초록 ▼

An off road vehicle of the kind having fluid-distensible bag rollers for supporting the vehicle load uses bag rollers which are constructed to afford maximum flexibility in both the walls and tread and which are also constructed to be dynamically balanced. A top drive roller is associated with a bag

An off road vehicle of the kind having fluid-distensible bag rollers for supporting the vehicle load uses bag rollers which are constructed to afford maximum flexibility in both the walls and tread and which are also constructed to be dynamically balanced. A top drive roller is associated with a bag roller in certain embodiments of the off road vehicle in ways which minimize bag wear. Specific bag constructions are provided for improved operation of the off road vehicle for on-highway use. The bag roller in a fixed position serves as a transport device for supporting and moving material having uneven and/or fragile surfaces and, in a specific embodiment, is mounted in a support for use as a transportation element in a conveyer system, or as a forceful puller for lineal objects, such as pipelines, accommodating uneven dimensions.

대표청구항 ▼

A flexible-walled, fluid-distensible, axially elongated, load sustaining bag roller, said roller comprising, a mid-section, two opposite end sections, an inner, fluid-containing rubber layer extending in a substantially uniform covering over the entire inner surface of the mid-section and end sectio

A flexible-walled, fluid-distensible, axially elongated, load sustaining bag roller, said roller comprising, a mid-section, two opposite end sections, an inner, fluid-containing rubber layer extending in a substantially uniform covering over the entire inner surface of the mid-section and end sections, bead means in each end section for mounting the roller on a hub for rotation about a longitudinal axis, carcass means for providing tensile reinforcement to the bag roller, said carcass means including one or more layers of longitudinal radial tire cords with each cord fastened at one end to one bead means and at the other end to the other bead means and with each longitudinal radial cord extending between the bead means free of splices and wherein each cord is substantially entirely disposed in an individual plane extending through said longitudinal axis so that the part of each cord in the mid-section extends essentially parallel to the longitudinal axis and the parts of each cord in the end sections extend essentially radially to said longitudinal axis and wherein all layers of longitudinal radial cords are contiguous to one another without any interspersing layers of circumferential cords, said carcass means also including one or more layers of circumferential tire cords in the mid-section with each circumferential cord disposed substantially entirely within an individual plane extending perpendicular to said longitudinal axis and wherein all layers of circumferential cords are contiguous to one another without any interspersing layers of longitudinal radial tension cords, said mid-section being constructed to form substantially a right-circular cylinder when the roller is fully distended without being subjected to any load to thereby provide a cylindrical tread area for the full length of the mid-section with the bead means outboard of the tread area in the mid-section, said layer or layers of longitudinal radial tire cords being free of load carrying cords oriented in other than the longitudinal radial direction, said layer or layers of circumferential tire cords being free of load carrying cords oriented in other than the circumferential direction, said bag roller comprising no layers of cords other than said longitudinal radial tire cords and said circumerfential tire cords so that maximum flexibility is retained in said carcass means, and an outer layer of wear-resistant rubber.