Metal cord
AssigneeTokyo Rope Mfg. Co., Ltd.
InventorsKoji Hatakeyama, Masahiro Kusuda
Life of this patent
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Abstract
An open type metal cord has a plurality of cord units each constituted by at least one preformed metal wire member. The wire members within a given cord unit have the same preforming ratio but have a different ratio from that of the wire members within another cord unit. A difference between the largest preforming ratio and the smallest preforming ratio in cord units falls within the range of 0.20 to 0.40. In this case, the maximum preforming ratio possible for the wire members is 1.65 and the minimum preforming ratio possible for the wire members is 1.05. A total number of wire members constituting a metal cord according to the present invention is 3 to 5.
Claims6
An open type metal cord comprising:
- a plurality of cord units each including at least one preformed metal wire member;
- said at least one preformed metal wire member of each of said respective cord units having the same preforming ratio, the preforming ratio of said at least one wire member of a given one of said plurality of cord units being different from that of said at least one wire member of another one of said plurality of cord units;
- a difference between the largest preforming ratio and the smallest preforming ratio of said preformed metal wire members falling within a range of 0.20 to 0.040;
- the maximum preforming ratio being 1.65, and the minimum preforming ratio being 1.05;
- and
- the total number of preformed metal wire members constituting said metal cord being 3 to 5.
Dependencies are inferred from the claim text.