Lightweight concave having removable grids
AssigneeDeere & Company
InventorPhilip A. Harden
Life of this patent
Estimating the term…
Abstract
The invention is directed to a concave for a rotary crop processing unit for an agricultural combine. The concave comprises a frame to which is releasably mounted a grid. The grid comprises a plurality of curved rods to which are projection welded a series of straight bars. The bars are perpendicular to the rods. The grid is held in place by a mounting assembly which is formed by six mounting ears that are welded to the frame that clamp the grid against a curved rim. A trapping lip is also used to trap one end of the grid in the frame.
Claims13
A concave for a rotary crop processing unit for an agricultural combine, the concave comprising:
- a frame having at least two longitudinally extending curved members that are coupled to one another by two laterally extending members, the frame is provided with a first mounting assembly;
- and
- at least one replaceable grid being releasably mounted to the frame by the first mounting assembly engaging the grid, the grid is provided with a plurality of longitudinally extending curved rods and a plurality of laterally extending straight bars, the straight bars are provided with an outer surface, at least one of the rods and the straight bars are provided with projections and are projection welded to one another.
A concave for a rotary crop processing unit for an agricultural combine, the concave comprising:
- a frame having at least two longitudinally extending curved members that are coupled to one another by two laterally extending members, the curved members are provided with curved rims, the frame is provided with a first mounting assembly, the first mounting assembly comprises more than two ears that are attached to the longitudinally extending members, the ears are provided with mounting bolts and mounting washers;
- and
- at least one replaceable grid being releasably mounted to the frame by the first mounting assembly engaging the grid, the grid is provided with a plurality of longitudinally extending curved rods and a plurality of laterally extending straight bars, at least one of the straight bars and the rods are provided with projections and are projection welded to one another, the mounting bolts and washers clamp the grid to the curved rim of the curved members.
A replaceable grid for a concave frame, the grid comprising:
- a plurality longitudinally extending curved rods;
- and
- a plurality of laterally extending straight bars, the straight bars are provided with an outer surface, at least one of the curved rods and the straight bars are provided with projections that are projection welded to one another.
Dependencies are inferred from the claim text.