A steel wire transmission system includes plural slide rail seats, plural slide rails, plural wheel sets corresponding to the plural slide rails, plural slide blocks, plural steel wires, plural guide rods and a printhead module. The plural slide rails are disposed on the corresponding slide rail seats. Each wheel set includes a driving wheel and a driven wheel corresponding to the driving wheel. The driving wheel and the driven wheel of each wheel set are fixed at two ends of the corresponding slide rail. Each slide block is sheathed around the corresponding slide rail and movable between the corresponding driving wheel and the corresponding driven wheel. The plural steel wires are wound around the corresponding wheel sets. Each guide rod is connected with two corresponding slide blocks. The printhead module is connected with the plural guide rods.

Poly-V belts are disclosed that have a body in an elastomeric material, preferably EPDM, a plurality of durable filiform inserts longitudinally embedded in the body, and a coupling portion integrally connected to the body and comprising a plurality of V-shaped ribs in side by side arrangement alternating with V-shaped grooves. A layer of a thermoplastic material at least partially covers the ribs, and a knitted fabric is arranged over the thermoplastic material. Preferably, the thermoplastic material includes a polyolefin irradiated with a dose amount of radiation between 60 and 140 kGy.

For showing a wear state of a V-ribbed belt, which is constructed with a belt backing (1), a tension strand (2) arranged underneath the belt backing and a carcass (4), in which there are formed, in the longitudinal direction of the V-ribbed belt, V-ribs (7) which run parallel to one another, have in each case an interspace (8) with respect to one another and have inclined rib flanks (12), wherein the interspaces (8), formed for the engagement of pulley ribs (11) of a V-belt pulley (10), between two V-ribs (7) of the V-ribbed belt extend as far as a rib base (9) of the V-ribs (7), according to the invention a removal of material in the rib base (9) is detected as a criterion for the wear state.

A V-belt (B) includes a rubber composition forming a portion (11) to be V-shaped side faces (110). Organic nanofibers (16) and organic short fibers (17) are included in the rubber composition, and oriented along a belt width. In the rubber composition, a ratio of a storage modulus in a grain direction to a storage modulus in cross-grain direction is 5 or greater.

A friction transmission belt includes short fibers arranged so as to protrude from a surface of a pulley contact-side part made of a rubber composition. The short fibers consist of aramid short fibers and non-aramid synthetic short fibers having a standard moisture regain of equal to or less than 4%.

The present invention relates to a frictional power transmission belt containing an extensible layer forming a belt back surface, a compressive rubber layer formed on one surface of the extensible layer and frictionally engaging at the lateral surface thereof with pulleys, and a tension member embedded between the extensible layer and the compressive rubber layer along the belt length direction, in which a surface of at least a part of the compressive rubber layer to be in contact with pulleys is coated with a fiber/resin mixture layer that contains a resin component and heat-resistant fibers having a softening point or a melting point higher than a vulcanization temperature in a mixed state, and the heat-resistant fibers contain a fiber embedded so as to extend from the fiber/resin mixture layer to the compressive rubber layer.

A method for fabricating a belt with upstream treatment of a tension member. The belt comprises a belt body made of a polymeric material having elastic properties, having a top ply as belt backing and a substructure having a force transmission zone, and a tension member embedded into the belt body. The tension member has been treated with crosslinked polymer; in an upstream stage of the belt fabrication method, voids in the tension member are filled at least partly with crosslinked polymer and the tension member is sealed with an envelope layer of crosslinked polymer, this being done, in a single treatment stage or in at least two treatment stages, by wetting of the tension member with an overall treatment mixture comprising at least one prepolymer, at least one crosslinker and at least one solvent or dispersion medium, and then drying of the treated tension member.

A mechanical drive connection assembly (1) for driving in rotation a carrier shaft (2) of a structure rotating about a central axis (2a) passing through this carrier shaft (2). This connection (1) includes at least one drive ring (3a) that is secured to this carrier shaft (2) and driven in rotation in a given direction (S1) by a transmission member (4a, 4b). This transmission member is connected at one end to the drive ring (3a) by winding and at its other end to a traction device. The rotation in the opposite direction (S2) is generated by a second traction device (5) connected to the carrier shaft (2).

A mechanical drive connection assembly (1) for driving in rotation a carrier shaft (2) of a structure rotating about a central axis (2a) passing through this carrier shaft (2). This connection (1) includes at least one drive ring (3a) that is secured to this carrier shaft (2) and driven in rotation in a given direction (S1) by a transmission member (4a, 4b). This transmission member is connected at one end to the drive ring (3a) by winding and at its other end to a traction device. The rotation in the opposite direction (S2) is generated by a second traction device (5) connected to the carrier shaft (2).

A power transmission belt having elastomer teeth based on an ethylene alpha-olefin elastomer, provided with an external film, is provided in which the external film is based on a thermoplastic olefin, the thermoplastic of the film being associated with a silicone elastomer that represents at least 20% by weight of the total weight of the film and with a compatibilizing element that ensures, within the film, compatibility between the thermoplastic and the silicone elastomer.