Patent US3945330A successfully refreshed from Google Patents.
US3945330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seed planting unit
Assignee: Ministry of Agriculture and Rural Development
•
Filing: 1974-07-25
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Granted: 1976-03-23
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Expires: 1994-07-25
Abstract
Abstract A seed planting unit carries a seed planter that dispenses a predetermined amount of seed into the ground at predetermined intervals in response to the coupling between a ground engaging wheel supporting the unit and the drive means of the seed planter. A film dispenser is also carried by the unit for laying film on the ground over the planted seeds; and a transmission is provided for synchronizing the perforating of the film before it is laid with the dispensing of the seeds by the seed planter so that the apertures in the film are aligned with the seeds deposited in the ground.
Inventors
- 👤 Chaim Leavitt
- 👤 Yekutiel Alper
- 👤 Tzvi Gruenewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:18
CPC Classifications
A; A01; A01G; A01G13/00; A01G13/30; A01G13/37; A01C; A01C5/00; A01C5/06; A01C5/066; Y; Y10; Y10S; Y10S111/00; Y10S111/921
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
5 words
A seed planting unit comprising:
Claim 2
Dependent Claim
5 words
A seed planting unit comprising:
Claim 3
Dependent Claim
21 words
a. a support structure carrying a ground engaging wheel that rotates in response to displacement of the structure on the ground;
Claim 4
Dependent Claim
21 words
a. a support structure carrying a ground engaging wheel that rotates in response to displacement of the structure on the ground;
Claim 5
Dependent Claim
18 words
b. a seed planter carried by said structure and having operable means for depositing seeds in the ground;
Claim 6
Dependent Claim
18 words
b. a seed planter carried by said structure and having operable means for depositing seeds in the ground;
Claim 7
Dependent Claim
35 words
c. film dispenser means carried by said structure downstream of the seed planter for dispensing film and laying it on the ground over the seeds deposited by the seed planter as said structure is displaced;
Claim 8
Dependent Claim
35 words
c. film dispenser means carried by said structure downstream of the seed planter for dispensing film and laying it on the ground over the seeds deposited by the seed planter as said structure is displaced;
Claim 9
Dependent Claim
22 words
d. a film aperturing mechanism having operable means for making apertures in said film before it is laid on the ground; and
Claim 10
Dependent Claim
22 words
d. a film aperturing mechanism having operable means for making apertures in said film before it is laid on the ground; and
Claim 11
Dependent Claim
56 words
e. transmission means coupling rotation of the groung engeging wheel to the operable means of both the seed planter and the film aperturing mechanism for synchronizing their operation such that the apertures in the film laid on the ground by the film dispenser are aligned with the seeds deposited in the ground by the seed planter.
Claim 12
Dependent Claim
56 words
e. transmission means coupling rotation of the groung engeging wheel to the operable means of both the seed planter and the film aperturing mechanism for synchronizing their operation such that the apertures in the film laid on the ground by the film dispenser are aligned with the seeds deposited in the ground by the seed planter.
Claim 13
Dependent Claim
89 words
A seed planting unit according to claim 1 wherein said unit furthermore comprises a pair of transport wheels mounted on said structure rearwardly of said dispenser in the direction of travel of said unit and so located as to pass over respective longitudinal edges of the laid film, and a centrally disposed pressure wheel mounted on said structure rearwardly of said dispenser in the direction of travel of said unit intermediate said transport wheels and so located as to pass over a central axial portion of the laid film.
Claim 14
Dependent Claim
36 words
A seed planting unit according to claim 1 wherein said aperturing mechanism is mounted on a rotary axle journalled with respect to said structure and coupled to said transmission means so as to be driven thereby.
Claim 15
Dependent Claim
33 words
A seed planting unit according to claim 3 wherein said aperturing mechanism is constituted by an electric heating element rotatably displaceable by said axle into and out of engagement with adjacently located film.
Claim 16
Dependent Claim
19 words
A seed planting unit according to claim 4 wherein said heating element is constituted by a U-shaped open loop.
Claim 17
Dependent Claim
51 words
A seed planting unit according to claim 1 wherein said transmission means includes a positive drive linking rotation of the ground engaging wheel to the operable means of the seed planter, and a positive drive linking the operable means of the seed planter to the operable means of the aperturing mechanism.
References Cited (Backward Citations)
US3103186A
Cited
US3180290A
Cited
US3175524A
Cited
US3315623A
Cited
US3306239A
Cited
US3559599A
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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) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |