US4738696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baghouse installations
Assignee: Individual
•
Filing: 1987-07-16
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Granted: 1988-04-19
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Expires: 2007-07-16
Abstract
Abstract The invention pertains to a means for capping a defective or torn fabric filter bag unit used in a baghouse. The capping means comprises a toggle locking mechanism comprising a flat upper plate adapted to cap the venturi opening of the defective filter bag and to be secued in locking engagement with the venturi.
Inventors
- 👤 Richard W. Staffeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:29
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/0001; B01D46/0002; B01D46/0004; B01D46/42; B01D46/4281; B01D46/66; B01D46/70; B01D46/71; B01D2265/00; B01D2265/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
170 words
In combination with a baghouse fabric filter unit adapted to be supported in a baghouse by an overhead tube sheet, a capping means for capping a defective fabric bag filter unit, comprising: the fabric filter unit comprising a metal venturi and a fabric filter cylinder where the venturi is disposed within and interconnected to the fabric filter cylinder, the fabric filter cylinder comprising a tubular fabric bag telescoped over a wire cylinder, the venturi comprising a venturi body with a venturi opening and an upper peripheral flat collar and a lower peripheral flange around the venturi opening; and a capping means for capping the venturi of the filter unit comprising an upper locking plate adapted to engage the upper flat collar and cover the venturi opening, a lower elongated wobble plate adapted to engage the lower flange, and a locking means operatively interconnected with the upper locking plate and the lower wobble plate to provide locking engagement of the upper locking plate and the lower wobble plate with the venturi.
Claim 2
Dependent Claim
170 words
In combination with a baghouse fabric filter unit adapted to be supported in a baghouse by an overhead tube sheet, a capping means for capping a defective fabric bag filter unit, comprising: the fabric filter unit comprising a metal venturi and a fabric filter cylinder where the venturi is disposed within and interconnected to the fabric filter cylinder, the fabric filter cylinder comprising a tubular fabric bag telescoped over a wire cylinder, the venturi comprising a venturi body with a venturi opening and an upper peripheral flat collar and a lower peripheral flange around the venturi opening; and a capping means for capping the venturi of the filter unit comprising an upper locking plate adapted to engage the upper flat collar and cover the venturi opening, a lower elongated wobble plate adapted to engage the lower flange, and a locking means operatively interconnected with the upper locking plate and the lower wobble plate to provide locking engagement of the upper locking plate and the lower wobble plate with the venturi.
Claim 3
Dependent Claim
31 words
The combination in claim 1 where the wobble plate of the capping means is adapted to wobble askew for entering the venturi opening to enable engagement with the lower flange thereof.
Claim 4
Dependent Claim
15 words
The combination in claim 1 where the elongated lower wobble plate comprises a rectangular plate.
Claim 5
Dependent Claim
15 words
The combination in claim 1 where the locking means comprises a toggle bolt locking mechanism.
Claim 6
Dependent Claim
42 words
The combination in claim 1 where the locking means comprises a threaded rod and an upper threaded locking means and the threaded locking means is adapted to be tightened to lock the upper locking plate to the venturi upper peripheral flat collar.
Claim 7
Dependent Claim
14 words
The combination in claim 5 where the threaded locking means comprises a wing nut.
Claim 8
Dependent Claim
128 words
A capping means for capping a defective fabric filter unit used in a baghouse, the fabric filter unit comprising a venturi interconnected to a tubular fabric bag telescopped over a wire cylinder, the venturi having an upper peripheral flat collar and a lower peripheral flange surrounding the central venturi opening, the capping means comprising: an upper flat locking plate adapted to engage the upper flat collar and cover the venturi opening, an elongated lower wobble plate adapted to pass through the venturi opening and engage the outer periphery of the lower flange, and a locking means interconnecting the upper locking plate and the lower wobble plate, where the locking means is adapted to tighten the upper locking plate and lower wobble plate in locking engagement with the venturi.
Claim 9
Dependent Claim
128 words
A capping means for capping a defective fabric filter unit used in a baghouse, the fabric filter unit comprising a venturi interconnected to a tubular fabric bag telescopped over a wire cylinder, the venturi having an upper peripheral flat collar and a lower peripheral flange surrounding the central venturi opening, the capping means comprising: an upper flat locking plate adapted to engage the upper flat collar and cover the venturi opening, an elongated lower wobble plate adapted to pass through the venturi opening and engage the outer periphery of the lower flange, and a locking means interconnecting the upper locking plate and the lower wobble plate, where the locking means is adapted to tighten the upper locking plate and lower wobble plate in locking engagement with the venturi.
Claim 10
Dependent Claim
29 words
The capping means in claim 7 where the locking means comprises a threaded rod having a locking nut for locking the capping means in tight engagement with the venturi.
Claim 11
Dependent Claim
29 words
The capping means in claim 7 where the lower wobble plate is adapted to pass through the venturi opening askew to engage the outer periphery of the lower flange.
Claim 12
Independent Claim
193 words
A method of capping a defective fabric filter unit supported in a baghouse, where the fabric filter unit comprises a metal venturi interconnected with a fabric filter, the venturi containing an upper peripheral flat collar and a lower peripheral flange surrounding the central venturi opening, the method comprising: providing a capping means comprising an upper locking plate adapted to engage the upper peripheral flat collar and cover the venturi opening, a lower elongated wobble plate adapted to engage the outer periphery of the lower flange, and a locking mechanism interconnected to the upper locking plate and the lower wobble plate to provide locking engagement with the venturi; inserting the capping means into the venturi opening and causing the lower wobble plate to be orientated askew within the venturi opening; passing the askewed wobble plate through the lower peripheral flange of the venturi and engaging the outer periphery of the said lower flange with the wobble plate; locating the upper locking plate in engagement with the upper peripheral flat collar of the venturi and covering the venturi opening; and locking the upper locking plate and lower wobble plate in tight engagement with the venturi.
Claim 13
Independent Claim
193 words
A method of capping a defective fabric filter unit supported in a baghouse, where the fabric filter unit comprises a metal venturi interconnected with a fabric filter, the venturi containing an upper peripheral flat collar and a lower peripheral flange surrounding the central venturi opening, the method comprising: providing a capping means comprising an upper locking plate adapted to engage the upper peripheral flat collar and cover the venturi opening, a lower elongated wobble plate adapted to engage the outer periphery of the lower flange, and a locking mechanism interconnected to the upper locking plate and the lower wobble plate to provide locking engagement with the venturi; inserting the capping means into the venturi opening and causing the lower wobble plate to be orientated askew within the venturi opening; passing the askewed wobble plate through the lower peripheral flange of the venturi and engaging the outer periphery of the said lower flange with the wobble plate; locating the upper locking plate in engagement with the upper peripheral flat collar of the venturi and covering the venturi opening; and locking the upper locking plate and lower wobble plate in tight engagement with the venturi.
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) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |