Multiple drop seed disc

• US 6,044,779 A
• Filed: 10/13/1998
• Issued: 04/04/2000
• Est. Priority Date: 04/15/1998
• Status: Expired due to Term

• Current Assignee: Blue Leaf IP Incorporated (CNH Industrial N.V.), CNH Industrial America LLC (CNH Industrial N.V.)
• Original Assignee: Case Corporation (CNH Industrial N.V.)
• Inventors: Michalic, Joseph A., Brown, Thomas, Dunham, Lisle J., Ozers, Guntis
• Primary Examiner(s): Novosad, Christopher J.
• Application Number:
  US09/170,836
• Time in Patent Office: 539 Days
• Field of Search: 111/185, 111/184, 111/183, 111/177, 111/200, 221/211, 221/266, 221/264
• US Class Current: 111/185
• CPC Class Codes: A01C 7/046 with perforated seeding discs

Abstract

A multiple seed drop disc includes a disc member including a vacuum side and a seed side. The vacuum side includes a plurality of spaced-apart recesses formed therein. The seed side includes a plurality of clusters formed therein. Each cluster includes a plurality of openings which communicates with one of the recesses.

Claims

1. A multiple seed drop disc comprising:

a disc member including a vacuum side and seed side, the vacuum side including a plurality of spaced apart recesses formed therein, the seed side including a plurality of clusters formed therein, each cluster including a plurality of openings which communicate with one of the recesses.

3. The disc of claim 1 wherein the disc member comprises an aliphatic polyketone.

4. The disc of claim 1 wherein the disc member comprises plastic.

5. The disc of claim 1 wherein each of the recesses have a circular shape.

6. The disc of claim 1 wherein each of the clusters include four openings.

7. The disc of claim 1 wherein the seed disc includes a curved edge along the perimeter of each of the openings.

8. The disc of claim 1 wherein the openings include a chamfer.

9. The disc of claim 1 wherein the clusters are equally spaced and positioned adjacent a perimeter region of the disc.

10. The disc of claim 1 wherein the openings have a circular shape.

11. The disc of claim 1 wherein the area of each recess is substantially the same as the combined areas of the openings in a cluster.

2. The disc of claim I further comprising a plurality of wear depressions formed in the vacuum side.