A belt for an elevator system includes a plurality of tension members arranged along a belt width and extending longitudinally along a length of the belt and a jacket at least partially enclosing the plurality of tension members. The jacket defining a traction side of the belt configured to interface with a traction sheave of an elevator system. The jacket includes a base material layer, and a coating layer positioned over the base material layer formed from a self-extinguishing fluoroelastomer material. A method of forming a belt for an elevator system includes forming a plurality of tension members and encapsulating the plurality of tension members in a jacket. The jacket includes a base material layer and a coating layer formed from the self-extinguishing fluoroelastomer material.

A conductive anti-static drive belt includes a first or drive surface having a plurality of tooth formations therein with a land portion formed between each adjacent pair of teeth. The drive surface is provided by a fabric layer having electrically conductive properties. The fabric layer has an interior surface opposite the drive surface. A second surface is provided opposite the drive surface. The second surface is provided by a polymeric body that conforms to and is mated with the interior surface of the fabric layer. At least one tensile reinforcement member is at least partially encased in the polymeric body and extends along the interior surface of the fabric C layer at each land portion throughout a loop formed by the belt. A conductive strand is at least partially encased in the polymeric body and extends along the interior surface of the fabric layer at each land portion.

A conductive anti-static drive belt includes a first or drive surface having a plurality of tooth formations therein with a land portion formed between each adjacent pair of teeth. The drive surface is provided by a fabric layer having electrically conductive properties. The fabric layer has an interior surface opposite the drive surface. A second surface is provided opposite the drive surface. The second surface is provided by a polymeric body that conforms to and is mated with the interior surface of the fabric layer. At least one tensile reinforcement member is at least partially encased in the polymeric body and extends along the interior surface of the fabric C layer at each land portion throughout a loop formed by the belt. A conductive strand is at least partially encased in the polymeric body and extends along the interior surface of the fabric layer at each land portion.

A power transmission belt includes a pulley non-contacting portion made of a rubber composition. The rubber composition contains a rubber component, cellulose-based fine fibers, and a non-carbon black hydrophilic inorganic filler, and contains no carbon black or contains carbon black in an amount of less than 20 parts by mass relative to 100 parts by mass of the rubber component.

A high efficiency belt having reduced bending stiffness while maintaining a high coefficient of friction. The belt includes a backing layer, a rib material layer, and cords embedded within, wherein the coefficient of friction of the high efficiency belt is greater than or equal to 0.03 mm/N times the bending stiffness for belts having a thickness in the range of from 2.6 mm to 4.2 mm. The belt can include a bending stiffness in the range of from about 30 N/mm to about 65 N/mm and an anisotropic modulus of elasticity ratio of between 1.1 and 5.0. Methods of manufacturing the high efficiency belt are also described and can include forming sheets of rib material with parallel aligned reinforcement fibers transverse to the direction of rotation of the high efficiency belt.

A high efficiency belt having reduced bending stiffness while maintaining a high coefficient of friction. The belt includes a backing layer, a rib material layer, and cords embedded within, wherein the coefficient of friction of the high efficiency belt is greater than or equal to 0.03 mm/N times the bending stiffness for belts having a thickness in the range of from 2.6 mm to 4.2 mm. The belt can include a bending stiffness in the range of from about 30 N/mm to about 65 N/mm and an anisotropic modulus of elasticity ratio of between 1.1 and 5.0. Methods of manufacturing the high efficiency belt are also described and can include forming sheets of rib material with parallel aligned reinforcement fibers transverse to the direction of rotation of the high efficiency belt.

A cord of a toothed belt is made of a twisted yarn including a band-like material. The band-like material includes a filament bundle of high-strength glass fibers integrated together through a binder. The binder contains a rubber component, at least either a maleimide-based compound or a polyisocyanate compound, and a powdery inorganic filler. A surface of a reinforcing fabric facing opposite to the toothed belt body is coated with a surface-coating rubber layer made of a rubber composition containing a rubber component including hydrogenated nitrile-butadiene rubber as a main part.

A belt for an elevator system is provided having a core and an elastomeric sheath positioned over the core. An elastomer and phosphonate blended bonding agent adheres the core to the sheath.

A belt for an elevator system is provided having a core and an elastomeric sheath positioned over the core. An elastomer and phosphonate blended bonding agent adheres the core to the sheath.

An object is to provide a polyurethane elastomer excellent in strength and surface smoothness. To attain the object, a urethane composition including a certain prepolymer, a plasticizer and a crosslinking agent is provided.