Single strand metal cord and method of making
AssigneeThe Goodyear Tire & Rubber Company
InventorsDennis R. Brandyberry, Kenneth M. Kot
Life of this patent
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Abstract
A single strand cord of single filaments having similar diameter lay length and direction with at least one core filament positioned with the filaments in the next layer and filaments laid on the cord in one layer positioned with another layer.
Claims26
A metallic cord for reinforcing elastomers having single filaments of similar diameter, lay length and lay direction comprising:
- a plurality of filaments laid on a core of two or more filaments which core filaments are twisted about each other, at least one filament in the core being in a layer of filaments formed by it and the plurality of filaments, the layer of filaments enclosing the remainder of core filaments.
A metallic cord of single filaments having a core and additional single filaments all of a similar diameter, lay length and lay direction comprising:
- a core of N number of filaments twisted about each other and N+X number of filaments laid on the core filaments, at least one filament of the core located a distance from the center of the cord equal to the distance from the center of the cord to the N+X number of filaments laid thereon, all of the filaments in the layer touching the group formed by the remainder of the core filaments where N>1 and 1<x<6.
The cord defined in claims 5 or 11 wherein N=5, X=3 and Y=6.
A method of making a metallic cord in a single operation having single filaments with similar diameters, lay lengths and lay direction resulting from twisting all of the filaments with a single twister comprising the steps of:
- paying off all of the filaments of the cord to the single twister,
- gathering a first group of the filaments to form a core,
- first twisting filaments of the core about each other,
- second applying turns to a second group of filaments to lay them on the core filaments
- with at least one filament in the core located a distance from the center of the cord equal to the distance from the center of the cord to each of the second group of filaments.
A method of making a metallic cord in a single operation having single filaments with similar diameters, lay lengths and lay direction comprising the steps of:
- first twisting N number of filaments about each other to form a core where N>1;
- and
- applying the same turns to N+X number of filaments to lay the filaments on the core where 1<X<6 to form a cord with at least one filament in the core being located a distance from the center of the cord equal to the distance from the center of the cord to each of the N+X number of filaments.
A metallic cord for reinforcing elastomers having single filaments of similar diameter, lay length and lay direction comprising at least two layers of filaments, one of which may be a core, one layer being internal to the other layer to thereby form inner and outer layers, at least one filament in an outer layer displaced into an inner layer and vice versa with a frequency of every 15 mm to 40 mm over the length of the cord.
Dependencies are inferred from the claim text.