Locking mechanism for expansion device

Abstract

This item is attached to both sides of the expansion device to secure the expansion device to the object to be expanded. In the "Reference Photograph Showing Usage," the pantograph jack is the expansion device. Also, when inserting spacers between beams, it is necessary to expand the beam spacing, and these beams are the objects to be expanded. In the "Reference Photograph Showing Usage," an eyebolt and wire are attached, and the wire can be gripped to make it portable. As shown in the "Reference Diagram Showing Usage with Pantograph Jack," extending the pantograph jack causes this item to press against the beam, expanding the beam spacing. Similarly, as shown in the "Reference Diagram Showing Usage with Hydraulic Jack," extending the hydraulic jack causes this item to press against the beam, expanding the beam spacing.

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