Patent US3662889A successfully refreshed from Google Patents.
US3662889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water cleaner
Assignee: Individual
•
Filing: 1970-06-18
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Granted: 1972-05-16
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Expires: 1990-06-18
Abstract
Abstract The present invention provides a water cleaner for automatically circulating the water body in a pond or the like for keeping of fishes for amusement and/or food for filtration, purification, and aeration. A filter unit driven by a motor may be located at any depth and position in the pond in a very stabilized manner. A lighting unit is installed above the water surface so as to facilitate the feed, viewing, and luring fishes at night.
Inventors
- 👤 Shigehiro Takarabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:41
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/045
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
208 words
A water cleaner used in a pond or the like including an electrical unit installed At the top, a filter unit installed at the bottom, and a water discharge port installed at the midportion of a vertically extending hollow main pipe; a lamp and a motor housed in said electrical unit; vanes for pumping up the water disposed in an inner cylinder coaxially disposed in said filter unit and driven by a drive shaft coupled to said motor; a filter material being packed in said filter unit, said filter unit being readily dismountable; and leg members angularly movably fixed to the four corners of the bottom of said filter unit; including a plurality of lamps for lighting fixed to the free ends of brackets extending outwardly from said electrical unit; and said filter unit comprising an outer cylinder having a bottom, said filtering material packed into said outer cylinder, a cover detachably fitted over said outer cylinder, said inner cylinder coaxially fitted into said outer cylinder, and said main pipe coaxially fitted through said cover into said outer cylinder and over or into said inner cylinder so as to be readily detached therefrom, and said water discharge port comprising a pipe extending horizontally outwardly of said main pipe.
Claim 2
Dependent Claim
208 words
A water cleaner used in a pond or the like including an electrical unit installed At the top, a filter unit installed at the bottom, and a water discharge port installed at the midportion of a vertically extending hollow main pipe; a lamp and a motor housed in said electrical unit; vanes for pumping up the water disposed in an inner cylinder coaxially disposed in said filter unit and driven by a drive shaft coupled to said motor; a filter material being packed in said filter unit, said filter unit being readily dismountable; and leg members angularly movably fixed to the four corners of the bottom of said filter unit; including a plurality of lamps for lighting fixed to the free ends of brackets extending outwardly from said electrical unit; and said filter unit comprising an outer cylinder having a bottom, said filtering material packed into said outer cylinder, a cover detachably fitted over said outer cylinder, said inner cylinder coaxially fitted into said outer cylinder, and said main pipe coaxially fitted through said cover into said outer cylinder and over or into said inner cylinder so as to be readily detached therefrom, and said water discharge port comprising a pipe extending horizontally outwardly of said main pipe.
Claim 3
Dependent Claim
47 words
A water cleaner of the character described in claim 1 wherein said electrical unit at the top of said vertically extending main pipe has two switches for turning on and off said motor and said lamps respectively and is enclosed by a transparent glove with a cover.
Claim 4
Dependent Claim
45 words
A water cleaner of the character described in claim 1 wherein each of said leg members has an externally threaded rod and an internally threaded member so that the latter may be axially slightly moved toward and away from the bottom of said filter unit.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |