US Patent 7628052 Hand crimping tool interchangeable and interactive jaws

A multi-functional crimping tool for connecting pipe joints with pipes is disclosed, the tool includes a pair of crimping head hinged together, form a circle cavity for penetrating the pipe, and at least a capped screw rotatably mounted onto a top side of the crimping head body and shifted from a fastening position and a releasing position; a pair of crimping jaws respectively and operatively clipped onto the crimping heads respectively, wherein in the fastening position, the capped screw is screwed down to secure the crimping jaws attach onto said crimping heads, and in the releasing position, the capped screw is loosened up allowing the crimping jaws transversely pulled off the crimping head for convenient replacement.