02-07
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Granted: 1973-07-31
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Expires: 1992-02-07
Abstract
Abstract A liquid filter for a reservoir for a liquid carrying settleable solids which are removed by a sludge conveyor having transverse vanes or blades for advancing the sludge. The filter comprises a screen forming one side of an enclosure disposed below the liquid level in the reservoir in a position such that the vanes of the return flight of the conveyor scrape along the surface of the screen to remove entrapped particles from the screen.
Inventors
- 👤 N Panzica
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:26
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06; B01D21/00; B01D21/0012; B01D29/00; B01D29/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
122 words
Apparatus for filtering and removing liquid from a reservoir containing a liquid carrying settleable solids, comprising a conveyor having spaced transverse vanes adapted, in their forward flight, to advance and remove settled material from said reservoir and having a return flight below the liquid level in said reservoir, a separator unit having a screen on its under surface and having a discharge pipe connected to withdraw liquid from said unit which has passed through said screen, means positioning said unit above said return flight of said conveyor with said screen in surface contact with said vanes as they pass below said screen in their return flight, whereby said vanes dislodge and remove entrained particles from said screen and prevent the clogging thereof.
Claim 2
Dependent Claim
122 words
Apparatus for filtering and removing liquid from a reservoir containing a liquid carrying settleable solids, comprising a conveyor having spaced transverse vanes adapted, in their forward flight, to advance and remove settled material from said reservoir and having a return flight below the liquid level in said reservoir, a separator unit having a screen on its under surface and having a discharge pipe connected to withdraw liquid from said unit which has passed through said screen, means positioning said unit above said return flight of said conveyor with said screen in surface contact with said vanes as they pass below said screen in their return flight, whereby said vanes dislodge and remove entrained particles from said screen and prevent the clogging thereof.
Claim 3
Dependent Claim
26 words
Apparatus as set forth in claim 1 in which means is provided for adjusting the position of said screen relative to the path of said vanes.
Claim 4
Dependent Claim
35 words
Apparatus as set forth in claim 1 including a gas washing apparatus having means to pass a spray of liquid through a stream of gas and means to drain the wash liquid into said reservoir.
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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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |