Rotary mower cutter disc having replaceable knife mount shield
AssigneeDeere & Company
InventorsCraig Allen Richardson, Allan Wesley Rosenbalm, Michael Joseph Verhulst
Life of this patent
Estimating the term…
Abstract
A rotary mower cutter disc includes a replaceable knife mount shield which, in one embodiment, comprises a unitary slotted body which is received over the edge of the disc and held in place by the knife mounting bolt. The nut holding the bolt in place is located within a cylindrical cavity of the shield. In a second embodiment, the shield in made in two pieces mounted in sandwiching relationship to the mounting location of the disc having a back-turned lip defining a slot received over the edge of the disc and with the other piece being located on the side of the disc beside the lip and forming the cylindrical cavity for protecting the nut of the knife mounting bolt.
Claims8
In a cutter assembly, adapted for rotating about an upright axis passing centrally through the assembly, and including a cutter body having at least one flat, blade-mounting section extending radially inwardly toward said axis from a radially outward peripheral location of said body, containing only one mounting hole and having upper and lower surfaces, and a blade extending radially outwardly beyond the peripheral location and being secured to said cutter body solely by a bolt extending through the blade and said mounting hole and having a nut screwed thereon, the improvement comprising:
- a shield, separate from said blade and cutter body, having a bore aligned with said mounting hole and formed in upper and lower portions respectively engaging said upper and lower surfaces of said mounting section of said cutter body;
- and said upper portion of said shield including a cylindrical cavity receiving said nut.
Dependencies are inferred from the claim text.