초록 ▼

Track belts designed to fit circumferentially around a pneumatic bladder or tire carcass can be sealed against the ingress of soil and rock between the track shoes attached about the outer periphery of the belt by forming individual and permanent flat sites on the outer circular periphery of the bel

Track belts designed to fit circumferentially around a pneumatic bladder or tire carcass can be sealed against the ingress of soil and rock between the track shoes attached about the outer periphery of the belt by forming individual and permanent flat sites on the outer circular periphery of the belt so the flat undersurface of each track shoe is nested on a flat shoe site and therefore does not have triangular shaped gaps under its leading and trailing edges. A transverse rib of elastomer, raised from the surface belt between each of the adjacent flat sites further seals the belt in the narrow gaps formed between adjacent track shoes thereby preventing the ingress of soil and rock in these gaps when the shoes pass through a footprint formed as the pneumatic supported system is rolled. In elevation the outer surface of this pneumatic carcass supported belt is polygonol in appearance with a ridge or rib located at each joint between adjacent flat surfaces of the shoe sites which are circumferentially disposed around the belt.

대표청구항 ▼

A method of making a sealed track belt comprising: arranging a band of uncured elastomer in a cylindrical configuration and supporting said band in said configuration; applying at least one ply of inextensible reinforcing substantially across the width of said band in said cylindrical configuration

A method of making a sealed track belt comprising: arranging a band of uncured elastomer in a cylindrical configuration and supporting said band in said configuration; applying at least one ply of inextensible reinforcing substantially across the width of said band in said cylindrical configuration to form an inextensible cylindrical reinforcing ply; subsequently applying a layer of uncured elastomer over said cylindrical reinforcing ply, said layer having sufficient thickness to cover said reinforcing ply and to form corner filets between flat shoe sites subsequently formed on the surface of said layer; thereafter forcing a plurality of flat rectangular plates against the outer surface of said layer of uncured elastomer at equally spaced circumferential intervals with sufficient force to form a plurality of flat track shoe sites; and curing said band and layer of elastomers with said flat plates forced against said layer of uncured elastomer thereby forming a plurality of permanent flat track shoe sites in the outer periphery of said belt with an inner circular periphery.