US4113455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag tensioning arrangement
Assignee: Alstom Power Inc
•
Filing: 1977-12-21
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Granted: 1978-09-12
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Expires: 1997-12-21
Abstract
Abstract A bag filter and a filter bag tension means for providing a predetermined tension on the filter bag. The tension may be quickly varied or even completely removed to provide an optimum tension for dust collecting or rapid bag removal.
Inventors
- 👤 Donald Louis Richmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:29
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0002; B01D46/0005; B01D46/02; B01D46/04; B01D46/88
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
178 words
Apparatus for filtering solids from a carrier gas comprising a housing having an inlet duct for dust bearing carrier gas and an outlet duct for clean gas from which dust has been removed, an apertured tube sheet comprising a plurality of apertures and extending across said housing to provide an inlet compartment adjacent the inlet duct and an outlet compartment adjacent the outlet duct, a plurality of tubular filter bags each having an open end thereof attached to the periphery of one of said apertures of the tube sheet and a closed end extending axially therefrom, means for holding the filter bags in an extended condition comprising an apertured beam extending across said housing, a linkage rod extending axially from the closed end of each filter bag through an aperture of said beam, spring means biasing each linkage rod axially relative to said beam to hold each filter bag in an extended condition, and spring adjusting means slidably mounted on each linkage rod to vary the tension of the spring biasing means on each of the filter bags.
Claim 2
Dependent Claim
178 words
Apparatus for filtering solids from a carrier gas comprising a housing having an inlet duct for dust bearing carrier gas and an outlet duct for clean gas from which dust has been removed, an apertured tube sheet comprising a plurality of apertures and extending across said housing to provide an inlet compartment adjacent the inlet duct and an outlet compartment adjacent the outlet duct, a plurality of tubular filter bags each having an open end thereof attached to the periphery of one of said apertures of the tube sheet and a closed end extending axially therefrom, means for holding the filter bags in an extended condition comprising an apertured beam extending across said housing, a linkage rod extending axially from the closed end of each filter bag through an aperture of said beam, spring means biasing each linkage rod axially relative to said beam to hold each filter bag in an extended condition, and spring adjusting means slidably mounted on each linkage rod to vary the tension of the spring biasing means on each of the filter bags.
Claim 3
Dependent Claim
24 words
Apparatus as defined in claim 1 wherein the spring biasing means comprises a compression spring intermediate the apertured beam and the spring adjusting means.
Claim 4
Dependent Claim
39 words
Apparatus as defined in claim 1 wherein the spring adjusting means is wedge-shaped having a transverse aperture through which said rod passes and having one face lying oblique with respect to said transverse aperture and one lying normal thereto.
References Cited (Backward Citations)
US1734170A
Cited
US2014298A
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US2090550A
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US2350011A
Cited
US3241297A
Cited
US3724178A
Cited
US3710559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |