Vacuum cleaner
The vacuum cleaner evolved from the carpet sweeper via manual vacuum cleaners. The first manual models, using bellows, were developed in the 1860s, and the first motorized designs appeared at the turn of the 20th century, with the first decade being the boom decade.
Vortex tube
The vortex tube was invented in 1931 by French physicist Georges J. Ranque. It was rediscovered by Paul Dirac in 1934 while he was searching for a device to perform isotope separation, see Helikon vortex separation process. German physicist improved the design and published a widely read paper in 1947 on the device, which he called a "Wirbelrohr" (literally, whirl pipe). 
In 1954, Westley published a comprehensive survey entitled ‘‘A bibliography and survey of the vortex tube’’, which included over 100 references. In 1951 Curley and McGree , in 1956 Kalvinskas , in 1964 Dobratz , in 1972 Nash , and in 1979 Hellyar made important contribution to the RHVT literature by their extensive reviews on the vortex tube and its applications.
From 1952 to 1963, C. Darby Fulton, Jr. obtained four U.S. patents relating to the development of the vortex tube. In 1961, Fulton began manufacturing the vortex tube under the company name Fulton Cryogenics. Dr. Fulton sold the company to Vortec, Inc. The vortex tube was used to separate gas mixtures, oxygen and nitrogen, carbon dioxide and helium, carbon dioxide and air in 1967 by Linderstrom-Lang.