Seed planter
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United States of America Patent
Stats
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Jun 17, 2008
Grant Date -
N/A
app pub date -
Jul 27, 2006
filing date -
Aug 17, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A seed planter has at least one rock shaft carrying a rank of planter assemblies. Each planter assembly includes a torsion joint assembly connected to the rock shaft, a planting equipment linkage connected to the torsion joint, a planting equipment yoke connected to the linkage and planting tools or equipment connected to the yoke. The planting equipment linkage is a modified parallelogram linkage that keeps the planting equipment in consistent alignment over the ground even as the seed planter traverses irregular terrain. The seed planter includes a stop mechanism that limits the amount of permissible rotation of the torsion joint on the rock shaft. A stop plate is attached to the torsion joint housing for rotation with it relative to the rock shaft. An edge of the stop plate faces the rock shaft and has a jaw opening defined by upper and lower jaws that at least partially encompasses the rock shaft. Upon rotation beyond limits, the jaws intercept and lock on the rock shaft surfaces to stop further rotation between the torsion joint housing and the rock shaft. The weight of the planter assembly is thereafter carried by the stop plate and the rock shaft and not by torsion spring elements of the torsion joint assembly.

First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
TRUAX COMPANY INC | 4300 QUEBEC AVENUE NORTH NEW HOPE MN 55428 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Truax, James R | Minneapolis, MN | 6 | 110 |
Willmore, James A | Eden Prairie, MN | 4 | 27 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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