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US 9,950,569 B2Granted
Farm tyre with protective caps
AssigneeBridgestone Corporation
InventorsPaolo Francesco Rizzo, Fabrizio Peretti
Life of this patent
Estimating the term…
Abstract
A farm tire including a carcass; a tread supported by the carcass and having a number of lugs; a tread belt interposed between the carcass and the tread, and having an outer tread ply and an inner tread ply, which are superimposed and each have a number of metal cords embedded in a rubber strip; the tire. The farm tire also includes two tread ply wedges, each interposed between the lateral ends of the two tread plies; and protective caps covering the two ends of each of the tread plies, each made of rubber and folded into a ‘U’ about the respective ply end; wherein the protective cap of the inner tread ply is partly defined by an outer appendix of the corresponding tread ply wedge.
Claims24
A farm tyre comprising:
- a carcass comprising at least two superimposed body plies;
- a tread supported by the carcass and having a number of lugs projecting from a tread base;
- a tread belt interposed between the carcass and the tread, and comprising an outer tread ply and an inner tread ply, which are superimposed, present respective lateral ends and each comprising a number of metal cords embedded in a rubber strip;
- and
- two tread ply wedges, each interposed between and locally diverging the respective lateral ends of the outer tread ply and the inner tread ply;
- wherein each lateral end of each tread ply is covered with a corresponding protective cap, each made of rubber and folded into a ‘U’ about the end;
- wherein each tread ply wedge comprises an outer appendix that is folded about the corresponding end of the inner tread ply to form the protective cap of the inner tread ply so that each protective cap is integrated in the corresponding tread ply wedge;
- wherein each tread ply wedge comprises:
- a thick central body interposed between the two tread plies, the outer appendix is thinner than the central body and is folded about the corresponding end of the inner tread ply to form the corresponding protective cap;
- and an inner appendix, which is located on an opposite side of the central body with respect to the outer appendix and is thinner than the central body and is interposed between the two tread plies;
- wherein the outer appendix of each tread ply wedge has a same thickness as the inner appendix;
- and
- wherein a width of the outer appendix of each tread ply wedge is over 10 mm.
10 more elements
A farm tyre comprising:
- a carcass comprising at least two superimposed body plies;
- a tread supported by the carcass and having a number of lugs projecting from a tread base;
- a tread belt interposed between the carcass and the tread, and comprising an outer tread ply and an inner tread ply, which are superimposed, present respective lateral ends and each comprising a number of metal cords embedded in a rubber strip;
- and
- two tread ply wedges, each interposed between and locally diverging the respective lateral ends of the outer and inner tread plies;
- wherein each end of each tread ply is covered with a corresponding protective cap made of rubber and folded into a ‘U’ about the respective end;
- wherein each tread ply wedge comprises an outer appendix which is folded about one end of the inner tread ply to form the protective cap so that the protective cap is integrated in the tread ply wedge;
- and
- wherein a width of the outer appendix of each tread ply wedge is over 10 mm.
6 more elements
A farm tyre comprising:
- a carcass comprising at least two superimposed body plies;
- a tread supported by the carcass and having a number of lugs projecting from a tread base;
- a tread belt interposed between the carcass and the tread, and comprising an outer tread ply and an inner tread ply, which are superimposed, present respective lateral ends and each comprise a number of metal cords embedded in a rubber strip;
- and
- two tread ply wedges, each interposed between and locally diverging the respective lateral ends of the outer and inner tread plies;
- wherein each end of each tread ply is covered with a corresponding protective cap made of rubber and folded into a ‘U’ about the respective end;
- wherein each tread ply wedge comprises an outer appendix which is folded about one end of the inner tread ply to form the protective cap so that the protective cap is integrated in the corresponding tread ply wedge;
- and
- wherein the outer appendix of each tread ply wedge is over 0.4 mm thick.
6 more elements
Dependencies are inferred from the claim text.