Patent ID: 9476266
Filing Date: 2016-10-25
CPC Classification: B29C,B60P,B66D,E21B,F15B,F16H

Claim Text:
1. A skate drive system for a catwalk, comprising: a skate member configured to move a pipe along a trough of the catwalk; a first hydraulic cylinder having a first rod member coupled to the skate member by a first cable; a second hydraulic cylinder having a second rod member coupled to the skate by a second cable, wherein the first and second hydraulic cylinders are configured to extend and retract the first and second rod members to move the skate member via the first and second cables along the trough of the catwalk; a first sheave coupled to the first rod member, wherein the first cable wraps around the first sheave; and a bracket coupled to the first sheave and having rollers that are in contact with opposite sides of the second hydraulic cylinder, wherein the rollers move along a length of the second hydraulic cylinder when the first rod member is extended from or retracted into the first hydraulic cylinder.