Patent US4445550B1 successfully refreshed from Google Patents.
US5296010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic candle filter arrangements
Assignee: Cranfield University
•
Filing: 1992-12-01
•
Granted: 1994-03-22
•
Expires: 2012-12-01
Abstract
Abstract A ceramic filter candle arrangement employs a plurality of filter candles held within a tube plate by hold-down weights, each having a flow path, and includes a conduit communicating with the flow path and protruding into the candle filter. A passage is formed between the conduit and the internal wall of the filter candle and leads to at least one exhaust port. In operation, the passage and the exhaust port allow controlled pressure wave leakage during gas pulse cleaning of the filter candle.
Inventors
- 👤 Richard K. Clark
- 👤 John E. Fackrell
- 👤 John D. Stott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:56
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/2403; B01D46/2407; B01D46/0039; B01D46/0047; B01D46/0049; B01D46/42; B01D46/4227; B01D2271/00; B01D2271/02; B01D2273/00; B01D2273/20; Y; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
A ceramic candle filter arrangement including a plurality of filter candles, a tube plate, a plurality of aperture means formed in the tube plate, each filter candle being sealingly secured within a respective one of said aperture means, a tubular weight engaging with each filter candle, a gas flow path means being defined within and extending through each weight, and a conduit registering with the flow path means and extending into the candle to terminate therewithin, a passage means being defined between each conduit and each associated filter candle, and at least one exhaust port means located externally of the candle and communicating with said passage means.
Claim 2
Dependent Claim
107 words
A ceramic candle filter arrangement including a plurality of filter candles, a tube plate, a plurality of aperture means formed in the tube plate, each filter candle being sealingly secured within a respective one of said aperture means, a tubular weight engaging with each filter candle, a gas flow path means being defined within and extending through each weight, and a conduit registering with the flow path means and extending into the candle to terminate therewithin, a passage means being defined between each conduit and each associated filter candle, and at least one exhaust port means located externally of the candle and communicating with said passage means.
Claim 3
Dependent Claim
17 words
An arrangement according to claim I in which each conduit is attached to its associated tubular weight.
Claim 4
Dependent Claim
26 words
An arrangement according to claim 1 in which each conduit is provided with an abutment portion for contact with the top of the associated filter candle.
Claim 5
Dependent Claim
19 words
An arrangement according to claim 3 in which the abutment portion incorporates the at least one exhaust port means.
Claim 6
Dependent Claim
34 words
An arrangement according to claim 4 in which the abutment portion comprises a mounting collar having a wall provided with a series of further aperture means, said further aperture means constituting exhaust port means.
Claim 7
Dependent Claim
20 words
An arrangement according to claim 1 in which the passage means defined between the conduit and the candle is annular.
References Cited (Backward Citations)
US2892510A
Cited
US2892512A
Cited
US3429106A
Cited
US3431709A
Cited
US3729903A
Cited
US3963467A
Cited
US4735638A
Cited
US4812149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-21 | 1997-09-20 | 1998-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-21 | 2001-09-20 | 2002-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-21 | 2005-09-20 | 2006-03-22 | $7700.00 | Window Closed / Lapsed |