Patent US672921A successfully refreshed from Google Patents.
US5454858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of using mist collector cartridge
Assignee: Donaldson Co Inc
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Filing: 1994-12-12
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Granted: 1995-10-03
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Expires: 2014-12-12
Abstract
Abstract A mist collector cartridge for collecting airborne liquids, and more particularly, a filter media having vertically oriented interconnected pleats treated with a low surface energy material to facilitate agglomeration and drainage of liquid which accumulates on the inner and outer surface of the filter media.
Inventors
- 👤 Joseph C. Tokar
- 👤 Mervin E. Wright
- 👤 Timothy H. Grafe
- 👤 James A LeBlanc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:10
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; B01D46/0001; B01D46/0002; B01D46/0005; B01D46/0027; B01D46/003; B01D46/24; B01D46/2403; B01D46/2411; B01D46/56; B01D46/62; B01D46/88
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
A method for separating and collecting airborne liquids using a filtration system, comprising the steps of: a) providing a filter media having vertical pleats with a separation therebetween and pleat spacing means for maintaining the separation between the vertical pleats, the filter media having an air inlet surface and an air outlet surface; b) treating the filter media with filter treatment means for agglomerating liquids which contact the media to promote drainage of the liquid downward along the vertical pleats; c) forcing air containing the liquid from the air inlet surface of the filter media to the air outlet surface so that liquid is collected on the filter media; and d) collecting liquid which drains from the vertical pleats.
Claim 2
Independent Claim
119 words
A method for separating and collecting airborne liquids using a filtration system, comprising the steps of: a) providing a filter media having vertical pleats with a separation therebetween and pleat spacing means for maintaining the separation between the vertical pleats, the filter media having an air inlet surface and an air outlet surface; b) treating the filter media with filter treatment means for agglomerating liquids which contact the media to promote drainage of the liquid downward along the vertical pleats; c) forcing air containing the liquid from the air inlet surface of the filter media to the air outlet surface so that liquid is collected on the filter media; and d) collecting liquid which drains from the vertical pleats.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the filter treatment means comprises a low surface energy coating material.
Claim 4
Dependent Claim
16 words
The method of claim 2 wherein the low surface energy coating material comprises an aliphatic fluorocarbon.
Claim 5
Dependent Claim
17 words
The method of claim 1 wherein the pleat spacing means are integrally formed in the filter media.
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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) | 1998-10-02 | 1999-04-03 | 1999-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-10-02 | 2003-04-03 | 2003-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-10-02 | 2007-04-03 | 2007-10-03 | $7700.00 | Window Closed / Lapsed |