US3791322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for introducing plant growth stimulants, particularly fertilizers
Assignee: Individual
•
Filing: 1972-02-08
•
Granted: 1974-02-12
•
Expires: 1992-02-08
Abstract
Abstract A device for introducing substances, such as fertilizers in the soil includes a wheeled frame supporting a dispenser with a soil penetrating tube and a soil working member that subsequently agitates the soil to prevent the substances from escaping the soil.
Inventors
- 👤 Der Lely A Van
- 👤 C Bom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:47
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
174 words
An agricultural attachment device for introducing plant stimulants into soil comprising a movable frame, and a stimulant dispenser supported on said frame, said dispenser comprising a plurality of soil penetrating injecting tubes that extend below said frame into the ground to dispense said stimulants, rotatable cultivating tool means being mounted on said frame to work the soil in front of said injecting tubes and driving means for operating said cultivating tool means, said cultivating tool means comprising a plurality of soil working members rotatable about a substantially horizontal shaft and said shaft extending transversely of the direction of travel of said device, a curved screening hood on said attachment positioned above said soil working members, the front of said hood being connected to said frame and the rear portion of said hood extending rearwardly and downwardly to contact the ground said injecting tubes being passed through the rear portion of said screening hood and said tubes being secured to said hood and extending below same into the loose soil worked by said tool means.
Claim 2
Dependent Claim
174 words
An agricultural attachment device for introducing plant stimulants into soil comprising a movable frame, and a stimulant dispenser supported on said frame, said dispenser comprising a plurality of soil penetrating injecting tubes that extend below said frame into the ground to dispense said stimulants, rotatable cultivating tool means being mounted on said frame to work the soil in front of said injecting tubes and driving means for operating said cultivating tool means, said cultivating tool means comprising a plurality of soil working members rotatable about a substantially horizontal shaft and said shaft extending transversely of the direction of travel of said device, a curved screening hood on said attachment positioned above said soil working members, the front of said hood being connected to said frame and the rear portion of said hood extending rearwardly and downwardly to contact the ground said injecting tubes being passed through the rear portion of said screening hood and said tubes being secured to said hood and extending below same into the loose soil worked by said tool means.
Claim 3
Dependent Claim
38 words
A device as claimed in claim 1, wherein the ends of said injecting tubes are bent up to the rear to terminate in a substantially horizontal direction below the rear portion of said hood which contacts the ground.
Claim 4
Dependent Claim
39 words
A device as claimed in claim 1, wherein said soil working members are driven to move through the ground in a direction counter to the movement of said device whereby soil is thrown upwardly above said soil working members.
Claim 5
Dependent Claim
20 words
A device as claimed in claim 1, wherein the injecting tubes are arranged side by side in a transverse row.
Claim 6
Dependent Claim
39 words
A device as claimed in claim 1, wherein a grating is supported on said frame above said working members and below said screening hood to separate coarse parts from soil thrown upwardly and rearwardly by said soil working members.
Claim 7
Dependent Claim
20 words
A device as claimed in claim 1, wherein said screening hood extends substantially across the entire width of the device.
Claim 8
Dependent Claim
15 words
A device as claimed in claim 1, wherein said dispenser is secured to said hood.
Claim 9
Dependent Claim
53 words
A device as claimed in claim 7, wherein the front of said screening hood is pivotally connected to said frame and lifting means is secured to the hood to the rear of said front, whereby the height of the injecting tubes can be regulated by pivoting said hood Upwardly about the pivot connection.
Claim 10
Dependent Claim
49 words
A device as claimed in claim 1, wherein a ground wheel is mounted on said frame to the rear of said tool means and said ground wheel supports said device through an adjustable connection whereby the working depth of said tool means can be controlled by adjusting said connection.
Claim 11
Dependent Claim
25 words
A device as claimed in claim 1, wherein said frame has coupling means for connecting said device to a three point lift of a tractor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |