Abstract:
A two-piece tire assembly has a removable tread belt (12) for installing about the circumference of a tire carcass (14). The tread belt (12) has at least a pair of belt layers (36, 38, 40), and one layer (42) comprising inextensible reinforcing cables (44, 94, 80, 102, 114) inclined at substantially zero degrees relative to the circumferential direction of the tire assembly. The cables in zero degree ply have a tensile strength of at least 27,500 N.
Abstract:
A method of treating a metallic cord to improve its ability to adhere to rubber is disclosed. The method involves contacting the metallic cord with a naphthenic oil containing from 1 to 53 percent by weight of a soluble cobalt salt and thereby deposit from 0.0002 to 0.07 grams of cobalt salt per kilogram of steel to the metallic cord.
Abstract:
The invention relates to a composite cord (10) for reinforcement of elastomers comprising a core (12) of a high polymer material, a first layer of steel filaments (14) twisted around said core and a second layer of steel filaments (16) twisted around said first layer. The polymer material is present in a sufficient volume to create gaps between adjacent filaments of the first layer and possibly also between the filaments of the second layer. The composite cord is characterised by a decreased fretting of the steel filaments.
Abstract:
There is disclosed a zinc-rich coated steel article which is characterized by an outer layer of rubber containing a weight ratio of sulfur vulcanizing agent to total accelerator ranging from 0.4:1 to 0.8:1.
Abstract:
L'invention concerne un substrat qui sert au renforcement des polymères élastomères, au moins une partie du substrat étant composée d'acier, ladite partie étant recouverte d'une couche d'un alliage constitué, mises à part les impuretés, d'entre 4,2 % et 6,5 % en poids d'aluminium, et éventuellement moins de 0,1 % d'au moins un élément qui stimule la capacité de mouillage du substrat par l'alliage liquide, le solde étant constitué par du zinc.
Abstract:
There is disclosed a method of stranding together a plurality of strands (7) of sectorial cross-section around an optical fiber unit (2) which serves as a central wire material. First, a rigid type stranding machine is used to impart spiral twist to each strand (7). Subsequently, the twisted strand (7) is heat-treated to remove its strains. These strands are then fed to a planetary type stranding machine which provides planetary motion in which they make orbital rotation around the optical fiber unit (2) without making own-axis rotation, whereby they are stranded together on the optical fiber unit (2).