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US 12,588,581 B2Granted
Furrow opener, row unit and agricultural implement, and method of manufacturing and assembly thereof
AssigneeVäderstad Holding AB
InventorMorgan Collin
Life of this patent
Estimating the term…
Abstract
A seed furrow opener comprises a seed furrow opener arm, and a pair of seed discs rotatively connected to the seed furrow opener arm via at least one shaft. Geometrical rotational axes of the respective seed discs are non-parallel to each other, making a mutual distance between the peripheries of the seed discs non-constant. The seed furrow opener arm has a continuous cut-out for mounting the shaft, a slot extending from the cut-out to the periphery of the seed furrow opener arm, and a clamping device arranged to compress the slot and clamp the shaft.
Claims18
A seed furrow opener, comprising:
- a seed furrow opener arm, and
- a pair of seed discs rotatably connected to the seed furrow opener arm via at least one shaft unit,
- each of the seed discs having a respective geometric rotational axis, and
- the rotational axes being non-parallel to each other, so that a mutual distance between the peripheries of the seed discs is non-constant,
- further comprising:
- a continuous cut-out formed in the seed furrow opener arm, for mounting the shaft unit,
- a slot extending from the cut-out to a periphery of the seed furrow opener arm, and
- a clamping device arranged to compress the slot, so that the shaft unit is clamped in the cut-out,
- wherein the continuous cut-out and the slot extending from the cut-out is formed in a flat blank of substantially constant thickness, and wherein the blank has a pair of opposite and mutually parallel main surfaces and an edge surface extending therebetween.
6 more elements
A method of mounting a seed furrow opener, comprising:
- providing a furrow opener arm, comprising:
- a through-going cut-out formed in the seed furrow opener arm, for mounting a shaft unit,
- a slot extending from the cut-out to a periphery of the groove opener arm, and
- a clamping device arranged to compress the slot, so that the shaft unit is clamped in the cut-out;
- wherein the through-going cut-out and the slot extending from the cut-out is formed in a flat blank of substantially constant thickness, and wherein the blank has a pair of opposite and mutually parallel main surfaces and an edge surface extending therebetween;
- providing the shaft unit, comprising a mounting portion and a pair of shaft portions extending from respective opposite sides of the mounting portion and non-parallel to each other,
- arranging the mounting portion of the shaft unit in the cut-out, and
- actuating the clamping device so that the slot is compressed and the shaft unit is clamped in the cut-out.
5 more elements
A seed furrow opener comprising:
- a seed furrow opener arm;
- the seed opener arm including an end portion in the form of a flat blank having a generally constant thickness and including opposed sides and an outer edge that extends between the opposed sides;
- a cut-out formed in the blank and extending completely through the blank such that the cut-out is open on both sides of the blank;
- a slot communicatively open to said cut-out and extending from the cut-out through the blank and through the edge of the blank;
- the slot being open to both sides of the blank and dividing a portion of the blank into first and second portions that lie adjacent the slot;
- a shaft unit disposed in the cut-out and including a fastening portion disposed in the cut-out between the sides of the blank, and a pair of shaft portions that project outwardly from the cut-out on both sides of the blank;
- at least one seed disc mounted on the pair of shaft portions;
- and
- a clamp structure engaging the first and second portions that lie on opposite sides of the slot and which draw the first and second portions towards each other, narrowing the slot and causing the cut-out to close around the fastening portion of the shaft and clamp the shaft in the cut-out.
6 more elements
Dependencies are inferred from the claim text.