US3884659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter bag assembly for pulse jet collector
Assignee: Flex-Kleen Corp
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Filing: 1974-06-03
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Granted: 1975-05-20
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Expires: 1994-06-03
Abstract
Abstract An improved filter bag assembly for pulse jet dust collectors, the assembly including an open ended sleeve-like filter bag telescopingly fitted over an open ended wire support cage and a metal end cap for closing one end of the filter bag and cage. The end cap is crimped onto the bag end in a double curl lock seam arrangement and is provided with circumferentially spaced detents which provide a mechanical interlock within the bottom end ring of the support cage to center the bag relative to the cage.
Inventors
- 👤 Frank M Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:01
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
139 words
A freely suspended filter bag assembly for a pulse jet type dust collector comprising an elongated, generally cylindrical wire cage having an end ring defining an open cage end, an elongated sleeve-like bag of porous flexible filter media disposed in slack telescoping relation along said cage and having a circumambient bag end portion defining an open end adjacent said end ring and a metal end cap for closing said open end of the bag and including a circumambient clamping rim portion in airtight peripheral engagement with the circumambient bag end portion, said end cap having a pilot portion axially offset from said rim portion and projecting into said end ring in mechanically interlocked relation with said end ring to center and hold the circumambient bag end portion and said end ring of the cage in peripherally spaced apart relationship.
Claim 2
Dependent Claim
139 words
A freely suspended filter bag assembly for a pulse jet type dust collector comprising an elongated, generally cylindrical wire cage having an end ring defining an open cage end, an elongated sleeve-like bag of porous flexible filter media disposed in slack telescoping relation along said cage and having a circumambient bag end portion defining an open end adjacent said end ring and a metal end cap for closing said open end of the bag and including a circumambient clamping rim portion in airtight peripheral engagement with the circumambient bag end portion, said end cap having a pilot portion axially offset from said rim portion and projecting into said end ring in mechanically interlocked relation with said end ring to center and hold the circumambient bag end portion and said end ring of the cage in peripherally spaced apart relationship.
Claim 3
Dependent Claim
69 words
A filter bag assembly as defined in claim 1 wherein said clamping rim portion has a reverse bend portion intermediate said pilot portion and a marginal reverse bend portion said intermediate reverse bend portion merging with said marginal reverse bend portion so as to define a U-shaped circumambient groove that contains a U-shaped bag end portion to define a double curl lock seam joint between the bag and cap.
Claim 4
Dependent Claim
30 words
A filter bag assembly as defined in claim 1 wherein the axially offset pilot portion includes a set of circumferentially spaced detents for positive mechanical interlock with said end ring.
References Cited (Backward Citations)
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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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |