US3722685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aquatic filtration system
Assignee: Individual
•
Filing: 1971-05-28
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Granted: 1973-03-27
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Expires: 1991-05-28
Abstract
Abstract The disclosed aquatic life support system provides an apertured flow control plate which defines a lower chamber of an aquarium tank. A filtered water return and a water intake means are both located within this lower chamber. A pump draws contaminated water through the intake and drives the contaminated water through a filter. The output side of the filter is connected to the water return underneath the apertured plate.
Inventors
- 👤 H Orensten
- 👤 V Orensten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:50
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/045
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
250 words
A purification system for cleansing the water in an aquarium tank comprising, in combination: a. a tank with a bottom, side walls, and an open top, said tank being constructed and arranged to hold a body of water, b. a flow control plate horizontally disposed above the bottom of said tank defining a first chamber within said tank above said plate and a second chamber within said tank beneath said plate and above the bottom of said tank, c. perforations in said flow control plate constructed and arranged whereby unfiltered liquid may flow into said second chamber from said first chamber by passing through said perforations, d. first nozzle water inlet means located at a first end of said second chamber and arranged to direct water the length of said second chamber and parallel to the bottom thereof, e. outlet means located at a second end of said second chamber opposite said inlet means and arranged to receive water directed thereto by said inlet means, f. filter medium means within a closed filter container with an inlet and outlet and located externally of said tank with the inlet to said container in fluid communicatIon with said second chamber outlet means, g. pump means in communication with the outlet of said filter container and said first nozzle water inlet means whereby flow of water from said inlet means to said outlet means within said second chamber induces flow from said first chamber to said second chamber through said flow control plate.
Claim 2
Dependent Claim
250 words
A purification system for cleansing the water in an aquarium tank comprising, in combination: a. a tank with a bottom, side walls, and an open top, said tank being constructed and arranged to hold a body of water, b. a flow control plate horizontally disposed above the bottom of said tank defining a first chamber within said tank above said plate and a second chamber within said tank beneath said plate and above the bottom of said tank, c. perforations in said flow control plate constructed and arranged whereby unfiltered liquid may flow into said second chamber from said first chamber by passing through said perforations, d. first nozzle water inlet means located at a first end of said second chamber and arranged to direct water the length of said second chamber and parallel to the bottom thereof, e. outlet means located at a second end of said second chamber opposite said inlet means and arranged to receive water directed thereto by said inlet means, f. filter medium means within a closed filter container with an inlet and outlet and located externally of said tank with the inlet to said container in fluid communicatIon with said second chamber outlet means, g. pump means in communication with the outlet of said filter container and said first nozzle water inlet means whereby flow of water from said inlet means to said outlet means within said second chamber induces flow from said first chamber to said second chamber through said flow control plate.
Claim 3
Dependent Claim
32 words
Purification system according to claim 1 wherein said pump means has a capacity of at least 5V per hour, where V is the volume of the body of water in said tank.
Claim 4
Dependent Claim
75 words
Purification system according to claim 1 wherein: a. said tank is horizontally elongated, b. said second chamber contains at least about 3 percent of the total volume of the tank, and said second end of said second chamber is defined by a vertically extending baffle means, c. said perforations in said flow control plate are about 1-10 millimeters in size, and d. said outlet means comprises a branched conduit having apertures in the branches thereof.
Claim 5
Dependent Claim
83 words
Purification system according to claim 3 wherein said water inlet means is an apertured conduit positioned along said first end of said second chamber; said outlet means is a Y-shaped conduit with a water receiving aperture at the tip of each branch of the Y, the tip of at least one of the branches being positioned adjacent a side wall of said tank; and said baffle means is a V-shaped wall interposed between one extreme end of the tank and said outlet means.
Claim 6
Dependent Claim
28 words
Purification system according to claim 3 wherein said water inlet means and said outlet means are spaced apart more than half the elongated horizontal dimension of said tank.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |