Importance

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Abstract

A hydraulic device is provided capable of moving heavy loads along a slotted track. The hydraulic device has a cylinder and piston unit, a jack that is connected to one or more ratcheting claws, and a sliding member having slots for placement of one or more ratcheting claws. To prevent brittle fracture of the hydraulic device during the movement of heavy loads under extreme cold conditions, the hydraulic device has a chamber for placement of heatable members that heat various elements of the hydraulic device, thereby reducing the likelihood of brittle fracture of the hydraulic device during operation. The hydraulic device may have one or more pairs of tandem ratchet claws that evenly distribute load forces along the slotted track. The device may also have detachable side weldments that hold the jack and claws for easy placement and removal of the device on a beam.

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First Claim