摘要:
A tread design for a pneumatic tire of radial construction for high-speed vehicles is provided. The tire has a height-to-width ratio of .ltoreq.0.6 with a tread design that is tied to the direction of rotation. The tread design comprises profiled elements that are steeply oriented in the circumferential direction at an angle to the equatorial plane of the tire and are arranged in the shape of V's. The profiled elements extend from a central portion of the tread into shoulder regions of the tire, with the profiled elements being angled-off at a bend region in the shoulder regions in the direction of an axis of the tire. Respective continuous inclined grooves that proceed from the central portion to the shoulder regions are formed between the profiled elements. A circumferentially extending rib is disposed in the equatorial plane and forms two central, circumferentially extending grooves, one on each side of the rib, between this rib and starting portions of the profiled elements. The inclined grooves communicate with these circumferential grooves. In the central portion of the tread, the profiled elements extend at an angle of from 5.degree. to 30.degree. relative to the equatorial plane, while in the shoulder regions, proceeding from the bend regions, the profiled elements extend at an angle of from 65.degree. to 85.degree.. The shoulder regions have a forked configuration.
摘要:
A pneumatic vehicle tire where the sheathing of the bead core ring is made of an elastomeric mixture that adheres well to steel and that contains plasticizer in the form of aromatic oils comprising approximately 2-10 parts silicon oil per one hundred parts elastomer. As a result, the bead core ring sheathing does not fuse with other rubber mixtures and the bead core has a high ability to turn.
摘要:
A tread surface profile including a three-part configuration. A circumferentially extending, centrally disposed, linear or zigzagged rib has connected on both sides thereof a plurality of central blocks that are separated from the rib by shallow and narrow venting grooves. On both sides of the rib, pluralities of profiled blocks that extend from a tire shoulder toward the rib, with the profiled blocks being separated from the central blocks of the latter by longitudinal, circumferentially extending channels, and being separated from one another by lateral channels. The profiled blocks and the central blocks are arranged in S-shaped configurations that extend over the width of the tread surface in a diagonal fashion. The shoulder end of each profiled block is oriented axially at an angle of from 90.degree. to 80.degree. relative to the central tire plane, and each rib end of the central blocks is oriented circumferentially at an angle of from 35.degree. to 55.degree. relative to the central tire plane. The lateral channels are connected to one of the longitudinal channels, with at least a portion of the latter being circumferentially oriented at an angle of from 0.degree. to 65.degree.. The profile portion formed by the rib and central blocks extends over 25 to 40% of the of tread surface width. The profiled and central blocks are provided with sipes that extend parallel to the lateral channels and are connected to at least one of the longitudinal channels and venting grooves.
摘要:
A cap ply for the belt reinforcing member of a pneumatic vehicle tire. The heat shrinking reinforcing elements of the cap ply are oriented in the circumferential direction of the tire, and consists of monofilament threads or monofilament cords, and have a filament fineness of at least 250 decitex. These monofilaments fulfill a wrapping function, and at the same time are airtight. The monofilaments also prevent corrosion of the steel plies of the belt.
摘要:
A screw extruder for mixing, homogenizing, and degassing highly viscous rubber mixtures and similarly acting thermoplastics. The extruder has mixing pins associated with the housing in the mixing and homogenizing zone, and degassing pins associated with the housing in the degassing zone. The degassing pins have passages or channels through which gases and vapors are withdrawn. The retaining or damming structure at the entrance to the degassing zone can also be formed of pins associated with the housing. The conveyed material is mechanically and thermally satisfactorily made uniform by the inventive pin arrangement without material shearing forces, and can also be effectively and favorably degassed. High flow-through rates of the material can be achieved with high product quality.
摘要:
A tread configuration for a vehicle tire, including at least two adjacent circumferentially oriented rows of profiled blocks. The rows are separated from one another by respective circumferential grooves. The base of each groove extends parallel to the circumferential direction. A respective side wall on each side of the base extends radially outwardly from the base and forms side walls of profiled blocks of an adjacent one of the rows of blocks. Radially outer end portions of the side walls of the grooves are essentially oriented in the circumferential direction and have their contour divided by a plurality of axially oriented offsets.
摘要:
In a pneumatic vehicle tire of a divided carcass the reinforcement elements are arranged at different angles of orientation. They may be provided as a combination of the same or different materials, the same or different cord constructions, the same or different packing densities. The overlap area of two adjacent carcass layer sections represents a transition area of a gradually stepped stiffness. The overlap area represents a constructive discontinuity and is employed for influencing the force fluctuations. The divided carcass which is essentially a sounding board may also be influenced by differently constructed carcass layer sections. The manufacture of such a divided carcass is inexpensive.
摘要:
A pneumatic vehicle tire for use on a one-piece wheel rim having radially inwardly disposed rim shoulders on which corresponding bead portions of the tire are mounted. The tire bead portions have bead rings that are formed of flat strips, whereby the longest dimension of the cross-sectional configuration of the flat strips is parallel to the direction of a run-flat force, thereby fixing the greatest angular impulse force parallel to the run-flat force. This reliably prevents the tire bead from being thrown from the rim, especially during emergency operation.
摘要:
A pneumatic vehicle tire having tire beads, each of which is provided with a bead ring that is resistant to pressure and bending and that is in the form of a steel cable including a cable core wire and a plurality of cable sheathing-wires that impart a circular shape to the bead ring, which is able to pivot slightly in the tire bead. Each of the cable wires of the bead ring cable has an outer surface that is in contact with the elastomeric material of the bead or of the carcass, with the bead ring cable being pivotable in the elastomeric material when the latter is vulcanized.
摘要:
A vehicle wheel having a one-piece wheel rim on which can be mounted a pneumatic tire. The tire has a tread strip, two sidewalls, a carcass, and two tire beads which are laterally spaced from one another and contain substantially inextensible bead cores. The wheel rim has two rim shoulders, which are laterally spaced from one another and extend outwardly into a respective rim edge or into a respective rim flange. The rim also has a radially recessed rim base. The wheel further includes an emergency operation support member which is disposed in the recessed rim base and has a supporting surface which is located radially outwardly of the rim flange. The emergency operation support member is provided with a radially inner surface which faces the rim shoulder and is disposed at a distance from the latter, this distance corresponding to at least the thickness of the tire bead. An annular chamber is provided which extends further radially inwardly to the recessed rim base, and is widened axially inwardly.