US4156401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed self-cleaning aquarium apparatus
Assignee: Individual
•
Filing: 1977-09-23
•
Granted: 1979-05-29
•
Expires: 1997-09-23
Abstract
Abstract A sealed liquid filled tank is carried above a liquid containing reservoir. A pump in the reservoir forces liquid upwardly through an interconnecting conduit into the tank. An overflow pipe in the tank directs the liquid back into the reservoir through filters. Fish feeding means are provided in the conduit so that food can be supplied to the tank without unsealing it.
Inventors
- 👤 William M. Ogui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:42
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/003
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
158 words
A sealed self-cleaning aquarium comprising a liquid receiving substantially sealed tank, a liquid receiving reservoir beneath the tank, a submerged pump carried within the reservoir, an inlet and an outlet port on the pump, an inlet pipe connected at one end to the inlet port of the pump and in communication with the interior of the tank, an outlet conduit carried within the tank around the outlet pipe and spaced therefrom said outlet conduit being in communication with the outside of the tank through said bottom opening at the bottom thereof, a tray carried beneath the tank and the outlet conduit and between the tank and the reservoir to receive liquid coming from the tank, at least one opening in the bottom of the tray overlying the reservoir and filters disposed beneath the tray openings and in communication with the interior of the reservoir to receive liquid coming from the tray opening and direct it into the reservoir.
Claim 2
Dependent Claim
158 words
A sealed self-cleaning aquarium comprising a liquid receiving substantially sealed tank, a liquid receiving reservoir beneath the tank, a submerged pump carried within the reservoir, an inlet and an outlet port on the pump, an inlet pipe connected at one end to the inlet port of the pump and in communication with the interior of the tank, an outlet conduit carried within the tank around the outlet pipe and spaced therefrom said outlet conduit being in communication with the outside of the tank through said bottom opening at the bottom thereof, a tray carried beneath the tank and the outlet conduit and between the tank and the reservoir to receive liquid coming from the tank, at least one opening in the bottom of the tray overlying the reservoir and filters disposed beneath the tray openings and in communication with the interior of the reservoir to receive liquid coming from the tray opening and direct it into the reservoir.
Claim 3
Dependent Claim
39 words
An aquarium according to claim 1 in which the height of the inlet pipe within the tank will cause the liquid within the tank to displace any air between the said liquid and the bottom surface of the cover.
Claim 4
Dependent Claim
53 words
An aquarium according to claim 1 in which a baffle is carried upon the upper end of the inlet pipe, said baffle extending coaxially around the inlet pipe and the outlet conduit and spaced therefrom, and an opening in the top of the baffle in register with the top of the inlet pipe.
Claim 5
Dependent Claim
41 words
An aquarium according to claim 3 in which the baffle is formed with an outwardly extending flange located beneath but spaced from the bottom of the cover to direct liquid coming from the inlet pipe toward the sides of the tank.
Claim 6
Dependent Claim
31 words
An aquarium according to claim 4 in which the outlet conduit is carried at its lower end within the tank opening and is spaced at its upper end from the baffle.
Claim 7
Dependent Claim
44 words
An aquarium according to claim 5 in which the inlet pipe is provided with an elongated flexible tube having one end in communication with the interior of the inlet pipe beneath the tank and a closure on the free end of the flexible tube.
Claim 8
Dependent Claim
26 words
An aquarium according to claim 6 in which the inlet pipe is provided with a valve adjacent the flexible tube end in communication with said pipe.
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) | 1982-05-28 | 1982-11-27 | 1983-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-28 | 1986-11-27 | 1987-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-28 | 1990-11-27 | 1991-05-29 | $7700.00 | Window Closed / Lapsed |