| 摘要 |
1,125,503. Hydraulic couplings. E. A. NIER, and R. E. NIER. 10 June, 1966 [10 June, 1965], No. 25940/66. Heading F2C. [Also in Divisions B5 and G5] An hydraulic coupling is employed to produce axial ultrasonic vibrations, which may be used for the welding of plastics materials, the pump element being driven in the normal manner while the turbine element is braked. As shown, the pump and turbine units 2, 6 are formed with two concentric rings of two hundred toroidal flow passages 4, 5, the working liquid for which is supplied through inlet passages 11, 25 to a central chamber 12 in the pump unit, from which it is discharged through passages 13, 30. The power output may be controlled by applying an axial force to the turbine shaft 9 to vary the distance between the pump and turbine units. The turbine shaft may be mounted in a thrust bearing (40) and formed with a flange (36) engageable with the undersurface of the fixed base member 10 to limit the amplitude of the vibrations, Fig. 3 (not shown). The oscillator may also take the form of a number of individual coupling units mounted in series, Fig. 4 (not shown). When applied to a welding machine, Fig. 5 (not shown), an upper hand lever (74) controls starting and stopping, and a lower lever (73) controls the spacing of the pump and turbine units. |
