US4016080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid filter and purifying apparatus
Assignee: Individual
•
Filing: 1975-08-14
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Granted: 1977-04-05
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Expires: 1995-08-14
Abstract
Abstract A fluid filter and purifying apparatus located within a supportive structure wherein substantially all of the fluid passing therethrough is caused to be conducted through two separate mediums, a stranded fibrous medium in order to remove particulate matter and activated carbon in order to remove chemical pollutants. The granulated carbon is located within a plurality of elongated envelopes with a preferential oval cross-section. Each of the envelopes are mounted within the frame in a spaced apart manner forming a gap between adjacent envelopes. The major axis of each oval shaped envelope is inclined at an acute angle, preferably 45°, with respect to the direction of fluid flow. Located within each gap may be a quantity of stranded glass fibers which is to remove particulate matter from the fluid.
Inventors
- 👤 Douglas J. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:45
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/28; C02F1/283; B; B01; B01D; B01D46/00; B01D46/10; B01D53/00; B01D53/02; C02F2201/00; C02F2201/002; C02F2201/006
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
137 words
A fluid filter and purifying apparatus comprising: a supportive structure; a plurality of elongated envelopes, each said envelope terminating in a first end and a second end, each said envelope having a longitudinal axis, said envelopes connected to said supportive structure, said envelopes being spaced from each other forming a gap between adjacent envelopes, each said envelope being positioned to be inclined with respect to the direction of the fluid flow through said supportive structure, each said envelope being adapted to retain a quantity of granulated carbon, each said gap being adapted to contain a quantity of loosely packed fibrous material; and an open mesh screening placed across said supportive structures and attached to both the front side and the back side of said supportive structure, thereby sandwiching therebetween said carbon containing envelope and said fibrous material.
Claim 2
Dependent Claim
137 words
A fluid filter and purifying apparatus comprising: a supportive structure; a plurality of elongated envelopes, each said envelope terminating in a first end and a second end, each said envelope having a longitudinal axis, said envelopes connected to said supportive structure, said envelopes being spaced from each other forming a gap between adjacent envelopes, each said envelope being positioned to be inclined with respect to the direction of the fluid flow through said supportive structure, each said envelope being adapted to retain a quantity of granulated carbon, each said gap being adapted to contain a quantity of loosely packed fibrous material; and an open mesh screening placed across said supportive structures and attached to both the front side and the back side of said supportive structure, thereby sandwiching therebetween said carbon containing envelope and said fibrous material.
Claim 3
Dependent Claim
17 words
The apparatus as defined in claim 1 wherein: said supportive structure being continuous forming an enclosed area.
Claim 4
Dependent Claim
19 words
The apparatus as defined in claim 2 wherein: each said longitudinal axis of said envelopes being a straight line.
Claim 5
Dependent Claim
72 words
The apparatus as defined in claim 1 wherein: each said envelope in cross-section being substantially in the shape of an ellipse with said width comprising the minor axis of the ellipse and said height comprising the major axis of said ellipse, said major axis of each said envelope being inclined at an acute angle to the direction of fluid flow, said height of each said envelope being substantially greater than said width.
Claim 6
Dependent Claim
51 words
The apparatus as defined in claim 4 wherein: the screening attached to one of said sides defines a plane and said inclination and spacing of said envelopes is such that a line perpendicular to said plane intersecting an end of one of said envelopes intersects an adjacent one of said envelopes.
Claim 7
Dependent Claim
16 words
The apparatus as defined in claim 5 wherein: each of said gaps being equal in size.
Claim 8
Dependent Claim
24 words
The apparatus as defined in claim 6 wherein: said fibrous material comprising a mass of stranded glass fibers positioned within each of said gaps.
Claim 9
Dependent Claim
22 words
The apparatus as defined in claim 7 wherein: each of said fibers within said stranded glass fibers being treated with a bactericide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |