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In 1986 inventor Kalvin Klundt designed the very first two long handle giant bubble maker called Dip Stix?. He was later granted two US patents (4943255 & D306465) on his design. It used two long rods to support and control the flexible bubble loop created from a unique round cord using a double coil. The loop absorbs and releases the big level of bubble solution had to create huge bubbles.
Self-cleaning filter features: continuous water supply is carried out in the backflush, and the whole backwash is achieved in every point of the suction net filter. The anti-flushing is only a small local pressure change between the suction nozzle and the fine filter screen, while the movement of the collector and hydraulic cylinder does not affect the normal water supply. At the same time, the amount of water consumed during the backflush is very small, with the flow rate of 300m3/ h. For example, the reverse flushing flow rate is 35-40m3 / h, the anti-flushing time is 7-15 seconds, and the backwash amount is 80-160L
A substantial reduction in the seamless rail joint, reducing the impact of rail wheels through joint, which saves line maintenance costs, prolong the service life of rail, abate the locomotive vehicle noise, etc., therefore, developed rapidly. In the 1930s, German and American railroads began to carry out small test lines, and by 1981, the world had laid a seamless line of about 300,000 kilometers, of which China lay about 8,000 kilometers
The Red Baron airplanes manufactured by Albatros evolved steadily throughout World War I. The first plane flown by Richthofen was an Albatross C.III, a two-seat general use biplane that has been eventually manufactured in larger numbers than any C series Albatros. It was employed for photo-reconnaissance, bomber escort, and light bombing, and is the plane that Richthofen trained as being a pilot in.
A substantial reduction in the seamless rail joint, reducing the impact of rail wheels through joint, which saves line maintenance costs, prolong the service life of rail, abate the locomotive vehicle noise, etc., therefore, developed rapidly. In the 1930s, German and American railroads began to carry out small test lines, and by 1981, the world had laid a seamless line of about 300,000 kilometers, of which China lay about 8,000 kilometers
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