This is probably the reason why manufactures created the larger upright cordless vacuum cleaners, which are almost like the full-sized vacuum cleaners but are rechargeable and more lightweight. These upright cordless vacuum cleaners will allow you to clean from room to room without worrying of running out of cord. Like any other electrical unit, it needs to be protected against dust; or otherwise, the same cover-protection turns to appear as decorative accent to the entire ambiance of a place. Also, if you are tired of maintaining a place for your vacuum cleaner, hiding it somewhere so as not to block traffic passages, much more if your residence is not large enough to allow many things inside, you have a second thought of converting it to a better and more artistic area, with the good idea to think of covering your vacuum cleaner instead of setting it aside. Most vacuum cleaners clog after catching a lot of dust. Dyson doesn t because the roller inside the machine converts it into clean air. Thus, eliminating the need for filter bags used by many conventional companies. Though Dyson doesn t have a huge product line to choose from, the makers guarantee that it can clean any surface regardless if this is vinyl, wood or carpet. In some countries, Electrolux agents are sent house to house to conduct a free demonstration in the hopes that the customer will buy the product. The company considers this to be an excellent strategy since the other competitors mainly rely on having the product distributed in a store. There have been a lot of improvements that people can find in buying a Eureka vacuum cleaner. It never failed to answer consumer needs because of its specialty in technical implementation of electronics with mechanical devices. They are not limited to audio tquipments, but they also made competetive breakgthrough with home appliance production. How does Panasonic Vacuum Cleaners do the cleaning job? Puffing Billy is a rather large device that needs to be transported. Suction is done by an internal combustion device that burns gasoline. Because of its size, his invention did not click. In 1905, Walter Griffiths patented a similar device that is smaller in size. He called it the Griffith's Improved Vacuum Apparatus for Removing Dust from Carpets.