Clamp structure with corrugated insert ring for relatively hard, inelastic parts

Claim 1

A FLEXIBLE COUPLING FOR CONNECTING TOGETHER TWO SHAFT ENDS, COMPRISING: A FIRST AND SECOND SHAFT END, A HOSE-LIKE COUPLING PART MADE OF PLASTIC MATERIAL AND SLIPPED WITH THE HOLLOW ENDS THEREOF OVER SAID SHAFT ENDS, AND TWO CLAMP MEANS FOR SECURING SAID COUPLING PART TO SAID SHAFT ENDS EACH INCLUDING AN ENDLESS HOSE CLAMP HAVING A PROJECTING FOLD OPERABLE TO BE CONTRACTED AND A SHEET-METAL STRIP BENT TOGETHER INTO A RING AND PROVIDED IN THE CIRCUMFERENTIAL DIRECTION THEREOF WITH AN INWARDLY DIRECTED, RELATIVELY NARROW CORRUGATION, SAID RING BEING COMPLETELY SEPARATE FROM A RESPECTIVE HOSE CLAMP AND BEING INSERTED AS INTERMEDIATE RING BETWEEN THE CLAMP AND THE PLASTIC COUPLING PART TO TRANSMIT THE TENSIONAL AND PRESSURE FORCES PRODUCED EXCLUSIVELY BY THE CORRESPONDING CLAMP WHEREBY UPON CONTRACTION OF THE CLAMP THE COUPLING PART IS SECURELY CLAMPED ONTO THE CORRESPONDING SHAFT END ALONG THE PRESSURE AREA DEFINED BY THE CORRUGATION.