US4266954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holder for bag filter
Assignee: Alstom Power Inc
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Filing: 1979-07-12
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Granted: 1981-05-12
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Expires: 1999-07-12
Abstract
Abstract A bag filter assembly adapted to permit rapid removal, replacement and repair of the individual filter bags in the assembly. The filter bags are frictionally held in an operational position by a combination of interlocking parts that are securely held by spring biased detents. The spring biased detents of the several parts are designed to permit assembly and disassembly of the bag filter by a series of direct push-pull movements.
Inventors
- 👤 Arthur A. Oare
- 👤 Harold J. Wonderling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:00
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
222 words
Apparatus for filtering solids from gas comprising a housing having an inlet for dust bearing carrier gas and an outlet for gas from which dust has been removed, a tube sheet with a plurality of apertures therein extending across the housing intermediate the inlet and outlet to provide an inlet compartment for dirty gas and an outlet compartment for clean gas, a plurality of flexible bands, each of said bands having a groove in the outer surface thereof adapted to engage the periphery of an aperture of the tube sheet when the band is in an annular condition, a plurality of tubular filter bags depending from the tube sheet, each of said bags having an open end lying concentrically between one of the flexible bands and the periphery of one of the apertures in the tube sheet and a closed end extending into the inlet compartment for dirty gas, cage means adapted to support each filter bag and simultaneously bias each flexible band outward against the open end of each filter bag and the surrounding periphery of each aperture in the tube sheet, and means carried by the open end of each filter bag, said last named means having a venturi portion that extends above the tube sheet and a holding portion that extends into an open end of the cage means.
Claim 2
Dependent Claim
222 words
Apparatus for filtering solids from gas comprising a housing having an inlet for dust bearing carrier gas and an outlet for gas from which dust has been removed, a tube sheet with a plurality of apertures therein extending across the housing intermediate the inlet and outlet to provide an inlet compartment for dirty gas and an outlet compartment for clean gas, a plurality of flexible bands, each of said bands having a groove in the outer surface thereof adapted to engage the periphery of an aperture of the tube sheet when the band is in an annular condition, a plurality of tubular filter bags depending from the tube sheet, each of said bags having an open end lying concentrically between one of the flexible bands and the periphery of one of the apertures in the tube sheet and a closed end extending into the inlet compartment for dirty gas, cage means adapted to support each filter bag and simultaneously bias each flexible band outward against the open end of each filter bag and the surrounding periphery of each aperture in the tube sheet, and means carried by the open end of each filter bag, said last named means having a venturi portion that extends above the tube sheet and a holding portion that extends into an open end of the cage means.
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) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |