US4279220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic feeding device
Assignee: Individual
•
Filing: 1979-11-15
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Granted: 1981-07-21
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Expires: 1999-11-15
Abstract
Abstract An automatic feeding device comprising a storage bin or hopper containing dry fodder, a feed delivery port or aperture at the bottom of the storage bin, a feed delivery mechanism forcing a quantity of feed through the aperture, and a prime mover, such as an electric motor, driving the feed delivery mechanism. The electric motor is controlled by a timer which, at a pre-set time, causes a delivery of a first quantity of feed through the delivery port, and, after a pause, causes a delivery of a second quantity of feed. The storage bin may be cylindrical in shape, the feed delivery port being at the far end of a spiral or tangential chute extending from the storage bin, the delivery mechanism comprising at least one rotatably driven elongated thin flat flexible blade. The automatic feeding device may also provide a feed agitator stirring the feed in the storage bin above the delivery mechanism.
Inventors
- 👤 Walter Kukurba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:45
CPC Classifications
A; A01; A01K; A01K5/00; A01K5/02; A01K5/0291; A01K61/00; A01K61/80; A01K61/85; Y; Y02; Y02A; Y02A40/00; Y02A40/80; Y02A40/81; Y10; Y10S; Y10S119/00; Y10S119/902
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
222 words
An animal feeding device comprising a feed storage bin in the form of an enclosure having a cylindrical side wall and a flat bottom wall, a rotatable shaft vertically extending from said bottom wall, means for driving said shaft in rotation, at least one elongated rectangular flexible blade mounted on said shaft and extending generally radially from said shaft, said flexible blade being disposed with an edge in sliding engagement with said bottom wall and a tip in engagement with said side wall, said blade having a length greater than the radial distance from said shaft to said cylindrical wall for causing said blade to be normally elastically bowed in the direction of rotation of said shaft, a spiral enclosed channel disposed at a portion of the periphery of said enclosure, said spiral channel having a floor disposed coplanar with said flat bottom wall, a slot for accepting the tip of said blade formed in said cylindrical side wall and placing said spiral channel in communication with the interior of said enclosure whereby at least the tip of said blade extends into said spiral channel as said blade rotates, an outlet aperture at the end of said spiral channel, power drive means for rotating said shaft, and timing means for energizing said power drive means at timed intervals for predetermined time durations.
Claim 2
Dependent Claim
222 words
An animal feeding device comprising a feed storage bin in the form of an enclosure having a cylindrical side wall and a flat bottom wall, a rotatable shaft vertically extending from said bottom wall, means for driving said shaft in rotation, at least one elongated rectangular flexible blade mounted on said shaft and extending generally radially from said shaft, said flexible blade being disposed with an edge in sliding engagement with said bottom wall and a tip in engagement with said side wall, said blade having a length greater than the radial distance from said shaft to said cylindrical wall for causing said blade to be normally elastically bowed in the direction of rotation of said shaft, a spiral enclosed channel disposed at a portion of the periphery of said enclosure, said spiral channel having a floor disposed coplanar with said flat bottom wall, a slot for accepting the tip of said blade formed in said cylindrical side wall and placing said spiral channel in communication with the interior of said enclosure whereby at least the tip of said blade extends into said spiral channel as said blade rotates, an outlet aperture at the end of said spiral channel, power drive means for rotating said shaft, and timing means for energizing said power drive means at timed intervals for predetermined time durations.
Claim 3
Dependent Claim
15 words
The feeding device of claim 1 further comprising a trough disposed below said outlet port.
Claim 4
Dependent Claim
18 words
The feeding device of claim 1 further comprising feed stirring means mounted on said shaft above said blade.
Claim 5
Dependent Claim
39 words
The feeding device of claim 3 wherein said feed stirring means comprises at least one substantially rigid blade having a U-shaped central portion extending vertically downwardly and one substantially rigid blade having a U-shaped central portion extending vertically upwardly.
Claim 6
Dependent Claim
50 words
The feeding device of claim 4 further comprising a stationary plate disposed between said flexible blade and said feed stirring means, said stationary plate separating said enclosure into upper and lower compartments, and a substantially large opening in said plate placing said upper compartment in communication with said lower compartment.
Claim 7
Dependent Claim
64 words
The feeding device of claim 1 wherein said timing means engages said power drive means to rotate said blade to deliver through said outlet aperture a fraction of the feed required for a complete feeding followed by a delivery of the remaining of the feed required for a complete feeding, said deliveries being separated by a time interval during which no feed is delivered.
Claim 8
Dependent Claim
30 words
The feeding device of claim 1 wherein said shaft drive means, said driving means and said timing means are mounted in a separate compartment disposed below said flat bottom wall.
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) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |