Patent ID: 8821069

Claim:
A linear pipe tensioner comprising: a frame; a first track assembly having a first track operatively associated with two first track axles, the first track assembly being secured to the frame; a second track assembly having a second track operatively associated with two second track axles, the second track assembly being secured to the frame above the first track to define a pathway between the first track and the second track for receiving a pipe; a first roller assembly operatively associated with the first track, the first roller assembly having a first roller operatively associated with a first roller carriage, the first roller carriage being pivotally connected to a first hydraulic piston operatively associated with a first hydraulic cylinder, the first hydraulic cylinder having a first hydraulic accumulator disposed within the first hydraulic cylinder, the first hydraulic cylinder operatively associated with a first swivel member for rotational movement of the first hydraulic piston; and a second roller assembly operatively associated with the first track, the second roller assembly having a second roller operatively associated with a second roller carriage, the second roller carriage being pivotally connected to a second hydraulic piston operatively associated with a second hydraulic cylinder, the second hydraulic cylinder having a second hydraulic accumulator disposed within the second hydraulic cylinder, the second hydraulic cylinder operatively associated with a second swivel member for rotational movement of the second hydraulic piston, wherein the first roller carriage is pivotally connected to the second roller carriage by a bar having first and second slots, and wherein the first slot is operatively associated with a first pin operatively associated with the first roller carriage and the second slot is operatively associated with a second pin operatively associated with the second roller carriage.