Patent US4975187A successfully refreshed from Google Patents.
US4975187A
Expired / Lapsed
US
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Filter module including a baffle for protecting a bundle of filter fibers
Assignee: Lyonnaise des Eaux SA
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Filing: 1989-11-14
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Granted: 1990-12-04
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Expires: 2009-11-14
Abstract
Abstract A filter module comprises a bundle of filter fibers mounted in a housing. The bundle is provided with a heat-shrink sheath placed over a sleeve containing the bundle, with the sheath being placed level with lateral inlet/outlet orifices through the housing so as to act as a baffle against incoming liquid.
Inventors
- 👤 Jean-Michel Espenan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:21
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/02; B01D2313/00; B01D2313/23
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A filter module comprising a bundle of filter fibers mounted in a housing with lateral inlet or outlet orifices, wherein the bundle is provided with a heat-shrink sheath placed over a sleeve containing the bundle, with the sheath being placed level with the lateral orifices through the housing so as to act as a baffle against incoming liquid.
Claim 2
Dependent Claim
58 words
A filter module comprising a bundle of filter fibers mounted in a housing with lateral inlet or outlet orifices, wherein the bundle is provided with a heat-shrink sheath placed over a sleeve containing the bundle, with the sheath being placed level with the lateral orifices through the housing so as to act as a baffle against incoming liquid.
Claim 3
Dependent Claim
27 words
A filter module according to claim 1, wherein the bundle has a single heat-shrink sheath about halfway along its length and level with a single lateral orifice.
Claim 4
Dependent Claim
23 words
A module according to claim 1, wherein that portion of the heat-shrink sheath which is not exposed to liquid inflow is itself perforated.
References Cited (Backward Citations)
US4380460A
Cited
US4678573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-03 | 1994-06-04 | 1994-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-03 | 1998-06-04 | 1998-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-03 | 2002-06-04 | 2002-12-04 | $7700.00 | Window Closed / Lapsed |