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A compression tool comprises a tool head and a pair of dies mounted in the tool head for compressingly, surroundingly engaging a generally tubular workpiece. The dies define a minimum opening and a maximum opening therebetween for accommodating workpieces over a corresponding range of sizes. A fluid

A compression tool comprises a tool head and a pair of dies mounted in the tool head for compressingly, surroundingly engaging a generally tubular workpiece. The dies define a minimum opening and a maximum opening therebetween for accommodating workpieces over a corresponding range of sizes. A fluid operated drive urges the dies inwardly to compress the workpiece and a fluid pressure control is provided for controllably varying the maximum pressure of the fluid supplied to the fluid operated drive in accordance with the size of a workpiece to be compressed.

대표청구항 ▼

A compression tool for compressing a generally tubular workpiece comprising: a tool head, a die set including fixed and movable die means mounted in said tool head, said movable die means intermeshing with said fixed die means for surroundingly engaging and compressing said tubular workpiece, said m

A compression tool for compressing a generally tubular workpiece comprising: a tool head, a die set including fixed and movable die means mounted in said tool head, said movable die means intermeshing with said fixed die means for surroundingly engaging and compressing said tubular workpiece, said movable die means being continuously variably positionable relative to said fixed die means for defining an opening of variable size between a predetermined minimum opening and a predetermined maximum opening for selectively compressing relatively large and relatively small workpieces over a corresponding range of sizes by the same said die set, fluid operated drive means for driving said movable die means towards said predetermined minimum opening to compress a preselected size of workpiece; and fluid pressure control means including a manually adjustable member readily accessible and in view to an operator in on-the-job field use for preselecting and presetting the maximum pressure of the fluid supply to said fluid operated drive means for the preselected size of workpiece to be compressed and thereby controlling the force applied by the drive means to the die means and the compressive force applied by the die means to the selected size of workpiece within the range of sizes which may be accommodated by the same said die set; wherein said manually adjustable member protrudes from the tool to be accessible to an operator, and wherein said fluid operated drive means includes a fixed handle and a movable handle movably mounted to said fixed handle to define a lever, and further including mounting means coupled with said fixed handle for mounting said manually adjustable member to protrude therefrom substantially without interferring with the pivotal motion of said movable handle relative to said fixed handle; and wherein said mounting means comprises a rotatable shaft protruding from a free outer end portion of said fixed handle and said adjustable member comprises a knob coupled with said shaft.