Abstract: An end body 34 is formed with a chamber 45 having a bevelled surface 62 and a cylindrical wall 60 in a portion thereof. A sleeve 46 is formed with an outward flange 48 at one end thereof and an annular bead 50 near another end 54 thereof. The sleeve 46 is formed with a press fit section 56 between the end 54 and the bead 50 thereof. The sleeve 46 is inserted axially into the chamber 45 of the end body 34 and the section 56 thereof is press fit into the cylindrical wall 60 of the end body with the bead 50 locating on the bevelled surface 62 of the end body. A valve 44 is threadedly attached to an end 58 of the end body 34 whereby a seal 64 of the valve engages the flange 48 of the sleeve 46. Water enters the end body 34 at the bottom thereof and flows into an axial passage 49 of the sleeve 46. If valve 44 is closed, the water will not flow any further. If the valve 44 is open, water will flow through the sleeve 46, the valve, the chamber 45 and out of the end body 34 to other facilities.

Abstract: A system for first setting a blind rivet and then verifying the correctness of the set comprising a rivet setting tool to set the rivet and computer logic to verify the correctness of the set. The setting tool includes a jaw assembly for holding the stem of the rivet's mandrel fitted to an axially movable pulling shaft. Both the pulling force of the setting tool and the displacement of the pulling shaft are measured and the measurements are interpreted by an integrator to determine the total energy of the setting process. The determined total energy is then compared with an ideal total energy to assess whether or not the set of the particular rivet is acceptable. Other quantitative comparisons may be made against other ideal values.

Abstract: A non-blind rivet is disclosed that can be used to form a joint without the need for brazing, welding or threaded locknuts. The rivet 1 is placed in compression by opposing dies 15,20 causing a narrow region of the rivet wall to buckle forming a fold 24, the rivet thus being held to a workpiece 12 between a flange 6 and the fold 24.

Abstract: A blind rivet set verification system for setting a blind rivet assessing the acceptability of the rivet set. The system includes a remote intensified rivet setting tool and computer hardware and software. The tool comprises a displacement transducer that produces a displacement signal and a pressure transducer that produces a pressure signal. The transducers are connected to the computer which receives the distinct signals. These signals are interpreted to plot a displacement-versus pressure waveform and to determine the velocity of the movement of an air piston that responds to the rivet set by hydraulic pressure. Using the combined date of the velocity waveform and the displacement-versus pressure waveform, the breakload is identified and compared against predetermined ideal data to assess the acceptability of the set. The displacement reading at break is corrected for jaw slippage and offset of the air piston.