Patent US5202020A successfully refreshed from Google Patents.
US5202020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid filtering device for swimming pools in particular
Assignee: Individual
•
Filing: 1992-07-20
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Granted: 1993-04-13
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Expires: 2012-07-20
Abstract
Abstract The device is made from a textile article (1), made up of at least one layer of non-woven material capable of filtering, the said article is designed to make up a pocket or sleeve, open at one end and closed at the other, this article being mounted inside an open support (2) communicating with the liquid and connected to a liquid suction and delivery system in order for the article (1) to filter the liquid.
Inventors
- 👤 Jean L. Desjoyaux
- 👤 Catherine Desjoyaux epouse Jandros
- 👤 Pierre L. Desjoyaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:32
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/23; B01D29/27; B01D29/31; B01D29/35; B01D2201/00; B01D2201/02; B01D2201/28; B01D2201/287
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
138 words
A gravity flow swimming pool filter device comprising a filter of nonwoven textile material, said filter defining substantially of funnel configuration and being opened at one water receiving first end and closed at its opposite second end, said second end being truncated, said filter being coaxially mounted internally at its first end in a cylindrical vertically disposed support means, said support means defining a housing open at a first end and a constricted drain opening at a second end, and a removable circular attaching means positioned internally of said first end of said filter to secure the water receiving first end of said filter internally of the first end of the support means wherein a portion of said first end of said filter is sandwiched between said circular attaching means and said first end of said support means.
Claim 2
Dependent Claim
138 words
A gravity flow swimming pool filter device comprising a filter of nonwoven textile material, said filter defining substantially of funnel configuration and being opened at one water receiving first end and closed at its opposite second end, said second end being truncated, said filter being coaxially mounted internally at its first end in a cylindrical vertically disposed support means, said support means defining a housing open at a first end and a constricted drain opening at a second end, and a removable circular attaching means positioned internally of said first end of said filter to secure the water receiving first end of said filter internally of the first end of the support means wherein a portion of said first end of said filter is sandwiched between said circular attaching means and said first end of said support means.
Claim 3
Dependent Claim
14 words
The filter device according to claim 1 wherein the filter has a strengthening frame.
Claim 4
Dependent Claim
20 words
The filter device according to claim 1 wherein the filter is composed of several layers of a non-woven textile layers.
Claim 5
Dependent Claim
20 words
The filter device according to claim 1 wherein the filter is composed of several layers of different non-woven textile layers.
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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) | 1996-04-12 | 1996-10-12 | 1997-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-12 | 2000-10-12 | 2001-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-12 | 2004-10-12 | 2005-04-13 | $7700.00 | Window Closed / Lapsed |