A wheel for working the fields comprises a wheel body comprising a pair of flanges and a spacer, and a tire cover, generally annular, comprising two side walls, a tread connecting the side walls to one another and an opening opposite to the tread. The tire cover is mounted on the wheel body in such a way that the spacer is positioned across its opening. The flanges are arranged in such a way as to block the side walls of the tire cover against the spacer in the vicinity of the opening.

A structural element for a housing structure of a heating device. The structural element is at least essentially, especially completely, developed as a foam part, preferably as a thermoplastic casting foam part. In addition, a housing structure is described, which has a corresponding structural element, preferably at least two corresponding structural elements. Moreover, a heating device is described that includes at least one corresponding structural element and/or a corresponding housing structure. In addition, a method for mounting a corresponding housing structure is described.

Pneumatic tire 1 for an agricultural machine, having an axis of revolution XX and comprising a tread 7, a sole 11 situated opposite the tread 7, and two sidewalls 13, 15 connecting the tread 7 to the sole 11. The tread 7, the sole 11 and the two sidewalls 13, 15 together form a casing 17 defining a chamber 19 inside the pneumatic tire 1. At least one of the sidewalls 13, 15 comprises, in this order and in succession in a direction oriented radially from the axis of revolution XX to the outside, a proximal portion 131, an intermediate portion 133 and a distal portion 135. In the unloaded state, the intermediate portion 133 projects into the chamber 19 in a direction substantially parallel to the axis of revolution XX.

An agricultural tool element (3) comprises a non-inflated tire (9) with a tread (9-1) and a pair of sidewalls (9-2) each connected to the tread (9-1) at a respective first end portion. The element (3) additionally comprises a rigid, generally annular base (7), by means of which the tire (9, 103) is fitted on a rotary support (2, 101) of an agricultural tool. The sidewalls (9-2) are each over-molded on a peripheral portion of the rigid base (7, 107) at a second end portion, opposite the tread (9-1).

A tire for a furrow press roller comprises a sole via which the tire is mounted on a field roller support, a tread opposite to the sole, and two sidewalls connecting the tread to the sole. The sole, the tread and the sidewalls together delimit a non-inflatable chamber. The tread comprises at least one crest and two shoulders each connecting the crest to a respective sidewall. The chamber extends partially at least laterally under the shoulders and radially into the crest.

Machines that plant crop seed generally compact the seed rows with their tires. The solution to this problem is to cut or mold notches into the tire lugs in the area that would pass directly above the planted seeds and adjacent to the planted seeds. Tires could also be molded with the notches in place during the tire manufacturing process. If lateral beaming strength is needed in the tire, ribs can be formed on the inside of the tire either intermittent or continuous across the width of the tire. Notching also could be done selectively on tires after molding.

A tire for a furrow press roller comprises a sole via which the tire is mounted on a field roller support, a tread opposite to the sole, and two sidewalls connecting the tread to the sole. The sole, the tread and the sidewalls together delimit a non-inflatable chamber. The tread comprises at least one crest and two shoulders each connecting the crest to a respective sidewall. The chamber extends partially at least laterally under the shoulders and radially into the crest.

A roller for agricultural soil cultivation has at least one support body rotatably mounted about an axis of rotation and multiple compaction rings arranged spaced apart from one another next to one another on the support body and intermediate rings arranged between adjacent compaction rings. At least two intermediate rings have a different diameter and/or a different width.