Metal forming process for shaping ends of tubes
First Claim
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1. THE PROCESS OF MAKING A PLUMBING FITTING FROM A MALLEABLE TUBE OF SUBSTANTIALLY UNIFORM CROSS-SECTION, WHICH COMPRISES:
- SECURING THE TUBE BY A CLAMPING DEVICE SO THAT A LENGTH OF THE TUBE IS EXPOSED BEYOND THE DEVICE;
DRIVING A FORMING TOOL INTO THE END OF THE TUBE TO DEFINE AN ENLARGED END THAT MERGES WITH THE MAIN BODY OF THE TUBE AT A SUBSTANTIALLY CONICAL PART TO FORM A BENDING RING;
FORCING THE EDGE OF THE ENLARGED END PROGRESSIVELY
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1 Claim
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1. THE PROCESS OF MAKING A PLUMBING FITTING FROM A MALLEABLE TUBE OF SUBSTANTIALLY UNIFORM CROSS-SECTION, WHICH COMPRISES:
- SECURING THE TUBE BY A CLAMPING DEVICE SO THAT A LENGTH OF THE TUBE IS EXPOSED BEYOND THE DEVICE;
DRIVING A FORMING TOOL INTO THE END OF THE TUBE TO DEFINE AN ENLARGED END THAT MERGES WITH THE MAIN BODY OF THE TUBE AT A SUBSTANTIALLY CONICAL PART TO FORM A BENDING RING;
FORCING THE EDGE OF THE ENLARGED END PROGRESSIVELY
- SECURING THE TUBE BY A CLAMPING DEVICE SO THAT A LENGTH OF THE TUBE IS EXPOSED BEYOND THE DEVICE;
Specification