US4511061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stirrer-feeder for pneumatic distributors drills
Assignee: Gaspardo Seminatrici SpA
•
Filing: 1983-04-25
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Granted: 1985-04-16
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Expires: 2003-04-25
Abstract
Abstract A stirrer-feeder for pneumatic seed distributors includes a rotating body which is placed on the inside of a seed-holding tank and which is provided with flexible extensions that gliding next to holes provided on a distributor disk which is also in the tank. The extensions have the function of detaching from the holes knots of seeds that may have formed, in such a manner as to make only one seed engage in each hole.
Inventors
- 👤 Luigi Gaspardo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:24
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/04; A01C7/042; A01C7/044; A01C7/0443; A01C7/046; A01C7/0445
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
180 words
A stirr-feeder for seeds, comprising: a housing (1) defining a space; a disc (4) rotatably mounted in said space and dividing said space into a seed chamber (2) on one side of said disc adapted to receive a supply of seeds, and a reduced pressure chamber (3) on an opposite side of said disc adapted to be subject to a reduced pressure, said disc having a plurality of holes (6) therethrough distributed around said disc near an outer periphery thereof; a star-shaped body (8) rotatably mounted to said housing and disposed in said seed chamber for rotation in said seed chamber, said body having a plurality of radial flexible extensions, said body disposed in said seed chamber so that flexible extensions glide adjacent said holes as said holes pass said body with rotation of said disc; and drive means engaged with said star-shaped body for rotating said star-shaped body with rotation of said disc whereby seeds in said seed chamber are stirred by said radial flexible extension to cause no more than one seed to be engaged with each hole.
Claim 2
Dependent Claim
180 words
A stirr-feeder for seeds, comprising: a housing (1) defining a space; a disc (4) rotatably mounted in said space and dividing said space into a seed chamber (2) on one side of said disc adapted to receive a supply of seeds, and a reduced pressure chamber (3) on an opposite side of said disc adapted to be subject to a reduced pressure, said disc having a plurality of holes (6) therethrough distributed around said disc near an outer periphery thereof; a star-shaped body (8) rotatably mounted to said housing and disposed in said seed chamber for rotation in said seed chamber, said body having a plurality of radial flexible extensions, said body disposed in said seed chamber so that flexible extensions glide adjacent said holes as said holes pass said body with rotation of said disc; and drive means engaged with said star-shaped body for rotating said star-shaped body with rotation of said disc whereby seeds in said seed chamber are stirred by said radial flexible extension to cause no more than one seed to be engaged with each hole.
Claim 3
Dependent Claim
47 words
A stirrer-feeder according to claim 1, wherein said drive means comprise a plurality of pins fixed to said disc and distributed therearound, said pins extending into said seed chamber and positioned to engage said radial flexible extensions with rotation of said disc to rotate said star-shaped body.
Claim 4
Dependent Claim
36 words
A stirrer-feeder according to claim 2, including a shaft connected to said housing and extending into said seed chamber toward said disc, said star-shaped body rotatably mounted to said shaft for free rotation on said shaft.
Claim 5
Dependent Claim
16 words
A stirrer-feeder according to claim 3, wherein said radial flexible extensions are made of soft rubber.
Claim 6
Dependent Claim
46 words
A stirrer-feeder according to claim 4, including a further shaft rotatably mounted to said housing and extending through said space, said disc fixed to said further shaft, said further shaft being radially spaced from said first-mentioned shaft with respect to an axis of said further shaft.
References Cited (Backward Citations)
US2510658A
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US3233552A
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US3347426A
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US4148414A
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US4148414B1
Cited
FR2414287A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |