US5045194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter apparatus having a bag with handles
Assignee: ISP Investments LLC
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Filing: 1990-04-02
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Granted: 1991-09-03
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Expires: 2010-04-02
Abstract
Abstract A filter apparatus having a bag filter subassembly for collecting contaminating material. The bag filter subassembly includes a bag filter having a top end portion and a gasket ring having a goove receiving the top end portion. The gasket ring has a pair of opposite, upright, axial handles each having a finger-grip, loop portion and a resilient stem portion. The upright handles, which are used for lifting the bag filter from an enclosure vessel deflect down to a radial position when a cover is positioned on the vessel and also spring up when the cover is removed.
Inventors
- 👤 Moshe Gershenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:52
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/23; B01D29/27; B01D29/111; B01D29/96
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
191 words
A filter apparatus comprising: an enclosure subassembly having an axis and having a housing with a top flange for connections for engaging a cover plate; a basket subassembly having a basket portion and having an annular ring with a bottom surface with a groove with an O-ring in sealing engagement with the top flange; a bag filter subassembly having a filter bag and an integral resilient gasket ring having a bottom surface in sealing engagement with the annular ring and having a top surface in sealing engagement with the cover plate; the filter bag having a top end portion; the gasket ring having a groove which receives and is fixedly connected to the top end portion; the gasket ring having a pair of handles for axial pulling by a pair of hands; each of the handles having a loop portion with an opening for gripping the loop portion by a respective hand and having a resilient stem portion; the stem portion being disposed in an upright axial position and being bendable by the cover plate to a radial position when the cover plate is in engagement with the basket top flange.
Claim 2
Dependent Claim
191 words
A filter apparatus comprising: an enclosure subassembly having an axis and having a housing with a top flange for connections for engaging a cover plate; a basket subassembly having a basket portion and having an annular ring with a bottom surface with a groove with an O-ring in sealing engagement with the top flange; a bag filter subassembly having a filter bag and an integral resilient gasket ring having a bottom surface in sealing engagement with the annular ring and having a top surface in sealing engagement with the cover plate; the filter bag having a top end portion; the gasket ring having a groove which receives and is fixedly connected to the top end portion; the gasket ring having a pair of handles for axial pulling by a pair of hands; each of the handles having a loop portion with an opening for gripping the loop portion by a respective hand and having a resilient stem portion; the stem portion being disposed in an upright axial position and being bendable by the cover plate to a radial position when the cover plate is in engagement with the basket top flange.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1, wherein the stem portion has an arcuate end portion integrally connected to the gasket ring.
Claim 4
Dependent Claim
14 words
The apparatus of claim 1, wherein the gasket ring is formed of elastomeric material.
Claim 5
Dependent Claim
18 words
The apparatus of claim 1, wherein the gasket ring and integral handles are composed of a polyurethane composition.
Claim 6
Dependent Claim
17 words
The apparatus of claim 1, wherein the gasket ring with integral handles is a molded unitary piece.
Claim 7
Dependent Claim
28 words
The apparatus of claim 1, wherein the cover plate has an inlet connection; the cover plate and housing enclose a chamber; and the housing having an outlet connection.
References Cited (Backward Citations)
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US4169331A
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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) | 1994-09-02 | 1995-03-04 | 1995-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-02 | 1999-03-04 | 1999-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-02 | 2003-03-04 | 2003-09-03 | $7700.00 | Window Closed / Lapsed |