Back to results
US 5,020,443 AGranted
Skyline-suspended carriage for heavy load pulling
OwnerDaniel Gauthierinventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerDaniel Gauthierinventor
Estimating the term…
A skyline-suspended carriage system for transporting a heavy load slopewisely of a hill, comprising: (a) first and second vertically-offset and horizontally spaced mobile anchor points; (b) hoists, mounted to the first and second anchor points; (c) a single skyline, partially wound around the hoists; (d) an elongated carriage having carriage suspending idle pulleys riding on the skyline and an intermediate driving pulley engaging the bottom of the skyline which is wrapped around the top sector of the driving pulley to obtain slipless engagement; and a load-grabbing and retaining dragline, wound on a hoist in the carriage. One idle pulley and the driving pulley are close together at the downhill end of the carriage while the other idle pulley is substantially spaced from the driving pulley being located at the uphill end of the carriage. This arrangement stabilizes the carriage on the skyline. The positions of the driving pulley and the dowhill idle pulley can be changed to modify the inclination of the carriage relative to the skyline depending on the slope gradient.
A skyline suspended carriage system for moving a load, comprising a skyline anchored to and extending between an upper and a lower anchor point, an elongated carriage having an uphill and a downhill carriage suspending idle pulley mounted at the uphill and downhill ends of said carriage respectively and engaging longitudinally spaced portions of the top of the skyline, and an intermediate driving pulley mounted on said carriage for moving said carriage along the skyline, said driving pulley located nearer to said downhill idle pulley than to said uphill idle pulley and engaging the bottom of said skyline, the topmost sector of said driving pulley being higher than the straight line joining the lowermost sectors of the two idle pulleys so that said skyline is wrapped around said driving pulley through a sector of at least 30.degree.;
Dependencies are inferred from the claim text.