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    • 5. 发明授权
    • Fluid nozzle system using self-propelling toroidal vortices for long-range jet impact
    • US07621463B2
    • 2009-11-24
    • US11330695
    • 2006-01-11
    • Walter M. Presz, Jr.Stanley Kowalski, III
    • Walter M. Presz, Jr.Stanley Kowalski, III
    • B05B1/08B05B1/34
    • B05B1/08B05B1/341
    • A fluid nozzle system (nicknamed the “RAP nozzle system”) is disclosed that combines a pulse flow device with a toroidal vortex generator to create a high momentum, self propelling jet for increasing long-range jet impact forces. In a preferred embodiment, the RAP nozzle system comprises a fluid switch, without any moving mechanical part, which takes continuous flow normally exited through a nozzle and breaks it into discrete patterns of pulsed flow. The unsteady characteristics of the pulsed flow are then used with either single-stage ejectors, multi-stage ejectors or other devices to increase the momentum and/or the lateral size of the individual pulses. These fluid pulses are then used to generate a jet with large scale, stable toroidal vortices which travel long distances, downstream of the ejector(s), and apply large forces at impact. Unlike the prior art, such toroidal vortices are stable, carry large flow momentum, and propel themselves through the air (or other fluid) at a speed approximately ¼ the pulsed velocity of the fluid used to generate the vortices. Furthermore, the toroidal vortices travel beyond the RAP nozzle system with minimal mixing and minimal losses. Tests conducted have demonstrated that these toroidal vortices travel up to 10 times the distance of current continuous flow jets and can deliver an order of magnitude larger force to move particles at large distances from the nozzle exit when compared to the same energy, continuous jet. The same toroidal vortices generate stirring mechanisms at impact which can be useful in many applications. The RAP nozzle system can significantly improve the performance of leaf blowers, shop air nozzles, and all other products that utilize jet impact forces for particle movement. The same RAP nozzle system concept can be used in a significant number of other applications where fluid pulsations could be beneficial. Fluid pulsations increase the force of a fluid jet by adding impulsive forces similar to a jack hammer. These unsteady forces can be quite large and are directly related to the velocity of the jet at impact. In an alternate embodiment, the RAP nozzle concept can also carry a secondary fluid over a large distance without mixing the secondary fluid with the ambient fluid. The secondary fluid is carried in the core of the toroidal vortices generated.
    • 6. 发明授权
    • Powered lower bobbin feed system for deflector type rotary braiding machines
    • 用于偏转器型旋转编织机的下部线轴馈送系统
    • US07270043B2
    • 2007-09-18
    • US11339723
    • 2006-01-25
    • Walter M. Presz, Jr.Stanley Kowalski, III
    • Walter M. Presz, Jr.Stanley Kowalski, III
    • D04C3/42
    • D04C3/44
    • A Powered Lower Bobbin Feed (“PLBF”) system is disclosed for improving the operation of deflector type rotary braiding machines, such as the Wardwell Rapid Braider. The PLBF eliminates or reduces the impulsive tension spikes set up by the deflection and feed process in current rotary braiding machines by uniquely controlling the lower bobbin filament feed. These tension spikes result from: the rapid rotational acceleration and deceleration required of the lower bobbin as a result of the feed process; the lever arm tension control and bobbin ratchet mechanism; and the shape of the filament deflector surface. Such failure limits the operating speed of rotary braiding machines, the minimum size of filament that can be braided effectively, or the ability to maintain the quality of the braid produced. By eliminating or reducing these spikes, the PLBF therefore can increase the working speed of circular braiding machines and improve the uniformity of braided filaments generated by such machines at a given speed. In the preferred embodiment, the PLBF comprises: a slip ring designed to provide power to the lower bobbins; a variable speed powered lower bobbin concept; a feedback control system for the bobbins to assure bobbin feed matches braid consumption; and an improved, more contoured, deflector surface to minimize feed tension spikes. The new contour can be created: by retrofitting existing deflectors with a spline; or, by making new deflectors that incorporate the overall contour of a retrofitted deflector.
    • 公开了一种用于改进偏转机型旋转编织机(例如Wardwell Rapid Braider)的操作的动力下部骨架进给(“PLBF”)系统。 PLBF通过独特控制下线轴细丝进给,消除或减少由当前旋转编织机中的偏转和进给过程设置的脉冲张力尖峰。 这些张力尖峰是由于进料过程导致的下线轴所需的快速旋转加速和减速: 杠杆臂张力控制和梭芯棘轮机构; 以及灯丝偏转器表面的形状。 这种故障限制了旋转编织机的操作速度,可有效编织的细丝的最小尺寸,或保持编织物质量的能力。 通过消除或减少这些尖峰,PLBF可以提高圆形编织机的工作速度,并提高这种机器在给定速度下产生的编织丝的均匀性。 在优选实施例中,PLBF包括:滑环,设计成向下线轴提供动力; 变速动力下筒管概念; 用于线轴的反馈控制系统确保线轴馈送匹配编织消耗; 和改进的,更加轮廓的导流板表面,以最小化进料张力尖峰。 可以创建新的轮廓:通过用花键改装现有的导流板; 或者,通过制造包含改装偏转器的整体轮廓的新偏转器。