Patent US3757739A successfully refreshed from Google Patents.
US3757739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isolation aquarium
Assignee: Individual
•
Filing: 1972-03-27
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Granted: 1973-09-11
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Expires: 1992-03-27
Abstract
Abstract An isolation aquarium consisting of a housing carrying a plurality of tanks detachably mounted therein, a filter case detachably mounted in the housing for each of the tanks, a system powered by compressed air for constantly withdrawing water from each of the tanks, circulating it through its associated filter and returning it to the tank, the water being aerated during its circulation and filtering, mechanism for terminating the circulation but not the aeration of any tank the filter case of which is removed for servicing, and mechanism for terminating the circulation and filtration systems of any tank removed from the housing for any purpose.
Inventors
- 👤 K Whitener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:08
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/003
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
159 words
An aquarium comprising: a. a housing, b. a series of transparent tanks carried by said housing, depending from said housing and opening upwardly thereinto, c. a series of open-topped filter cases supported in said housing, each above one of said tanks, and having an outlet opening disposed directly above its associated tank, d. filter material in said filter cases, and e. circulating means operable to draw water from all of said tanks and to deposit said water from each tank into the top of its associated filter case, said circulating means comprising means operable to deliver air under pressure, a series of spouts directed respectively into the tops of said filter cases, a series of conduits connecting said air delivery means respectively to said spouts, an air-operated pump interposed in each of said conduits and operable to create a suction, and a conduit interconnected to the suction side of each of said pumps and depending into the associated tank.
Claim 2
Dependent Claim
159 words
An aquarium comprising: a. a housing, b. a series of transparent tanks carried by said housing, depending from said housing and opening upwardly thereinto, c. a series of open-topped filter cases supported in said housing, each above one of said tanks, and having an outlet opening disposed directly above its associated tank, d. filter material in said filter cases, and e. circulating means operable to draw water from all of said tanks and to deposit said water from each tank into the top of its associated filter case, said circulating means comprising means operable to deliver air under pressure, a series of spouts directed respectively into the tops of said filter cases, a series of conduits connecting said air delivery means respectively to said spouts, an air-operated pump interposed in each of said conduits and operable to create a suction, and a conduit interconnected to the suction side of each of said pumps and depending into the associated tank.
Claim 3
Dependent Claim
45 words
An aquarium as recited in claim 1 wherein said spouts, pumps and conduits are all mounted on and supported by said housing, said filter cases and tanks being individually detachable from said housing, and having no sealed connection with any element of said circulating means.
Claim 4
Dependent Claim
80 words
An aquarium as recited in claim 1 wherein said tanks are individually detachable from said housing, and with the addition of: a. a valve interconnected in each of said conduits intermediate the pump thereof and said air delivery means, and b. valve operating means responsive to the presence of the associated tank in said housing to close said valve when said tank is detached from said housing, and to open said valve when said tank is attached to said housing.
Claim 5
Dependent Claim
31 words
An aquarium as recited in claim 3 wherein each of said valves is float-operated by means including a buoyant float adapted to be supported by the water in the associated tank.
Claim 6
Dependent Claim
83 words
An aquarium as recited in claim 1 wherein said filter cases are individually detachable from said housing, and with the addition of: a. a valve interconnected in each of said conduits intermediate the pump thereof, and the associated spout, and b. valve operating means responsive to the presence of the associated filter case in said housing to close said valve when said filter case is removed from said housing, and to open said valve when said filter case is inserted in said housing.
Claim 7
Dependent Claim
49 words
An aquarium as recited in claim 5 wherein said valve operating means includes a mechanical valve operator comprising an arm having a normal position in which said valve is closed, but engageable and movable by said filter case as it is inserted in said housing to open said valve.
Claim 8
Dependent Claim
123 words
An aquarium as recited in claim 1 wherein said tanks and said filter cases are individually removable from said housing, and with the addition of: a. a first normally closed valve interposed in each of said conduits intermediate the pump thereof and said air delivery means, b. means mechanically responsive to the presence of the associated tank in said housing to close said first valve when said tank is inserted in said housing, c. a second nomally closed valve interposed in each of said conduits intermediate the pump thereof and the associated spout, and d. means mechanically responsive to the presence of the associated filter case in said housing to open said second valve when said filter case is inserted in said housing.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |